FSE

Furry search engine

formerly SoFurry search engine

(FtM Horse, Hyper, M tf Zebra, F tf Donkey)

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Stage I : Futa is always bigger

Stage II : Beast off its leash

Stage III : Chronic lust

Stage IV : OVERMAX

Telah Reinhart is a Magistress; a profession of both magic and sciences, of a more academic inclination. That is- they know a lot about both, but don't usually practice either, they are the reservoirs of knowledge that often invent new methods or more effective runic arrays. The research end rather than the practice end.

Her very long, voluminous brown hair was usually left wild, so she often just tied it into a high-set pony tail to keep it out of the way. She wears very large round glasses- but only when she is doing research, she just squints the rest of the time. Easier than getting them dirty and having to clean them constantly. Her skin is a deep peach and her chest adorned with a pair of Ds capped with very dark brown areola.

She originally became a Magistress because she was too scatter brained to focus on either sciences or magics, but was too curious about how things worked and how they COULD work to leave either subject alone. Whenever she encounters something neat, she wants to pick it apart to see how it works. As soon as she knows how it works- she starts imagining how it could work under different situations. It is through this research she heard the whispers of a secretive company known as RHE who supposedly does research on improving humans using attributes distilled from animals. It all traced back to the infamous Dr. Hemlock who had done human experimentation to mutate a man for obscenely high semen production... for the purpose of distilling the proteins for human consumption. Turns out it was harder to sell people on eating food made from cum than it was to actually create said abomination.

Currently Telah has an entire ranch to do her research on, thanks to her boyfriend Marcus! Er, well, thanks to his sister Ren technically. Ren inherited the family ranch but wasn't really able to maintain the place on her own so there are currently no animals here other than her old dog Gospel and two goats- one to produce milk and the other to keep her producing milk. That is why she invited her brother Marcus and Telah to come live on the ranch. Two houses and two barns and almost nothing in them- someone might as well use it. So while the happy goat couple lives in one barn, the other Telah has converted into her research lab.

Telah loomed over her desk chuckling as a smile crept across her lips as she emptied the rest of the vial in her hand. "Ahaha, it is alive! ALIVE!!"

Marcus raised a brow as he walked up behind her, from the huge open doors. "Haven't killed that cactus yet?"

Telah stood up straight and crossed her arms smugly. "Nope, perfectly fine still. That is why I got a cactus- almost impossible to kill."

"Aw, well I believe in you honey- if anyone can kill it, it will be you."

Telah lowered her brows. "Just come in here to pester me?"

Marcus put a sandwich down on the table. "Came to give you this- because much like your plants, I knew you'd forget to feed yourself too." He sighed, looking around a moment. "So... I know I will probably regret asking but... what the hell are you trying to do with this research, exactly? You said you were chasing the coattails of Dr.Hemlock but her research already flopped. So... you're copying someone who failed?"

Telah put her hands on her hips. "Her research was a success- her application failed because the people did not accept it. And also she got in shit because she was testing on humans. I would do research on animals first. I would also market the product a bit better. I mean- people already eat worse things. Yogurt and cheese is basically spoiled milk. And milk is already a fluid produced and ejected from the body, and its accepted but when it comes out of a penis, suddenly it's horrible? Pff."

"Sssso, you are making a potion that makes an animal cum a lot... so people can eat it's cum? You'd need the most legendary marketing team in history to pull that off."

Telah plopped down in her office chair, spinning several times before putting a foot up on the edge of the desk to stop herself and grabbing up the sandwich. "Not necessarily that- that is a possible application. Right now I am working on the 'cum tons' part. I am shooting for a horse as a test subject because... well, their bits are already very big to start with- they are already better equipped for it. A single protein molecule is 4 hydrogen, 1 nitrogen, 2 carbon, and 2 oxygen bound together, and that is the simplest model- they can be more complex. Yea, with magic you can turn anything into anything else... but imagine how complicated a protein is to assemble on its own... and that is a single molecule. That is a lot of effort which means a lot of burned energy. And speaking of energy-" Marcus groaned, hearing her start to talk faster, he knew a rant was coming. "-that is another powerful application for this. Complicated molecule which means it can be broken down to create a good bit of power like a teeny tiny, molecular capacitor. Your body runs on a weak bioelectrical current itself after all- and energy is energy, obviously you cannot plug a battery into your wrist and hope to charge it because you don't have enough raw energy flow."

Telah immediately grabbed a pencil and started to jot down some numbers. To think a man could ejaculate enough to feed anyone- human or battery enough 'juice' to be significant in any way is a fool's errand. But also... how much is the average male ejaculate? A tablespoon worth of cum? 25 kilocalories worth, actually. But energy can neither be destroyed nor created- the energy that went into making those can be regained through dismantling them, and burning 25 kilocalories will net you about 104,600 Joules of power. At a sustained rate, that is 104 kilowatts of power. You could blow a lightbulb with your penis. Now imagine having nuts the size of yoga balls with the near-hour long orgasms of a porcine. That is a lot more 'juice'.

Marcus furrowed his brows, pacing a bit. "Okay, but like... they need to eat and sleep to have the energy for their bodies to make that. So it isn't like you've created a new power source."

"Yea but unless they are on death row- they were probably planning to eat and sleep anyway. What would you rather do for a living- stocking shelves, or jerking off? Men are always looking for ways to get off because their hormones will cloud their judgement otherwise. So instead of getting frustrated and depressed that they have no significant other- they can get rid of their load and actually put it to good use. They want to, and are going to ejaculate regardless- I can both make that experience bigger, longer, and give it a more universal application."

Marcus paused in thought for a bit before shrugging. "I guess. Hard to see past the 'powering a lightbulb with a dick' part honestly so I will just take your word for it. You do you. Just don't lose sleep over it, ya?"

Telah toiled on her experiment, and while it was a lot more complicated than she would have first theorized- there was also no particular rush... she wanted a horse as an initial test subject but they currently do not possess a horse to test on. So even if she finished the potion today- she still needs to wait for Ren to find a fairly cheap stallion they can apply the potion to.

Though the end product is going to be a potion- most of the complicated stuff is going to be magic based. But magic is pure energy, which means when it stops being powered, it stops working. You can use magic to create a ball to play catch with, but when you run out of mana the ball vanishes into thin air because it was metaphysical. Telah wants a permanent effect, so it cannot vanish when the mana runs out because it's already going to take a lot of mana to work in the first place, which doesn't bode well for its longevity. Imagine the spell wearing off mid-orgasm. Your balls would return to normal size, but still contain a hyper-sized load. Your nuts would immediately be beet red and covered in stretch marks, and the cum would get forced out of you so hard it would be like a white laser beam. Not ideal.

That is where alchemy comes in- the mediator of science and magic. Use physical materials to carry the spell effects, ingest into the body which then allows it to set itself up as your body uses the physical material to feed itself, unintentionally adopting the spell imprint into its own cells. It still needs mana to work- but instead of cancelling the spell when the mana runs out, it just pauses till it finds more and then resumes where it left off.

Without a horse to enhance, it was hard to tell just how much progress she was making. Under a microscope it seemed stable but looking at a small equine gene sample versus looking at it working in a completed horse body isn't exactly the same. Telah is also hedging her bets- she was not using a singular horse sample but rather a smattering of genes taken from donkey, horse, and zebra; a nice array of the equine family. That would homogenize the effects, ensuring they function regardless of the base body type. That way she knows the effects she is observing are a result of her potion alone and not an unexpected reverberation from the base gene's influence.

Telah wandered out of the barn late in the evening, just walking into the open field to stretch her back and legs, looking up at the starry sky. She had her back to the barn, so she did not see Ren walk in behind her, and Ren was not expecting Telah to actually be away from her desk for once. She wandered into the barn to drop off a mug of coffee for her, knowing it was probably going to be another late night. Both Ren and her brother Marcus have a French accent, both have very pale rosen hue flesh but raven black hair. Ren is oddly quite petite even though Marcus is not. Telah is average height for a woman, and Marcus is still quite a bit taller, while Ren is a good bit smaller. Ren also has a B cup bust- which helps her look smaller overall. Her hair is mid length, looped into a loose bun in the back.

Telah wandered back into the barn, smiling at the sight of Ren setting the mug on the table, then looking over all the research and equipment. Ren knows magic too- but she knows nothing of science so Telah's research is still way over her head. Ren works for an enchanting shop- so she inscribes spells onto jewelry so even magically inept people can still sling spells.

"Interested?"

"AH!" Ren spun around, in surprise!

She was too absorbed in looking it all over to hear Telah walk up behind her, and when she spun around the chair touched the back of her legs and tripped her into it! She plopped into the chair which then rolled back on its wheels and hit the desk, spilling two vials of potion!

"Ack!" Ren shoved herself off the edge of the desk to get away from the potion spilling across it, afraid it will do something to her if it touches her.

"Ah, sorry! I didn't mean to sneak up on you."

"Oh no! Your research!"

Telah quickly grabbed a roll of paper towels and started to sop up the spilled potions before they spread to her papers and got absorbed there instead. "Eh, it is okay. All of those vials contain the same thing basically anyway, just at varying potency. I can't really iterate anymore on the potions till we get a horse to put them in, so I am just sort of pre-loading potions. Start really weak and increase potency till you get to where you wanted to be."

"I could probably do it through spells myself but... guess making it through alchemy is considerably harder."

"Mm, yea. Your spell basically needs to survive someone's digestive tract and still work after being used as cellular building blocks."

"Well, I better get back inside, kind of chilly out here at night. Marcus told me to tell you not to stay up too late!"

"Hmm, no promises."

Telah glanced at the row of potion vials. The two strongest doses are the ones that spilled. That is fine; odds are those were too strong a concentration to use anyway, and no horse- so still plenty of time to replace them regardless. Telah was etching some spell runes onto clear sheets of resin- getting ready to layer them together to form a cube containing a very complicated spell; but her hand bumped the now only mildly warm coffee mug. Oh right- Ren brought her coffee, that is why she came out here in the first place, Telah completely forgot.

Telah took a big gulp, then scrunched her face up at the taste. Ooph. Maybe she shouldn't have let it sit there for so long before drinking it, oh well- waste not, want not. It did not occur to her that it tastes funky because only one of the vials spilled on the desk- the other was dumped into the mug. She never taste-tested her own potions to know what their flavor is.

That night however, when she got into bed with the already sleeping Marcus in the wee hours of the morning, her dreams were oddly erotic. She is usually so absorbed into her research that even when her body gets needy- her mind remains mostly ignorant of it. So suddenly having sexual dreams seemed a bit odd, though it has been a bit since she and Marcus had a romp, so maybe it was just her body telling her something.

Stage I : Futa is always bigger

Because Telah went to bed so late, she also woke much later than everyone else. Marcus and Ren were both off to work for the day so Telah woke up alone. She groaned a bit at the mild tension in her crotch, and as soon as she put her hand there her eyes shot open at the heat radiating off. Her nethers were fattened and blushing from arousal thanks to her exotic dreams. Her labia plump and rubbery, distended and smoother looking from being engorged, and pressing on them; she immediately found her clit. Like a stone in comparison to the soft, plump pussy, her clit is a hardened knot of pleasure nerves, throbbing against its taut hoodie. Damn, she hasn't been this horny since college. Well... no Marcus so she is just going to have to deal with this herself.

She only went to bed in a t-shirt and panties so she wiggled her hips and scooched her panties down to her knees for now and kicked the blankets down. The moment she pressed against the clitoral hood with her index the clit popped out the end! It normally isn't big enough to do that, but it certainly is now. The exposed clit is neon magenta among the pink of the rest of her pussy. Too taut, too sensitive to touch directly, she caught the hood in the crook between her middle and ring finger and used her hand to pull it as far over the clit as possible while her fingers hooked down to get to her opening. Two inside, two knead the rubbery flesh of the engorged outside.

Telah had her right hand on her right breast, flicking the stiff nipple and squishing the fat boob while her other hand dips into her passage, grips and slips back out rapidly. She can feel her pulse in her clit- because the skin around it is already as taut as it can go, so every pulse from her heart feels like someone tapping on the clit as blood pressure fights skin tension. Her hand slowly drifts down her boob onto her torso and down to her stomach. A strange feeling of pressure, but not cramping. It isn't far enough back to be in her intestines but too low to be her stomach, so what the heck is it?

A sudden, strong but short lived shockwave of pleasure from her UPPER crotch caused her to pause her fingering. What the heck was THAT? It felt good though. She slowly started to finger herself again, and another shock hit her. Oooh, no idea what that is but it feels really good so it can't be bad. Her pussy twitched an a clear gob of lube dripped from her urethra to spread around. But... that isn't where a female's lube is supposed to come from. The pulses of pleasure came from her upper crotch but did not radiate very far- but lingered and thus started to build up in her lower crotch, as if resonating with the pleasure already coming from there. Telah's face started to turn red too now. Odd pressure building in her lower body- too spread out to pinpoint its exact location.

Aaah, the two pleasures are so strong together. She feels feverish as her fingering becomes almost ravenous. So horny! Her eyes are wide as she can see her clit bulging between her fingers, while laying down flat, through her cleavage. It must be huge now! The magenta starts to darken even more with pent up blood pressure as her clit starts to turn purple! Large and bulbous, glossy smooth from internal pressure! Her pussy gets fatter, projecting even further off her like a half-dome! Woooah, that isn't supposed to happen, either.

Her fingers could not reach around its curvature in a full laying position and slid back out more than she would have liked, but as her hand was forced back she also realized that the two pleasures were happening regardless! She paused her fingering and the pleasure just kept ringing on its own. Her pussy started to shove even further out of her, deforming it, going well beyond any normal human shape, but... only her upper pussy stretched further out, not the lower portion; her vaginal passage did not get any longer. Urethra became stretched further and further out, and pulling up toward the growing clit as it tried to rob more flesh for itself, dragging the urethra up to its tip as it deformed. The portion of the clit exposed to the surface is only the glans, the rest spread around the vaginal opening, and is why they get so puffy when aroused. But now it's mass shifted.

The internal portion of the clit is dragging itself forward, shoving the glans further out while causing the rest of her vulva to scrunch up and sort of deflate as its mass left it. Rings of muscle started to draw out from her vaginal passage and onto the still growing clit, allowing it to stand up in spite of how far out it is pushing from her... but as a consequence, without those ribs of muscle her vaginal walls are collapsing. Her pussy is getting shorter, and her womb is entering a rapid state of atrophy. The radiant pleasure and pressure from within... is her ovaries, which are now much larger than they are supposed to be, the pleasure is them shoving against their surroundings trying to find room as they try to grow still larger.

Telah's potion was meant for a male horse and transformative in nature- so when it is introduced into an organic system that is not male... it turns it male.

With every new ring of muscle added to the growing shaft, another was taken from her vagina- pussy gets shorter, dick gets longer. The urethra was dragged up to the underside of the glans already, so its bulge was already visible up the underside. The clitoral hood was dragged up along with everything else, quickly turning into a foreskin for the new phallus. Telah just gawked at her transforming member- the shockwaves of pleasure it fired into her at every pulse was already intense enough, making her afraid of actually grabbing it at risk of the pleasure shorting out her brain. When the muscle ribs dragged out of her and into the penis, it tilted downward on its own from the pressure and as soon as the muscle popped into it, it flicks aggressively back upward, throwing a gob of pre up into the air violently enough to clear her body and pat the pillow around her head or hit the headboard and miss the bed entirely. Every exaggerated flick, it bobs back longer than it was before.

Obviously at this point she realizes it is probably her potion's doing but not enough brain cells are currently available to figure out how it got into her in the first place.

With a mix of pleasure and ache her ovaries were dragged forward struggling to find room and being drawn out by her vaginal passage inverting; they fully pop out. Normally two testicles trying to pop out at the same time and getting stuck for a moment in the muscle of her pelvic floor would hurt... but hers are not built like that. To increase fluid production Telah hybridized them with a prostate... which feels good to be squeezed. As they struggled to both pop out at the same time out of an opening that isn't big enough for two at once- her pussy clenches powerfully on its own and oozes the remaining lube built up inside as the labia knit themselves together- forming a scrotum to catch the new mutant balls.

And with that- her vaginal passage was no more, all of the muscle now stood her clit out as a penis that looks about eight and a half inches long. The automatic pleasure started to fade quickly, and Telah took the opportunity to catch her breath.

She smirks at the twitching dick. "Well that is certainly interesting... I am pretty sure my dick is bigger than Marcus', heh." Her expression sobered up as she thought for a moment. "The coffee the other night, shoot. The potion must have spilled in it, but I forgot the coffee was even there, I was just frantically trying to clean up the mess on the table." She groaned. "But that means this is only the start of my transformation." She gently touched her left hand down its length. "But... first... I should... observe its functionality."

She let go, holding her hand flat over it and flexed the muscles that would have formerly clenched her pussy- causing the cock to jump and slap her palm. Ooooh, that feels really meaty. It is so... heavy for its size. For how long it is- it is also very thick, so she really does have her own boyfriend dwarfed. The foreskin is a bit bulky too; even when fully erect and the foreskin popped off the glans, it still bunched up a bit under the glans, a bit more flesh than is needed. Her balls are the expected chicken egg size- though slightly more bean shaped than simply oblong- since they are technically hybrid prostates. Given all the equine and endowment spells she custom rigged for this potion- she doesn't expect those balls to stay that size for long.

Telah used her right hand to gently cradle the scrotum, then gently squeezed and the balls radiated a dull pleasure before scrunching up, popping out of her gentle grip a moment to hug her pelvic floor. The urethra flexed wider a moment and a fat bubble of pre appeared glistening on the head. Telah grabbed it with her left hand and twisted on a downward swipe, spreading it over her new meaty cock. The glans still feel like her exposed clit used to- so a bit too sensitive to touch directly, so the extra foreskin helped act as a buffer so she did not unintentionally bump the corona when her pistoning sped up.

Telah was trying to picture Marcus holding her legs up and thrusting into her, but with this meat staff between her legs the thoughts kept shifting to Marcus instead bobbing up and down on her cock, with his slapping against her belly as she fully sinks in. Then her masturbation stuttered- stopping a moment as she unintentionally thought of Ren. That was weird. But what would Ren be like in bed? Ack! What is she thinking? Wait- her genitals have inverted, which means the hormones the new balls produce might actually be forcing her to become bisexual. Aaah, but still- don't think about your boyfriends sister! What about that cute short haired girl in college? Or that super serious professor with the huge tits- and she never fully buttoned up her blouse!

Telah's pleasure spiked further, she turned her head and bit a pillow to muffle herself as she moaned loudly, the dick throbbed stone hard, the glans once again turned a pale shade of purple and she felt an odd pleasurable feeling sweep down her entire body, getting stronger toward her crotch. Her prostate rung, then the ripple of pleasure resonated with her mutant balls causing them to swell a tiny bit before clenching hard. Telah gasps as she realizes what a mess this will make at the last minute, turning onto her side, so the beam of white fired off the side of the bed and slapped the wall! Each shot a thick gob with a trailing rope of white, firing off four that hit the wall and then another three that just burbled out of the cock.

When her dick went flaccid the dense foreskin almost caused it to look round as it retracted. It looks kinda cute all tucked in sleeping between her legs. Telah groaned, knowing she better get up and get to work. But today she needs to completely shift momentum and try to invent a cure for her potion! It might be cute an innocent now, but the version of the potion she drank was the most potent.

When she sat up to pull her panties back on she instinctively went to brush something off her inner thighs- but realizing it was her own balls. "Oh. Right. How do guys walk with these things?"

Telah plopped down in her chair and started to go over her notes. Turning horse was a lot easier because what the horse looked like ultimately was an afterthought. She could not simply cast a human transformation spell on herself because that would turn her into whoever the spell was modeled after, not herself. Probably why human transformation spells are extremely rare, and she doesn't even have any herself. Generally you use the counterspell to undo something like this but A; it is a custom made spell she created herself, there is no counterspell yet because she'd be the one making it, and B; it was ingested via alchemy, so it isn't a traditional spell effect in the first place.

She kept shuffling around in her chair. Hrm, her legs feel... uncomfortable, sort of. She cannot sit still. With a grunt she gets up and stretches, but almost teeters over in surprise when the muscles remain locked up when she attempts to release them! Her legs are so stiff, she can for a moment feel her muscles squirm, twist, enlarge. Her thighs swell bigger from the knee up, but then her butt cheek firms up, clenches and swells bigger and rounder! Then it slowly relaxes again. She did not even need to look at it- she could feel how much bigger it is by how snug her pants now fit! Telah groaned again sitting back down, having to be careful because bending over at all caused her panties to not wedge into her genitals.

Slowly as the day wore on, her concentration started to fade. The closer to when Ren and Marcus got home, the more she thought about how they would react when they find out. Will he be disgusted by her mutations, or want to ride her pole? She looks down at the huge bulge in the front of her pants. Maybe pants was a bad idea today. Her cock is trapped half erect- too horny to go soft but too cramped and folded over on itself to be able to fully erect. Her balls felt oddly pent up too. She always thought that was men exaggerating, Telah never thought they actually do get pent up like that. It was sort of like having a full bladder- a nagging feeling in the back of your mind, a tinge of eagerness from your physical body to release. But, not a sharp feeling like an overfull bladder... since urine is acidic- semen is not.

"Maybe if I get off, I can keep this beast a secret for a bit longer? No use worrying everyone if I can figure this out on my own and just sweep this under the carpet. Okay big guy, you win, let's get you out ooOHHfu-huuck."

Telah sat up straight and bending forward like that squeezed her balls in her overtight panties, causing a shock of pleasure and forcing a burble of pre out against them, wetting her confines. She can't even bend far enough forward to get out of her chair normally! She swat the handle behind the back of the chair to let it bend back, so she could somewhat straighten herself without getting up and grabbed her pants and panties at the same time to yank them down, but tugged on her cock! It is so pressurized it is actually holding her pants on! She had to hold the elastic waist out with one hand and reach in with her other to grab her ballsack and pull it all out before yanking her clothing off!

Well, her balls aren't just full FEELING. They have grown to about the size of a baseball each- an oddly shaped baseball anyway. Her cock almost seemed bloated in appearance- it got slightly thicker in the middle before tapering off again at the end. The glans are already reddened while the corona was a shade of violet. Her foreskin actually made a quiet *smeck* sound when she pulled it back far enough to pop off the glans fully, like a goodbye kiss. She snapped the back of the chair back upright fully and started to pound her meat. In this position she could feel her taint press into the chair with each downward hit against her lap. It felt quite big too... wait, did her taint enlarge as well?

This time her right hand worked the shaft while the left grabbed one of her boobs- working her shaft so aggressively was causing her boobs to jostle around energetically in her shirt because like usual she doesn't bother with a bra, unless she is going out somewhere.

"Fuh- fuck. The horniness... might actually be speeding it up. It is a transformation based on sexual activity... the more these body parts are used the higher the mana circulation to that area becomes... feeding the transformation more power."

Which means masturbating may be both making it worse and better at the same time. It is currently worse- attracting mana to the affected area. But once she gets off, it goes back to sleep and her body is no longer horny, cutting the mana flow to a bare minimum. So how helpful it ends up being relies entirely on how fast she can get off.

Her head starts to feel feverish again, her thoughts swimming. Her nipples feel larger in her left hand! Rather than spark worry or inquisitiveness, the hormones just cause her to think of how hot that is as she grips the nipple between just index and thumb and rolls it. Her pleasure radiates a bit higher, a bit higher, then... almost.

Her eyes widen at an abrupt shock of pleasure deep inside- her pure prostate bloating tremendously, rubbing itself against its surroundings to make space! She felt a subtle squirming in her anus then from back to front; her taint swelled bigger! She actually had to scooch her butt tighter to lift it off the seat- because it was pressing into the chair harder than her actual ass! The expansion went behind her nuts and her balls clenched to her, the scrotum starting to smooth out as it overfills- her balls audibly gurgle as they grow! Immense heat radiated off them and she could feel their weight increasing as they fill and swell bigger and rounder, now the size of softballs!!

From the bottom up- her dick started to thicken very slightly and get a full inch longer still. The dick beyond the foreskin got longer so the foreskin flesh was no longer bunched up just under the corona. The foreskin and balls turned a shade darker. The urethra swelled wider in anticipation of the huge load, but also grew a bit longer still- making it almost look like her cockhead had a pair of tiny lips. The urethra slightly too long for the penis... because a horse has a urethral procession. Which means she is already starting to lose a tiny bit of her human shape.

When she finally erupted cum, she was startled by how strong the blast was and immediately kicked herself away from the table with a foot against it, rolling back in her wheeled chair. Each blast flies so high straight up into the air that after the first one landed; the others made a clapping sound against the already wet floor. When it turned flaccid, Telah marveled at its weight on her crotch as the heavy slab of meat wobbled back and forth. After a minute her head cleared enough that she quickly stopping swinging her heavy dick around- realizing she does not want to antagonize the changes. She slipped her panties on but abandoned her pants there, using them to help sop up the pool of cum before darting through the field back to their house to get a skirt so her genitals aren't strangled to death in women's pants.

When getting her skirt on though- she paused at the sight of her reflection. Her shirt was showing a tiny bit of midriff... it didn't before. Telah did not notice right away because she isn't wearing a bra; but her breasts have actually enlarged slightly too. She pulls up her shirt to look at them a moment and her nipples look like thimbles! Her areola are very slightly wider as well. Well that is... not normal. Her potion obviously isn't supposed to enhance breasts because a horse doesn't have breasts in the first place. Maybe she unintentionally discovered an error in her concoction by being her own test subject?

Telah jumped in surprise as she heard the other two get back. They work the same hours so while they have different jobs- Marcus and Ren both leave and return from work at the same time, in separate vehicles. They also sometimes race one another on the final stretch back home- because there are so few vehicles on the dirty old road that there is no police monitoring it.

Telah shuffled herself around in her clothes enough that hopefully no one questioned her appearance. Just play it cool. No use worrying everyone- especially Ren. Unfortunately her horniness is being enhanced by the changes too- and causes the changes to speed up... so unless she figures out a way to rein them in the changes are going to keep happening faster and faster. At dinner Telah was a bit nervous, trying not to stare at Ren. Argh, why did she have to think about her sexually before? Now she keeps flashing back to that fantasy. And Marcus... they haven't had sex in a while. What if he doesn't mind? What would he feel like stretched around her massive throbbing- CONCENTRATE!

The silverware beside her plate rattled at a dull thud as her cock became hard enough to flick out of her panties, lift the skirt and slam into the bottom of the table. Her face turned beet red but she said nothing, trying to pretend she didn't notice.

Ren looked at her a bit concerned. "Are you okay?"

"Hmm? Oh y-yea, just bopped my knee on the table when I shifted."

Telah started eating slower so she would deliberately be the last one at the table- because now she cannot get up without her dick softening again. After dinner Ren plopped on the couch to watch TV in the main house, Marcus went to the far barn to tend the goats since he was at work and couldn't do it during the day. Telah only managed to get her meat log soft enough that she could fold it in half and stuff it into her panties- it still formed a bulging loop at half-erection. She darted across the patio and quickly across the edge of the fence of the field to the second house where her and Marcus live.

Cold shower! She scurries upstairs, discarding her clothing onto the floor of the hall past their bedroom, toward the bathroom at the end. She needs to kill the erection completely, but hopefully without having to masturbate because it's only going to get stronger. She jumps a bit at the cold feeling on her dick after closing the bathroom door! Her dick is already so long that turning sideways just inside of the door is enough to brush the edge of the sink counter with her dick. Granted- it isn't a very big bathroom, but still.

Telah's dick started to bend against the edge of the counter and flick up past it as she paused at her own reflection. The new genitals are making her bisexual- which incidentally caused her to be attracted by her own appearance. Her boobs looking a bit fatter than usual, and already more than a handful to start with, then a dick bigger than her own boyfriend between her legs and testicles big enough to fill an entire palm each.

She snaps out of it hearing the door downstairs close. Ack, Marcus is home. Get rid of this meat pillar! She turned the water on cold, wincing as she forced herself into the shower anyway. The cold against her boobs was too much- she leaned back against the wall keeping her hips forward, thrusting the cock into the stream of cold water. The cold temperature of the water caused her skin to firm up, making the water bead up on the surface of her tits and cock, forming constellations of glistening water drops on its surface. In trying to kill her boner she managed to somehow make it even better looking than it already was.

Because of her balls growing again, her scrotum was already pretty smooth from lack of room, but the cold water pulled them glossy smooth, hugging to her crotch to evade the cold touch. Nipples were so stiff you could use them to cut glass, her dark near-black areola became bumpy. But even still- she could feel her heart beat harder in the base of her cock than she could her own chest. In spite of how cold the surface became the coursing blood in its core kept the shaft hot. She was more likely to freeze the entire rest of her body than she was the dick. The cool tightened all her pours so her entire body felt so smooth and would look glossy smooth even if you dried her off.

Telah wags her hip slightly, watching the dick bob from one side to the other, trying to coat it as much as possible in the cold but it refused to go down. The feeling of the water streams drumming on the taut skin surface was stimulating it. Her back started to hurt in this position so she stood up straight again, which caused her dick to tilt further into the middle of the water streams, and now the streams caught directly against its head instead of at an angle. The water flow against the glans caused them to flare and the shaft to buck!

Telah was stunned a moment, not knowing what to think at the sound of the cock thud against her! Bucking in this position- her penis is big enough and hard enough to thud against her lower ribs! Ah crap... that is how a horse masturbates! They don't have hands, but they still get themselves off by slapping their dick onto their belly. She can't stop it! What is she going to do, grab it? That is exactly what the cock wants!

Telah closed her eyes and tilted her head back, facing the roof defiantly. Maybe if she doesn't look at it and does not touch it, it will go away. But no, the dick is in charge now- if she doesn't take care of it, it will take care of itself. From the bottom up, the veins on the shaft fattened, stretching the skin over them as they project out from the surface and turn purple. The glans start to flare wider, deforming the shape slightly and the already purpled corona swells up a bit, becoming bumpy. She can feel a tightness and stiffness spread around her cock on top of the erection it already had- the blood from the fattened veins transferring, saturating and filling it as the shaft grows still bigger.

The glans brush the round undersides of her boobs. Her balls and foreskin darken further, now looking a grey-pink. The added shaft grows beyond the foreskin as it bulks up further with the color change, slowly transforming into a sheath for an inhuman phallus. Her heart beat drums on the inside of the fat veins as they grow still bigger, digging further up the expanding cock ahead of another swelling. The dick dips forward from the increased weight before the water tickling the glans causes it to grow even more erect to match its new size, yanking it back upright. Now the glans wedge between her tits- knocking them out of the way a moment! Her breasts on the head causes it to flare even wider, the edge getting bumpier.

The dick bobs forward again as the shaft grows causing the blood pressure to drop. The much wider glans catch even more streams of water now acting like an open umbrella for the shaft before it clenches back, sending a new surge of blood to the shaft making Telah dizzy- depriving her brain of oxygen to feed her cock instead! *Thud*, the dick drums against her chest now in her upper cleavage! The glans flare so wide and tight it feels like the cock is trying to shove her breasts aside to make more room!

Her breathing is stuttered, a quiet whimper under her breath knowing she cannot stop this beast she has grown. Her lust has taken a will of its own. Her legs tremble a bit as she feels another swelling, it bobs forward again. More and more cock slides out from under the foreskin- the edge of where new flesh peels away from the old. She opens her eyes and looks down just in time to see it slam into her again- this time flicking water droplets off the taut head and into her face! The glans flare so wide they eclipse her cleavage from her own perspective! Her cock is long enough to have grown PAST her tits!

A spark of inspiration in a last effort of defiance- she claps her hands over her breasts, trapping the shaft in her cleavage so it cannot beat itself off against her. Her huge balls bounce gently off her crotch one and then the other- slightly out of sync with one another. Weaker but more rapid now, she can feel the drumming of her heart as pressure in the fat veins. Telah is still but the dick is not- she can feel the gradual tug of flesh on flesh friction in her cleavage where water is pooling now. It is growing very slowly still, and the growth is making it longer which causes it to rub against her breasts. Her eyes widen as the glans slowly get closer to her face. Her rapid breathing- she can feel her own hot breath against the cooled surface of the cock. It brushes her bottom lip lightly. Too delirious from blood loss and hormones, she reflexively purses her lips without thinking and kisses the wide head.

Telah staggers back against the wall to brace against, her vision explodes into white dots from the intensity. Her balls yank against her and her water balloon of a prostate inside of her clenches and compresses- firing so much fluid up out of her so fast it feels like someone turned on a garden hose. As the glans clench in orgasm the skin compresses around the urethra which grows a bit longer- now projecting out from the head as a depression appears around it. The overall glans still a bit too uniformly round for a horse, but definitely not human, either.

Her heaving cries of pleasure end up more like breathy squeaks because she was already winded. The cum blasts were so powerful they make an audible *thud* as they hit the roof over the shower! The ropes hit hard enough to scatter sticky drops all around the shower before the water dilutes it enough to wash it away! One blast, two, three... four, then finally they weaken enough to not strike the roof. Five, six, seven, and a weak burbling to finish it off. Her urethra is much wider now though- so each rope was almost as thick as her pinky finger, so those seven shots was like someone kicking over a small can of paint.

Telah caught her breath as her once again flaccid member flops between her legs far enough to slap her knees before it started to reel itself back in toward her crotch. When packed away- her foreskin is thicker than a wine bottle. It feels like she is lugging a full bag of groceries by her crotch. At least there was no mess to clean up this time- since she was already in the shower. Celebrate the small victories, right?

She pat herself dry, grumbling at herself in the mirror for almost a half hour, trying to think of a plan. Every time she gets horny her new bits activate. Simply not touching them clearly no longer works- it will get itself off without her input. Using the transformed parts invites more transformation, but more transformation also makes it easier for her to become horny, which then creates a feedback loop, speeding her transformation indefinitely.

She snapped out of her thoughts a moment when she heard Marcus call to her through the wall- the bedroom on the other side. "You okay in there? Didn't fall asleep in the shower and drown, did you?"

"No, I am coming out."

Hm, actually she does have one idea, but it isn't ideal. At this point- ideal isn't an option, she takes what she can get.

She just walked naked to the bedroom. Marcus was on the edge of the bed flipping through messages left on his cellphone while he was at work, so his back was to her.

Telah walks over. "Marc~ feeling a little frisky? It has been toooo long since we last played~."

Marcus smirks and went to flip his legs up onto the bed and look over at her but she flopped onto the bed at the same time, so heavily that the mattress sunk in enough to roll them both into one another in the middle of the bed! Her enormous flaccid dong flopped over her lap and landed on his instead! They were both stunned silent gawking at it, but Telah recovered faster.

"Ssssooo, your sister sort of spilled one of my potions into my coffee, which I drank..."

"You're turning into a horse?!"

Telah laughed. "Oh gosh no. It is much worse than that. It was the potion I didn't think I would ever even end up using because it was a laughably high concentration that will most likely result in some sexually consumed beast with genitals too big to use and so monstrously enormous it just makes females laugh at it nervously, if not gag and run away."

"..."

"The coffee was still fine, though."

"Do I need to start dropping you off in a play pen when I go to work, so you don't hurt yourself?"

"Technically your sister did this. Ack! But don't tell her that!! I am trying to keep this under wraps so she doesn't blame herself. It was an accident, y'know?"

"If your dick was any bigger you'd be able to fall forward and catch yourself on it like a human tripod. I am pretty sure she is going to notice when you need pants with three legs."

"Oh it's not that bad. I mean, it definitely will be, but it's not ye~et~." She turned to face him which slid her only semi-dormant dong further across his lap.

Telah's hair is dry again and since she just got out of the shower it feels extra silky and soft, and since she never tied it back up, it's all over the place. Her breasts are also bigger and her nipples abnormally large. As worried as Marcus was for his girlfriend, he is still turned on and she only seemed concerned about getting into his pants at the moment. He is not bisexual, but as masculine as that behemoth is- the person it is attached to is definitely still his gorgeous girlfriend. The contrast it created by being attached to such a pretty woman actually sort of made it more hot.

He turned to her, cautiously placing a hand lightly on the darker pseudo sheath as the dick slowly rolls itself out. "So, you want to try to peg me with this thing, huh?"

"O-oh, you actually want to try to take this?"

"Isn't that what you wanted?"

"Well yea, but I figured... no, yea, we can try that. You wanna be on top?"

"Not particularly."

"Doggy style it is then!"

Well that means he gets to feel her tits squished against his back anyway. Bottom is also less work- and something about taking an active role in impaling himself on a dick the size of his arm made it somehow feel worse. So she can do it.

Marcus squirmed around on the bed, kicking his clothes off to the side without actually getting fully up. After a long day at work- he ain't standing up again unless the house is on fire. Before he could drop to all fours, Telah crosses her arms over his chest from behind and scooches up against him, pressing her still-erect nipples into his back. Her massive semi-hard dick flopped against his back, trailing up between his shoulder blades. Good thing the human intestinal tract is actually 26 feet on average, and her dick isn't quite THAT long. Yet.

She rests her chin on his left shoulder and softly chuckles into his ear as she fondles his chest, flicking her index over his tiny nipples. He is a construction worker so he has a fairly muscular build from lugging around all the heavy materials. His abs are not super noticeable but you can definitely feel them if you run your hand down his body. Telah stops her hand with his semi-hard dick between her fingers and tugs at the flesh at the base, hefting his dick and balls at the same time. They feel so light compared to hers. Marcus is a good sized guy- she was perfectly satisfied with his member, so comparing its weight against hers really drives home just how monstrous she already is.

The drum beat of her heart coming to life in her shaft, like her dick swallowed her heart for itself was her queue that she better try to get it in. Fully rigid she might not even be able to bend the wide glans far enough to fit it inside. Telah kept one hand on his chest as she leans them both forward and aims the beast with her other hand, then slowly leans them back upright, pressing the dong against him. Slow... don't force it. He isn't exactly used to getting penetrated, and there are few people who have ever taken something like this in the first place.

Luckily for them both- the equine cock was quick to start burbling up pre to make itself as slippery as possible- she technically has three prostates after all. They both gasped when it popped in abruptly, the wide corona flicking back out fully once it was inside, making it just as hard to remove as it was to get in. The shaft behind the glans however is considerably narrower, and slides in and out just fine. Telah thrust into him while holding his body to hers, both still upright for the moment. She leans forward and a curtain of her soft hair covers his left arm. Her left hand on his chest, her right hand tracing the curves of his abs. She can feel her cock in her right hand. It is so big- she can feel it push into him, behind his abs.

As she started to work up to speed and feel his internal muscles relax to let her in easier, her grip on his body loosened and the force of her thrusts knocked him over onto all four- she quickly flopped over him to follow. Her hands over the backs of his, knitting their fingers together, her hair still draped over his left shoulder pooling on the bed under his face. Her bouncy taut breasts rolling around with her thrusts against his back felt great.

Her dick rubbed against his own prostate, sending pleasure pulses through him- but it is so wide that his penis is only half-erect, because her cock is partially cutting off the blood flow that would normally engorge it. Her meat pillar digs so deep into him he has to time his breathing to her thrusts- because it feels like her dick shoves into the bottom of his lungs and partially winds him on the forward thrust! He felt so full, so... at her mercy. It felt good though, and her heavy breathing and breathless moans in his ear added an emotional layer to the pleasure too- knowing how much she was enjoying herself.

For Telah- she had never penetrated anything before so this was all new to her, and it felt so good! His anus grips her reflexively in response to the movement, but the muscle reaction time is a ripple effect, which feels like it is massaging her shaft. He grips her so tight! Or... more accurately- she is so large that he is stretched so tight around her. When she thrusts fully in, she can feel his normal sized balls against hers- Telah's testicles are so huge that Marcus' fit almost perfectly into the cleft of her scrotum. When they hot orbs collide with one another they create a soft clap thanks to the pocket of air trapped between the two.

She can feel his taint pulsing from the pleasure, getting close to his orgasm before hers. His taint presses into the upper portion of her scrotum- the trailing flesh that dangles her nuts with his. His half chub starts jetting cum as he grunts and braces himself a bit harder for a moment against her thrusts. Knowing she made him cum like this turned her on- she started thrusting more aggressively. Less speed, more power. Her huge balls partially caught on his as they started to clench, lifting his along with them to squeeze them together.

Telah rest almost all her weight on him a moment, holding still, feeling herself flare hard against the walls of his butt. A few quick micro-thrusts to tease herself over the edge, then drew back once more as orgasm hit. She sat upright feeling the blast of cum rushing up through her, then thrust in fully one last time to blast off! It felt like she was ejaculating directly into his stomach- backwards. She probably managed to get cum halfway back up his digestive tract. When she finally pulled all the way out- the glans created a vacuum seal against his butt so it made an audible *pop* as it came out. There wasn't even any cum that leaked out- she pumped it so far into him that it wasn't leaving anytime soon.

Marcus let his arms go first, flopping face first into the pillow before his whole body flopped down limp, too tired to move now. He groaned and spoke muffled into the pillow. "You fucked me so hard my back muscles are all twitchy..."

Telah watched the muscles in his lower back well up forming a pudgy little cone over his rump. Marcus groaned louder, reaching up with a hand to feel his ears. He was... tingly. A pleasurable tingling in several parts of his body all at once- his tail bone, his ears, and his balls, slowly creeping up his shaft! The muscle mass above his rump started to flex in pulses, trying to stretch the skin over it into an increasingly elongated cone shape before the bones in his spine clicked and started to extend as well- adding new, smaller vertebrae! His ears elongated; the cartilage spread out becoming thinner as new muscle formed in the base to pull the base narrower, standing the ears out and giving them mobility! The ears of a horse!

Telah watched his anus close tightly, the muscles clenching and then swelling up, darkening the flesh! It ballooned in size with added muscle control as it turned into the anus of an equine. The cone stretched into a little tail, then longer and narrower, then longer, and longer still. Wait, that isn't a horse tail. Telah just observed, her lips literally tightened shut in nervousness of how he will react. Marcus flipped over immediately feeling the new tail swinging around behind him, but when he sat up to look down the first thing he noticed was his enlarging balls! Rolling out of sync, his two balls slowly grow larger and heavier while the scrotum darkens rapidly- becoming even darker than Telah's! His cock starts to inflate back to a half-chub against his will as it enlarges, growing thicker and considerably longer... though, Telah's is still bigger in both dimensions. His entire dick also became as dark as his scrotum, which is also different. Telah's isn't that dark, and also the darkness only goes as far as the pseudo sheath- it never advanced past that.

"What the fuck i-eeeeeeh-!" He shivered from the prickly feeling at the end of his tail as it bloomed into a tassel of black hair. "What the heck?!"

"Wait, hold on, I need to test something."

Telah started to swipe her fingers through the air, leaving a trail of glowing energy as she concentrates, occasionally spinning part of what she has already drawn around to add more in a different dimension as she expands the runic array.

She popped one of the runes out and nudged it through the air toward Marcus. "Here, hold this one."

"Wha-? I can't-"

"Just hol- oh wait not that one." She took it back and pushed another out. "This one."

Marcus carefully cradled the floating rune. It has no solid mass so actually trying to grab it would destroy it- but the chakra circulating in his body reacts to it, allowing it to sort of sit on his hand without actually physically touching it.

"For the record I reaaaally don't think it is a good idea to be doing this in the bedroom."

She took the rune back and re-added it once she filled in more of the array. "Oh relax."

She clapped her hands together as she activated the runes and a shockwave of ghostly blue energy fired up her arms and tapered off into her torso as the runes vanished. She yelped and fell back onto her butt a moment, gawking at her giant floppy dong as it started to lighten! The glans pulled inward and projected further forward restoring the helmet shape of human glans and the overall penis and balls shrank! It regressed to a bit smaller than Marcus's new and improved size!

"Aha! I was right, it worked."

"Okay... start explaining. Starting with; why the hell am I part horse now? You gave me your horse cooties."

Telah laughed. "Yeah that is pretty accurate. But it also acted as a sort of equalizer of my equine traits- Equinizer~!" She seen he was not as amused at her naming it. "Okay, well, you turned part equine because when I ejaculated I dumped all the mana building in my body into you. The potion effects are gathering it to transform me, so it was shapen as equine transformation. While mine is an amalgam, you obviously got a drastically diluted version" She pointed at his tail. "Horse do not have a tassel. And donkey have bigger ears. You must have gotten straight zebra traits. No modified bits included."

Telah explained that Marcus is not transforming- he only transformed at all because she used him as a mana sink, so he won't continue to transform unless she dumps into him again. But her potion doesn't do anything without a power source. It was growing the number of traits she had to draw in more power and transform faster, but dispelling all of the mana already built up into her body killed its momentum, resetting its speed snowballing.

"My body is defaulted to human obviously, so the equine traits have to fight against that default in order to take over with their own instructions. Without mana feeding the new instructions to more cells to assert itself my body starts to naturally push back- allowing me to use a generic reversion spell on myself and it actually worked... sort of. Obviously some of my body was fully changed already and can't be reverted without new instructions to tell it what it's supposed to be. But the cells that were in the process of being converted still went back, backpedaling the transformation a bit." She paused in thought for a moment. "Hmm, I guess the middle cells are pleophoric currently."

"...?"

"It is like pluripotency but not quite as flexible."

"..."

She lowered her brows. "Cells that do more than one job."

"Ooh, okay. Why is stopping the potion so hard? Can't you just do the same thing you did initially, only backwards?"

"Part of what I did initially was put it into a physical medium to act as a permanent anchor point for the spell effects, and reversion spells don't work like that. I mean- you could technically do it, it would just interrupt your chakra flow; the bioelectrical signals your brain uses to operate your body... which would be fatal. It was a custom spell made from splicing effects from many different spells- I used several different types of equine and also a lot of different endowment and duplication spells, so to make a proper reversal spell I need to splice together the reversal for ALL of the component spells, isolating only the part that reverts the particular trait I used..."

"...duplication?"

"Normal endowment spells are like magnification... they make your junk bigger- they still function the same. In order to increase semen volume so vastly, I use a partial duplication spell. Proteins are a complex molecule, so rather than try to assemble it from mana alone which would be stupidly hard- I clone the existing ones, using the existing semen as the blueprint. Mass condensation and elemental transmutation are the fundamentals of all transient magic. The more complex the alteration, the more power you require to pull it off. Copying what is already there however- is very low effort."

"But, you are still transforming... right?"

"Yea... I nuked its momentum, but it is still active and will build up to it again. I can dump into you to slow it but that also turns you more into a zebra. If you are completely transformed then I can no longer use you as a mana dump- it would be like trying to use a wet sponge to dry a counter. It already hit its peak saturation; it isn't going to take anymore."

Telah agreed to let Marcus tell his sister what happened, if he made up some white lie that he spilled the potion on Telah so Ren never finds out she caused all this. Marcus of course immediately told his sister she was unintentionally at fault and just told her to make it seem like he lied to her for Telah's sake. He has equine ears- she was going to figure it out on her own anyway. Marcus told Ren that very night before returning to his own house because Ren knows magic herself, and can at least try to understand Telah's notes to try and help with the reversal research. Telah gets horny often, and she cannot think straight when she is horny which really hinders her research speed.

As soon as Ren was informed of the situation, Marcus returned to bed. Telah herself already fast asleep, passed out with her hair fanned out around her head like rays from the sun. She had gotten that monster member off three times in a single day so she was pooped. Marcus fell asleep quickly as well.

Marcus had to call in sick to work for... obvious reasons. He also did not wake up Telah when he got up- hoping that leaving her asleep would slow the changes. If he is around him, he might unintentionally turn her on and speed up her de-evolution. Telah independently came up with the same idea; but got a first-hand account of it not working.

Stage II : Beast off its leash

She remained in bed and used the idle time to map out in her head a means of approach to her research once she gets cracking. She decided the biggest problem with coming up with a cure is simply that her transformation isn't done. It has never been tested so she does not entirely know how everything will turn out. If she doesn't know exactly how she is going to transform, she cannot know exactly how to cure it, either. But Telah cannot allow it to finish because... well, she would be a mutant horse then, and unable to do research in the first place.

She had woken up with a morning wood and avoided looking at it- her body thankfully helped with that. She woke up with her breasts a bit larger still, held mostly upright with her on her back thanks to the loose night shirt that they blocked her vision to her body below. That was an odd variable- why were they growing? Stallions do not have tits. She started at D cups and both growth spurts to her breasts gave her at least one additional cup size- but just from eyeballing it, there is no way she would fit into an F cup. So it was more than a single cup size per growth. If she took the shirt off they would probably flop to either side of her and rest on the bed instead of her chest.

Telah started to get nervous as she felt it creeping up. The weight sitting on her is increasing. The cock goes from fully resting on her to hovering slightly over her as it clenches, the veins fatten, then the shaft bloats up even bigger before resting down again for a moment. The size she managed to regress last night is returning. Every time it hops off her it comes back down a bit longer- she can feel the heat radiating off it higher and higher till it starts poking the underside of her huge soft boobs!

Telah attempted to keep her mind on research, unfortunately the giant dick between her legs technically is her research. Isn't it sort of weird that humans who are almost entirely hairless have hairy balls, but horse who are covered in hair and fur have entirely hairless genitals? There is technically hair on a horse's balls but its unnoticeable peach fuzz. Thus far, her research does seem to be a success, all things considered. Her dick is growing, her fluid production is massive. Imagine if it had managed to get into an actual horse. The shirt fabric started to pull tight, her breasts getting shoved aside as her cock continues to grow- Telah quickly averts her eyes, looking at the roof instead.

Her growing balls cradled by her inner thighs, she can feel their head and weight too. They start to bob slowly up and down in the scrotum, bumping her crotch off-rhythm. It sort of felt like the lapping of waves against a beach. Plap, plap, then recede, then plap, plap again. An ocean of hot, thick cum, dammed up, needing to bust! ACK! Don't think about that! She feels her cock clench and hold for a moment, hovering off her as it gets impossibly hard- the fattened veins webbing its surface jut off as thick as fingers, making her feel dizzy and almost drunk as the blood flow is stolen from the rest of her body to stuff this dick! She gasps as she feels it pop out of her cleavage again and she jerks her hips back, arching her back a bit for a moment trying to draw it back but the corona flares wide, deforming the human glans back toward equine- and also catching on the cleavage, preventing her from drawing it back.

It pleasures itself when it hops! She wrapped her arms around herself to pin it, but then the feeling of the cock growing against her arms pleasured her! She brought her arms to her sides and just gently pinned the cock down without fully gripping it. She fought the urge to grab and squeeze her prostate-balls. Her breathing speeds up, deepens. Her abnormally large nipples tighten, tenting the front of the shirt, stretching the fabric more. Bigger and bigger. So heavy, yet still able to lift itself off her when it clenches. Just like in the shower- it wobbles and stretches closer to her face. Past her collar, lower neck, upper neck, still bigger. Bumps her chin, she tilts her head up to avoid touching it- but that clears the path for it to keep growing past her chin. Her lips tighten as it brushes over them. She has to look up at the headboard!

Her cock is so big that the only way to avoid looking at it is to look straight up at the headboard of the bed! She lets out a heavy breath that almost turns into a wheeze at the sensation of stretching in her crotch as she can feel the weight of her rolling balls increase! They audibly gurgle and grow to the size of a cantaloupe each!

"F-f-f-fuhhh-ck. If I don't masturbate the horny won't go away... and it will keep speeding up!"

With a whimper one hand cups and gently squeezes her huge left nut and a shock of pleasure fires through her making the dick jump, and splatter pre over her lips when it slaps back down on her face! She can still hurt her nuts by compressing them- she would just need to be quite savage on them to reach that threshold. Before that point- they feel good to squeeze.

Telah nibbles the corona, watching it flare even more stretching out the last traces of humanity from it. From the bottom up- her former foreskin drags into her torso and fuses to it! This causes the dense, discolored skin to get pulled further back down off the shaft. An itchy sort of pleasure and feeling almost like peeling tape off your skin slowly fires through the mass as more flesh for the shaft divides from the inside of the sheath and peels away rapidly. The skin rapidly darkens even more. Her balls and her new fully formed sheath turn almost black, but not quite. Actually- it's the exact same ultra-dark brown that her nipples are. It becomes dappled around the base where it turns back to her dark peach skin, and becomes dappled halfway up the exposed shaft where it turns to a neon pink the upper half of her cock has.

Telah looks down the length through the gap it has created between her tits, under the stretched collar of her shirt- a little viewing window down the length of the shuddering shaft. The urethral bulge was so big at this point she could probably shove her thumb into her urethra with no resistance. She starts kissing and sucking on the head, stroking the bottom portion just after the sheath with her right hand and wobbling her nuts and squeezing the left one with her left hand. It feels like someone tightly squeezing the middle as a plump ring of muscle appears around the middle... a medial ring. A horse cock is so large that it is telescopic- needing the medial ring to help back all of that meat back in when it's done. That is it, then. This is definitely a horse dong from top to bottom.

Telah surprises herself, creating a pleasure spike caused her hips to buck reflexively but it happened just as she was kissing down on the head, thrusting into her own face hard enough to bend the glans enough to pop inside! The end of her tongue could fit inside her urethra! She started sucking on the whole head- the stiff but rubbery flesh filled her entire mouth! Telah felt like there was another cock growing between her legs- her taint expanding absolutely huge into a fat arch between balls and anus! Because the urethra bends when it exits the inner pelvis- that is the point where the fluid loses a bunch of its momentum, so to compensate her taint is swelling abnormally fat to create a more gradual curvature! From behind when her balls clench up- it almost looks like she has three testicles; the third bulge being her swollen taint.

The ultra-dark brown skin spread up the taint, and as soon as it overtook her anus it clenched automatically. Having watched it happen to Marcus already she knew without looking what was happening to her. Aaaah, she needs to blow fast! The longer she remains erect the more it speeds up! She starts making micro-thrusts into her own face, which also causes her tits to rock back and forth, taking her entire night shirt up and down along with them. Her balls start thudding against her pelvic floor in their clenches hard enough to create a small echo of pleasure entirely on their own, from their impact. Her anus enlarges, but the muscles closing it enlarge even bigger than that, swelling out into a doughnut-like ring. A wad of muscle swells up on the end of her tail bone, preparing to change that too.

Telah finally orgasms and is so surprised by the force of the cum that she tries to pull out, in a flash of self-preservation. It doesn't work though. Her glans are so huge and flared so tight and large that the underside of the corona cannot get back past her teeth! She can't remove it from her mouth, its locked in place- she has no choice but to start chugging! The force of the cumshots are so strong they force themselves down her throat- causing her to gulp on reflex. She is drinking the cum automatically, like her cock is force-feeding her. It isn't like normal semen, either. Very high consistency, very heavy and very thick. It forces itself down her throat from sheer force of the jets- but is so thick it coats her throat like she was drinking paint, till she swallows and clears it. It tastes pretty good, if she is being honest.

The gulps each take in such a volume of fluid she can feel it going all the way down. The weight painting her stomach and filling it with the weight too. Sooo much cum.

She lay there panting in the aftermath, having to wait almost a full minute before it softened enough to pop back out of her mouth so she could catch her breath fully. Well... stuck like this now. Full horse package. The dappled brown flesh spreading onto her torso slightly from the mismatched genitals. Her tail still in the early stages of growing- so it's sort of just an amorphous blob of muscle at the moment and hardly noticeable. Telah furrowed her brow when she looked at her hands, then her feet quickly. Oh- she had not even noticed that happening. All her finger and toenails were now double-thick and had a milky appearance, no longer semi translucent. Yikes, that would be a bad change to happen. Hard to conjure magic and brew potions if she is reduced to hooves.

She went to the closet to get dressed for the day and did a double-take at her reflection in the full body mirror on the back of the closet door. Her night shirt was wet- she assumed it was sweat or spilled precum, but she was on her back the whole time... sweat and precum would have dropped to her torso, away from the shirt. In her reflection before she pulled the shirt off- she noticed the wetness forms two spots, not one in the middle.

"Milk..."

That is why her breasts have grown. Her potion greatly enhances fluid production- it isn't semen, but women can make a white fluid too. Because the potion was unintentionally used on a female, it is also enhancing her milk production, forcing her to lactate and causing her mammary glands to engorge massively! When she pulls the shirt off the motion causes several more beads of milk to form on her nipples and areola. Her areola are even wider than before- covering almost the entire front of both boobs, and also projecting forward a bit, giving her a slight case of torpedo-tits. Her nipples are also larger- but they have grown wider at the base, not just bigger overall. Her breasts are starting to... resemble gigantic horse udders.

Marcus in the meantime had taken care of his own morning wood in his morning shower. Unlike Telah though, his did not come with overwhelming desire and added changes; it was just a regular morning wood, except bigger.

Telah almost fell down the stairs- overestimating her body's ability to wake up after most of its blood supply was diverted to her cock. As the blood oxygen started to return to her brain the drunken feeling haze lifted and she chugged her morning coffee after adding her own cream and informed Marcus they unfortunately needed to go into town. Her hair tied loose and high and her research glasses on- Telah doesn't have the research books currently for a full index of reversals... so she needed to get it from the Arcanum. She also needed some new materials- either a resin or quartz-sheet prism to inscribe the reversal on, because it is far too complex of a spell to just free-hand off the top of your head.

"This works out though- we can go into town, you can drop me off at the Arcanum, I will get the book and wait for you to pick me up again. You can go grab the sheet prism and then come back and get me. All the while Ren continues to poke around at her own method of a reversal in my lab. Teamwork!"

"Except... we are both mutants."

"Eh, just put a hoodie on to hide your ears, no one will notice."

"I have a tail!"

"No one is going to be looking at your ass to notice. At least they better not be looking at my man's ass! As long as my dick remains asleep my skirt will hide it in all the loose cloth while giving it room to breathe." She is wearing a rather thick wool sweater- so the thicker cloth hopefully obscures her enhanced bust however slightly, while being an easily stretched material, so her boobs aren't strangled to death.

Marcus informed Ren of the plans and quickly got into his truck, Telah already in the passenger seat waiting. Marcus isn't on a limited timer- Telah unfortunately is. The more time that passes from her morning blowjob the more likely her dick is to wake itself up again. She has to clench her butt a bit to sit in seats normally- her taint and anus are so big compared to the rest of her that they will shove into the seat otherwise.

Marcus slammed the petal to the floor to race down the road to the edge of town, knowing no police patrol out in the sticks to stop them. They kicked up a fifteen foot high cloud of dust in their wake off the road as they flew down. Telah put her arm out the window to feel the wind rip past. Look at them go- her man breaking all the speed limits to help her out, oooh she could just kiss him... mmm and then- ack no, mind out of the gutter! The Arcanum is a fancy looking building- marble pillars and everything on the outside. On the inside it is kind of just a giant library. Only difference is that without any sort of magic degree- they won't let you in the front doors of the Arcanum. It was unfortunately also deep in the town toward the busy center. Telah skittered quickly from the truck into the building so as few people as possible would see her and her now giant rack.

Marcus then drove off quickly to find a magic shop to get the crystal Telah needed. His tail is exposed, but he stuffed the end of the hairs into his waist so the tail looks like a sash at first glance. He figured stuffing the entire thing into a pant leg would still be noticeable, but easily mistaken for something else that may potentially garner even more attention rather than less. Asking the shop owner for what he needs is going to be awkward, because he doesn't know anything about magic himself, all he knows is what Telah told him to get.

Ren on the other hand thought she had beat them to the punch. Telah did not know any of the clerical magics; and it is a school of magic that happens to have a whole slew of its own purification spells. Normally Ren inscribes magic- she does not really know how to cast it off the top of her head, so she ended up using almost an entire pad of paper, tearing the sheets out to assemble the massive runic array with her spell. Using a normal counter-spell will not work, because Telah's potion has a magic effect but a physical medium. The counter-spell will terminate the magic but not the physical aspect, which will just re-build the spell.

The difference in a clerical purification spell is that it also works against poisons and sometimes even disease- which are physical. It purges anything in the body that is considered not part of the normal system. The problem then was the fact that both are technically spells and thus rely on the same power source. If both are run off the same pool of mana- neither will be more powerful than the other and result in a stalemate where she stops transforming but also does not revert, because the spell is still actively changing her, so it will transform her at the same speed the purification is trying to un-transform her.

So then Ren layered it with a mana purge spell. The clerical version is not an absolute purge of mana because that would obviously kill you. Like the purification spell it only targets outside mana to act as a more generic dispel effect. Weaving the two together should remove the existing spell effects, turning it into unshapen mana for long enough that the purification steals the unshapen mana and uses it to re-configure the body back into its proper shape.

Ren needed to test it though. They are on a limited timer since Telah's transformation snowballs. If this doesn't work, she needs to go back to the drawing board and come up with something else... but that means the only way she can test if it works is to use one of the potions on herself. She waved her hand around in front of the vials, realizing only just now that Telah did not actually label any of them, not thinking anyone other than herself would be trying to use them. They all look the same. Wait- two are missing, those are the two that spilled and she said those were the most powerful. Ren immediately took the far right potion on the lower rack- opposite of the missing potions in the left of the upper rack. If that was the most powerful, then this must be the least powerful version.

She drank the potion- since it was not diluted with coffee the effects hit Ren immediately. Nothing changed visibly but her entire body felt an odd, pleasurable tingle. A buzzing, like she could feel her cells shuffling around, becoming more active. She started to feel a pressure in her ears, starting to stretch into a more elven shape. Ren quickly activated her custom purge spell and watched the runes light up in a shockwave out from where her hand touched- since the runic array is drawn so large. The pressure in her ears vanished and the tingling went away!

Ren paced around for a few minutes, chewing her lip nervously but no new feelings took her. She did it! Spell averted! "Wooo, I am SO glad I won that gamble. I do NOT want what she is having, heh."

Oh- right, she could go tell them! She called Marcus but his phone just kept ringing. Ren walked outside the barn and lowered her brows as she could hear his phone ringing from the second house. In his haste- he didn't take it with him. If she hurries she might be able to cut them off before they spend money on materials they no longer need. Ren hustled to her car and sped off with the pile of rune papers on the passenger seat. The cure was on the way!

She glanced at the gas however and noticed it was almost empty. Again?! Ugh. Marcus sometimes swipes her car instead of his truck because her vehicle is cheaper to fuel. That is fine- there is a gas station down the road before you get into town anyway. Ren told them to fill it up and tossed the money to the guy at the counter on her way to the bathroom around the side of the building for a quick pit stop. The guy at the counter today was kinda cute, and he smiled at her.

As Ren wandered around to the bathrooms her head got a little foggy. Wonder what his dick looks like under those clothes? How much of a stallion is HE? Oooh, and that got her thinking... just how big IS Telah's dick? What does it... feel like to have it swinging around between her legs? It must be so heavy and cumbersome. So... meaty.

She got in the bathroom and leaned heavily on the counter, looking into the mirror. Why is she so... horny? Geeze, settle down girl, all the excitement of inventing the cure is... mmm. She reaches into her pants to press a hand over her crotch a moment, just feeling how hot it became already, but then as she went to remove her hand she brushed her clit unintentionally, causing her hip to move back reflexively.

She yelped in surprise from the feeling, why is her clit so big?! She prodded around it moaning at how sensitive it is, then gently grasped the sides through the hood and stroked it a bit, rolling her hips forward and back, gently thrusting without even thinking about it. Her head felt feverish, her thoughts melted into lust almost immediately. Her ears blushed and then started to stretch. Her toes felt uncomfortable a moment like something was pressing on them even though she was wearing sandals and her toes are just out in the open. She glanced down just in time to see them four times as thick as they should be, and almost completely black! The pressure she felt was the nails shoving the skin around them aside to make more room!

Almost as soon as she looked down however- her feet started to rapidly crunch and click, stretching and deforming, causing her to stagger backwards, across the bathroom and slam her back against an empty stall door to finally regain some balance! Her feet remained where they were but her back started to slide up the door behind her! Her legs are getting bigger! They are also shifting proportion- her shins are getting shorter but her feet are getting longer. The bones in her feet become larger and start to fuse together from lack of room, transforming into a cannon bone. Grey-brown hairs started to sprout from the knuckles on her toes quickly, then the back of her feet.

Her toenails became so monstrously huge they fused together, and the more complete their merge became the tighter it dragged her toes together, till the fusion of her foot bones caught up from behind. The two merge-points met on either end of her digits, finally forcing them all together into a giant, bulky, singular toe. The giant unified toenail now a U shaped hoof... equine legs. The fur wrapped around over what had formerly been the soles of her feet, then up past her ankles, then her calves tightened with muscle as the fur passed them too. Then her thighs ballooned in size!

Ren had not taken her hand out from under her skirt and panties, gently rubbing herself as if in consolation of what else is happening to her, not realizing that is what is causing it in the first place. Her clit swelled to the size of a marble, popping out of its hood, then to the size of a ping-pong ball! Her labia inflated like a balloon, the soft crinkles in the skin pulling smoother as it projected out from her crotch. She gasped several times in a row from the bizarre feeling of her vaginal passage yawning open! The muscle ribs increased in size allowing it to close tightly still, but the passage became many times larger, causing her guts to gurgle as her organs shuffled around to make space.

A nub nudges her skirt down to escape as it gets longer and longer, a narrow ropy tail snaking its way out behind her as Ren bows forward moaning loudly. Her ears twitch- now several inches long and narrow, but still growing! A light layer of fur is already forming on the back of them too! Her pubes have converted to fur as well! Her legs tingle as her genitals become too big for the rest of her, squeezing against the inside of her pelvis temporarily cutting off circulation to her legs! Her clit scrunches up against the hood when it relaxes then aggressively shoves forward again when it clenches automatically. As big as a golf ball now!! A massive, vaguely heart-shaped knot of pleasure nerves!

In a crack loud enough to echo off the bathroom walls- her hips exploded in size, her actual pelvis expanding out so her genitals once again fit. Her enormously fat labia now darkening from magenta to a bruised coloration from blood pressure, but then still darker to a grey-purple, and then actual black! The color started to spread up her crotch too on her underside, and over her taint. Her anus clenching and swelling in short, rapid flexes like the other two- quickly turning equine. Her tail grew a tassel, flicking rigid for a moment from the sensation!

Fur spread up her thighs as they got even bigger! The muscles in her ass swelled enormously now, making her butt huge, round, and taut! Her skirt was already pushed down by her tail so when her ass started expanding- the skirt was caught across the inflating ass cheeks, unable to squirm down or up before the cheeks gripped them, and bent the hooks that close the skirt, causing the clasp to break and the skirt flicked off of her! Her panties were now wedged into her ass like dental floss and squeezed into the back of her hand so hard she could not pull it away from her pussy if she tried.

The fur now spread up over her ass- and started to grow below the tassel of her tail as well, racing down her tail length to meet the other expanding patches. The fur around her crotch swallowed the area to her inner thighs before it met the fur coming up her legs. Two bumps stiffened on the black flesh that expanded from her pussy, and radiated an almost itchy pleasure. Then a gentle, warm pressure behind them as a pair of udders slowly stretched the taut skin over them!

Her enormously projected pussy now taking an elongated teardrop shape- her hips finished shifting which forced her to abruptly bend forward- no longer able to hold a proper bipedal posture! This was the last straw for her panties- snapping them on either side to fall away in the middle, exposing her giant, dripping wet ebon twat. Her clit sunk into her, vanishing for a moment before erupting back out, winking like a jenny in heat! The golfball sized knot of pleasure is so large that when it exposes itself; it also partially parts the glossy black labia, exposing the still neon pink interior, and releasing pent up lube to splash onto the floor under her.

Everything was happening so fast, Ren's mind was reeling! Too many changes, too fast. Can't concentrate on any one of them long enough to form a cohesive thought. The only consistent thought in her head is how fucking wet her cunt is! How HUGE it is! How empty and hungry it feels! She NEEDS someone in it! Someone HUGE. She wants to sit on a fucking fire hydrant! Something gargantuan to stretch her around it like a human condom!

"Hah...haaah-orn...y. S-so... why so...ah! N-need to stop ch-change annnngh faaWWK, need to... to cum-mm-mmAWW!" Her voice starting to sound hoarse.

Ren could barely hear the devolution of her voice over the throbbing of her heart beat in her giant ears- now almost two feet long, she is adorned with the ears of a donkey! Her hair starts to stand on end slightly, lifting up as it becomes coarse and rigid while the hairline starts to prickle against her skin and advance down her neck in a narrow lines- forming the mane of an ass. Fur starts to spread down from her hairline in the front, consuming her forehead, erasing her eyebrows and then advancing down the bridge of her nose.

"Huh-AWWWh?" She crosses her eyes trying to look at her own nose just as her vision vibrates as her nose lets off a loud, hollow *thunk* and expands!

The bridge doesn't project any further out, but it doubled its width almost instantly, which caused her nostrils to flare so wide that it increased the overall size of the bottom of her nose! She felt congested because her nasal passages were trying to grow bigger than she could currently fit in her face. Then a faint but persistent ache in her jaw, as her mouth lulled open in confusion you could hear the enamel of her teeth groaning as it stretched- her teeth enlarging into huge herbivorous blocks.

Her back was straining at her current bowed-over posture, but she could not straighten it any more than this for more than a couple of seconds without losing her balance and slamming her back against the door again. Ren looked down her front, feeling breasts but far lower than they should be as she was trying to ravenously paw at her fat dripping pussy. She seen several things that alarmed her all at once. Her breasts were only B cups to begin with but now looked utterly flat- only her now colorless nipples remained to mark where they had been! In their place were instead two udders wobbling around on her upper crotch that already looked in the C cup range and still growing, embarrassingly enough making her better endowed as an animal than she was as a human.

The most alarming change however is her pitch black fingernails shaped rectangles, expanding out from the ends of her fingers! Ren wobbled- losing her balance in an attempt to bring her hands up to look at and fell onto all fours. Her vertebrae from the bottom up all expanded, projecting out of her back for a moment in rapid-fire, before her muscle swelled in size to once again hide the bony protrusions. Well- she is locked on all fours now.

Fur started to grow on the backs of her fingers, then the back of her hands. Ren dumbly attempted to stand back up still, not realizing entirely what was happening to her in her horny daze. Fur started to grow up her torso- following her spine at first before spreading further out to the sides. Her hands are so stiff and clumsy- the bones deforming and not sitting correctly. Every attempted movement causes one of the joints to click or pop. Slowly her hands stiffen and close against her will. Closing her hands causes her to rise higher, lifting her palms off the floor to shift the weight onto her fingers instead, and as they close and purse together the weight shifts further toward their tips!

"Nuh-naaAWW, not hands! N-nhEEE-AWWW- nn-neeEEEd hands. Pussy! Nee-nnnngh, HAWWW!" In the swirling tornado of lust her thoughts are in- she was alarmed by her hands devolving only because she could not paw at her pussy with hooves.

Hands getting longer and longer, becoming less defined as they too fused into cannon bones. Nails fused into hooves to better brace her weight, and then her fingers all became one huge digit. The fur started to grow up her arms as the muscles in them grew taut as well- though did not bulk up like her rear legs had. Her udders seemed to cap out around an E cup size for either segment. Nipples wide like rounded cones, enormous for an equine.

Her last attempts to talk as her hands devolved left her breathless- her nostrils flare as she takes a deep breath and her lungs expand tremendously, shoving against the inside of her rib cage! Her heart gave a mighty throb that felt like someone drumming against the inside of her ribs before the ribs started to crack in rapid-fire from the middle out to the top and bottom! The skin stretched so taut her nipples were erased from her chest, and replaced with a growing patch of fur squarely in the middle, that spread to consume her underside and meet the growing trail from her crotch that moved around her udders. Her thin, stretchy, pink long sleeve shirt exploded like an elastic band stretched too far- though the arms remained clinging to her, trailing the scraps of the shirt's body. In her transformed state the formerly full sleeves onto cover her upper limbs.

Ren attempted to voice her frustrations again but only brayed like a donkey. She confused herself- because that is not what she meant to say, she did not even know what that sound is supposed to mean. So she spoke again trying to correct herself, only getting more confused. Then she brayed because she was confused because she had brayed. With every outburst, her human thoughts become prepressed and her pupils wobble- stretching oblong before wobbling back into a circle, but each time a less perfect circle than the last.

She raises her head and her neck cracks at several points before a pressure fires up into it and it starts to click and pop on its own, rapidly growing larger! The muscles swell the rest of her neck, expanding the base to support her head as her collar bone was no longer suited for the task. Quadrupeds do not really have collar bones; they don't need the support because they don't walk upright.

At the same time as her neck; Ren's head filled with blood pressure causing her vision to blur a moment. She starts braying even more in confused distress, and her pupils deform worse and worse, till they are shaped like rounded rectangles! Her irises expand to hide the whites of her eyes, making her eye color appear darker than it actually is. Her teeth were getting absolutely huge now, forcing her face to push further forward, her jaws growing longer and longer! Her long ears pull back in distress and she unintentionally starts to give herself a headache from not un-crossing her eyes in an attempt to see what is happening

Her nostrils flare and her nose gets wider, the fur already up her neck and on the top and middle of her face starts to consume the rest, her lips turn black. Technically all her skin turned black- but it turns as the fur covers it, so you can only actually tell in places where fur won't grow. Ren's entire head enlarges, making it seem disproportionate to her body; one of the more obvious differences between an ass and a horse. The further forward her face grows, the further up her forehead is shoved. Her enlarged nose gets angled further up which pushes the forehead back, which compresses the part of the skull her brain is housed in, making her brain physically smaller! With a rather savage sounding crunch, her mind is scrambled and repressed as her face finishes its growth.

While Ren's thoughts were still technically in there- her simplified brain did not have the complexity to process them, so only the animal thoughts could actually be completed. She slammed her big butt into one of the stall doors so hard she broke the hinges, grunting in frustration. Slamming her butt into the pipes under one of the sinks under the counter, trying to wedge the pipe between her cheeks to rub her sopping pussy into it but she broke that too- braying loudly in surprise from the cold water that came blasting out.

*Penetrate! Need. Breed Ren! Breed, breed, fill! Streeeeetch! Nothing here. No. Come on, something..!*

She turned around several times frantically looking for something she can slam inside of herself. A man knocked loudly on the door. "Hey, what is going on in there?"

Even from inside the store you could hear Ren braying as her mind melted and her transformation completed, which obviously made people confused. Why can they hear a donkey here? Did someone's ass escape one of the nearby ranches? But how would it end up in a bathroom?

*MALE. NEED.*

She rammed the door, knocking it open as the man was starting to turn the knob to see what was happening, since he heard no human reply. Ren knocked him to the side of the parking lot and immediately walked over him, nudging her large nostrils right up to the crotch of his pants.

*Maaaaaaaale.*

"Woah, woah, woah.... hey, whatcha doing there girl? Where is your owner..?"

Ren's ears flicked forward listening to him, and recognized the sounds he made but could not currently understand them. She recognizes this language, but cannot remember what it means or why she knows it. She grabbed up the waist of his pants with her huge teeth- picking his entire hips up off the ground by it and then shook her head, wiggling his butt while she pulled back and yanked them down, dropping his bare ass to the pavement! He quickly cupped his junk in fear but Ren resumed nudging at it- trying to push the hands away to get at the penis. The man doesn't want to do anything that might spook or irritate her, so he cannot shoo her away because he is afraid she will just bite off his dick. Her teeth may be flat but the edges are still sharp.

Ren moves forward, bringing her face to his, blowing his hair back a moment with a gust of hot air from her huge nostrils. She stepped lightly onto his arms with her fore hooves, pinning them to his sides and exposing his dick. What is that, six inches? Yikes, might as well be a pencil compared to her pussy. Her clit alone is basically the size of his balls. That did not stop her from trying- anything she can fit in there at this point; she will.

Every time Ren slams her butt down on him her overly fat udders slap his stomach and wobble around violently before she lifts them to slam down again! She angles her hips back to pull his penis down as far as it can go while erect- catching her clit on the crook between shaft and crotch to get herself off. Her tail flicked around wildly behind herself as she bounced on the man, causing his legs to tingle from the force of impact of the huge donkey butt slamming into his crotch. Luckily Ren is so horny that it did not take a lot to spike her pleasure high enough to fire her over the edge.

Ren's ears fold back and she brays so loudly the man's ears ring. Her pussy grips his cock, rippling inward like it's sucking him off, sending him into an unintentional orgasm of his own. Her pussy juice washed over his balls in bursts as her body shudders.

Her hooves make a shrill splintering sound before they crack apart into five sections! She seems to collapse forward as her arms return to a human shape, the sudden movement caused her fur to lift off of her and dissipate into the air like smoke! She made an oddly human sounding cry as she tilts her head back and her face collapses back into a human one, then her neck scrunches up, bloating freakishly wide for a moment before its overall size shrank back human! Her mane falls out, her back hooves to feet, her back legs wither to her unathletic human proportions, her tassel falls out and her tail shrinks away. Her pussy REALLY puts the death-grip on the man's cock as it was slowly softening, shrinking down to normal human proportions before her clit became too small and subdued to shove aside its own hoodie and vanished under the protective skin. Fat udders tighten and regress, restoring her petite human breasts.

Ren looked dazed a moment before looking at the man confused, then looking around frantically and shoved the man down hard as she got up off him. "What the hell are you doing on me, you creep!?!" In a fluster Ren tried to cover herself the best she could with her hands and ran away, leaving the man unbelievably confused still laying on the lot.

"What... the he-hawing-heck just happened?"

Marcus meanwhile had finally got the sheet crystal he needed and drove back to the Arcanum to pick up Telah. He slowed down at the front but could not see her, so he took the truck to the lot at the side and walked into the Arcanum. Since he has no formal magical training the security will not let him into the archive itself, so he asked them if Telah had left already and they told him she had- in a hurry too. Oh great. She left in a rush, and isn't out front waiting like she is supposed to be? She must have started to transform again. But then where did she go?

Marcus wandered to the parking lot and darted down the length, looking between vehicles to see if she was maybe hiding among them but no. He looked around as he returned to the front of the building. Where would she be? She couldn't have gone far, right? Tall apartment buildings, coffee shops, town hall... she wouldn't have gone into any of these buildings.

"Psssst~ Marc!!" He seen her wave her arm out at him- between the Arcanum and an older brick apartment building.

He darted between the buildings and seen her backing up deeper in the narrow laneway so no one else seen her, but staggering a bit because her legs did not sit right! Telah's feet elongated drastically bursting the ends of her shoes open! Should have worn sandals again. The cloth body and rubber bottoms of her shoes tore apart revealing the fronts of her toes which looked like a horse hoof- but was not quite far enough along. The hoof was five segments pressed together, so she still had five toes she could move individually. Halfway to a cannon bone though- the soles of her feet were now awkwardly long and did not like her putting her weight on them.

A little naked proto-tail overlaps the skirt in the back, and Telah is shoving the fabric of her skirt down on either side of her cock- but the dong is stronger than both her arms and still juts straight forward. Fully equine in shape- dark chocolate brown up to the medial ring then dappled into neon pink. The bumpy corona taking a pale violet tone from pressure- the glans glossy smooth from internal pressure and well defined, almost looking like four domes rather than one. The projected urethra drools out of the deep divot in the middle of the four slopes. The length of her skirt only barely covers the cock past the medial ring- the rest is exposed, pointing intimidatingly right at Marcus.

Taking him a bit by surprise though- her breasts look larger and there are two obvious wet spots on the front of her shirt! Her midriff is exposed- not because the shirt isn't long enough but because her breasts stole all the fabric and are holding it so far out from her that at even a slightly upward angle; you'd be able to see their entire undersides. Her ears are looking elven too, starting to deform.

"Neeheiheihei-d to... cum! I... take my mana... hurry!"

His own enlarged cock engorged, trapped in a U shape in his underpants, bulging out the front tremendously. "Here?! I have the truck, we can..."

"I... ngh_!" She wobbled forward, almost falling over as her legs let out a dull pop and the bones enlarge, making her taller. "It is too strong right n-now hah-heiheihei~!"

Marcus groaned and darted up to her, putting his hand over the head of her cock- and it was completely filled. Actually touching it he realized just how large it is. Her skirt is long enough to cover to her knees... if it only covers just past her medial ring that means her dick is as long as her legs are- and her legs have enlarged. The head alone is too big to fit in his hands, he cannot hook his fingers around the corona. There is no way that can fit into his ass- she would split him in half. But she needs to offload her mana, so he has to take it somehow.

The two of them manage to get her to stagger past some BFI bins to break line of sight to the street. She managed to get herself into a sitting position- back against the metal bin so she did not fall over because of her malformed feet. Now her dick stuck straight up, exposing her balls that looked almost as large as soccer balls!! That is a LOT bigger than even a full sized horse. Even her scrotum had almost finger-thick veins webbing its surface. There isn't enough loose skin for her prostate-balls to roll around so they both just make sort, lazy jerks upwards when they clench. She managed to loosely stuff her junk into panties when she left the house but they were nowhere to be seen now- her balls already tore them off before Marcus found her.

Marcus unzipped his fly and his underpants immediately sprang out in a tight tent as his abnormally large dick. With a flick he freed it and used his semi-equine balls to weigh his pants and underpants down as he pressed his shaft into hers. While standing and Telah sitting- their glans were on equal level. The base of his shaft wasn't even quite low enough to reach her medial ring, so he was barely covering half her cock. He could clearly feel her heart beat inside the giant dick against his own shaft. He thrust into hers, rubbing the bulbous urethral bulges together, but trying to hold the two dicks together with his hands did not work- his fingers cannot open wide enough to even loosely hold both. It would take both hands to fully encompass just her shaft alone!

Now Marcus was worked up and wanting pleasure, and Telah was so deliriously horny all she could do was whimper desperately. He needed to get more cock, too much was untended, it would take too long to get her off like this. Marcus dropped his pants to his ankles entirely, held his shirt out and bent his legs- popping her glans out through his collar as he swung around it like a stripper pole for a moment before sitting on her lap! His balls pressed into her thick sheath, his cock wedged between him and hers, he places his hands on the lower shaft and one directly over the medial ring, held it close, and pressed his face against the underside of the flared glans and started to work the full shaft!

Telah started to groan and squirm a bit- hairs slowly growing out of her tail, but she is currently sitting on top of it so it feels extra prickly because the hairs are growing against the ground. Ears twitching, starting to become mobile! Taint inflates huge, balls gurgle and swell a little bit bigger still!

Her precum pooled in the divot around the urethra before dripping over and down the shaft, mixing with the pre Marcus was rubbing against it already from his own. Her veins yanked tight a moment, then Marcus' eyes widened as he felt the heat increase- radiating off the shaft! With his face up against it he could HEAR the tissue stretching! Like someone twisting leather! Her cock slowly started to grow even bigger! It was already as big as an actual horse! But that is the problem with her potion- it wasn't a horse transformation potion in the first place. It is meant to make an over-producing, over-endowed horse... and it was the strongest dose.

The shaft started to get as thick as his thighs! His fully opened hand could only wrap around a third of it! His dick is huge for a human and even it feels tiny against this monstrosity.

"Telah-!" Her cock started to buck so hard it nudged him backwards! Marcus wasn't holding it to himself- it was clenching into him hard enough to shove his entire body, squeezing his junk in the crook between the two.

"I... can't... he-heiheilp it! Haheiard to... human." Her voice deepened. "Eah-easy to... horse."

The dick shoved him so far back he had to use his hands to hold himself up against the ground on either side of Telah while her behemoth cock grinds itself against his. Marcus started to feel a pleasurable tingle radiating into his junk, a giddy, fluttery feeling. He gyrated his hips to thrust the dicks together faster as he seen his own penis getting darker and bigger. Loose skin started to form folds between cock and balls as a sheath started to form! Unlike Telah's transformation- the end of his foreskin inflated into a ring of muscle and the foreskin instead turned to the middle point of his decreasingly human phallus.

The tips of his toes curl in pleasure but also grow numb at the same time as his nails grow so large they overtake their ends entirely. His own shoes bulge, and his heels get shoved into the backs of the shoes as his feet attempt to lengthen. The forming hoof segments act as battering rams to wedge between the top and bottom and rip the fronts open like had happened to Telah already. She hasn't even come yet but she has already redirected the flow of mana to aim at Marcus, so any new mana being drawn in as a result of this encounter is going to him instead.

The sensation of change is half-muted by the fluttery, pleasant tingle of the mana working the changes in the first place. In limbs it sounds like it should be painful because of all the pops and snaps from their bones, but it is more like feeling a joint pop BACK into place than a joint popping OUT of place. A bit of a cramped feeling then *pop* and a sudden wave of relief. A satisfaction like a good stretch or scratching an itch- a powerful relief from a problem that didn't exist in the first place, in this case. In the case of their genitals- it is why Telah is launching toward orgasm rapidly already in spite of their struggles to cover all her cock. The stretching pulls all the nerves taut, amplifying everything they feel in addition to the expanding mass putting pressure on them as it grows out, creating a dull but radiant and persistent pleasure entirely on its own without needing to be touched at all. So FULL feeling and so heavy, feeling like it could pull too tight and start to ache but it never does. Like a balloon that is too full and about to burst, yet continues to inflate without popping. Her cock and balls keeps hitting its absolute limit, but because it's growing; the limit keeps going up at the same rate its hitting that limit.

Her cock went so rigid it felt like a solid, uninterrupted slab of hard rubber. Marcus knew she was about to blast, because her balls are so huge and strong at this point, that the force in which they clenched to her crotch actually lifted his legs that had been resting there! He quickly scrambled up into a squat over her head so he could even reach her dick and even then he needed to tilt it up because the head had grown past her own and was pressed into the side of the BFI till Marcus lifted it. The glans are bigger around than his entire face- the best he could do was kiss the urethral projection like it was a pair of lips, his own lips slipping around it inside of the depression around its base, the rest of the glans pressed into his face.

Telah surprised both of them, bucking on reflex when she came which slammed his head against the BFI, pinned between the bin and her cock, knocking his balance out from under him! She caught his hips, but brought him down to her face and immediately kissed that plump, muscular anus ring of his, causing his pleasure to spike too. Her urethra pulsed wide but her cock is so long the urethra was already trying to relax again when the cum was still travelling up the shaft, creating a rippling appearance up her cock.

The hot cumblast flew past his entire mouth and slammed into the back of his throat before it touched anything else, immediately filling it to the point where it either blocked his breathing passage or he swallows, quick. If he did not swallow before the second blast hits- it would explode out of his nose because it has nowhere else to go. The force of the heavy liquid pooling at the back made him swallow almost entirely on reflex. Her cum is so... creamy. Very consistent and very heavy- this is thanks to her balls being hybrid prostates, and also due to her being so over-full before blasting it out, causing it to be condensed. The gulps are so large he can feel it travel all the way down and start weighing his stomach.

His feet grew even bigger, sliding out of his ruptured shoes and with a high pitched grinding sound the growing segments of hoof united into a whole! He regained his footing on his new hooves and started to lean forward- even as her cock is still erupting it is shrinking in size. When she dumps into him Telah is able to partially revert her transformation. Leaning forward a bit gave her an even better angle on his puckered equine butt and poked her tongue in, putting a little pressure toward his swollen prostate, and then she bit him! With her tongue inside, she started nibbling lightly on his muscular pucker like it was a wad of gum!

When Telah was slowing down- Marcus started his own orgasm, his shaft bucking hard against the back of hers. One shrank, the other grew. Because she was still firing mana into him his orgasm drew it all into his cock, changing it more than anything else and quite quickly. Unlike Telah; his dick does not turn pink at the tip- a zebra's dong is pure black. A Zebra's entire body is pure black- the white only exists on its fur. The tingling became intense, like all of his cells suddenly had the zoomies and were running in circles bouncing off one another. The tingle of mana was so intense it felt like someone tickling his cock while the pleasure of orgasm surged deeper in.

Marcus won't get any of the custom spell effects, so hyper orgasms and genitals would never rub off on him because he is only getting his aspect second-hand. However, there is a reason Telah chose zebra to add to the mix. In particular- Gr?vy?s zebra. The biggest of the three breeds of zebra by a rather wide margin, and while zebra in general do not have as thick of a cock has a horse- it is LONGER than a horse's.

Growing as he cums makes it feel like he is cumming so hard that the cum streams are what is stretching his cock. Every sensation that was already in his dick is amplified because the clenches of orgasm are what is sponging up the mana which is in turn changing him! Veins throb thicker, projecting off the shaft obscenely before the rush of blood sponges up into the cartilaginous material of the body of the cock and it stiffens and expands outward like a flexing muscle and then sticks there at its new size till another surge of blood fires up into it.

At several points during his climax his balls doubled up- instead of relaxing for a moment and then pumping again they will go twice in a row; and swell fatter in size with the second burst. The magic literally cloning his existing cum to expand the load even as he is still trying to expel it! Soon his balls are the size of a softball each and from his anus, across his taint, ballsack and all the way to the tip of his dick is glossy, pure black skin. His crotch is dappled black to his base pale pink, with a few very faint spots around that as well- threatening to spread further. The patch of pubic hair over his cock is now an upside down V shape, and white fur rather than black hair. It seems his pubes have already reserved the area where his sheath will eventually fuse to his underside- but for now it is free-hanging with the rest of his dong.

Marcus's body stiffens and she shivers, falling onto all fours when his orgasm tapers off and the tingling intensifies in other areas instead- ears, neck, and hands at the same time! His hairline starts to advance down his neck but his hair turns white at the roots as well in patches. This particular breed of zebra has very narrow but also very numerous stripes. His ears become wide, upside-down teardrop shapes, being very large and round at the tops but still tapering at the base. Distressingly though- his hands start to rapidly change to hooves!

He tries to make a fist as if his muscles could resist the magic trying to change them, but that only enhanced the feeling of pressure as the muscles change shape and force the bones to click and crack out of place, merging together as they grow blocky and clumsy. Human hands have hundreds of tiny bones for fine motor skills- a zebra stands on his hands, so the fewer bones- the better. When his legs shift his shins regress in length to grow his feet out. When his hands shift his forearms remain the same length- because his arms are shorter than his legs as a human, but all of a zebra's limbs are equal.

By now both he and Telah are flaccid, and Marcus is simply laying on top of her, her huge breasts pressed into his back. His arms straighten without his input then curl back in toward him- the muscles flexing on their own, tightening and swelling, bulking up a bit. Fingers getting thicker and thicker, hoof segments on the ends fighting for space, pressed together making it hard to move individually. Hands longer, rounder, shape of the palm obscured as the bones all become one. All fingers and thumb bunch up to the very end on a single joint, then they fuse from the bottom up, then finally the seam between hoof segments disappears leaving him with forehooves. His tail is now coated in striped fur too, but the transformation seems to have stalled there. When erect his dick is long enough that the glans are over his own head- but right now it's all packed away nice and neatly into his new sheath.

He crawled off Telah, slowly standing up on two legs. "Great! I have no hands!"

"Well at least you don't have a telephone pole growing between your legs that drops your blood pressure so low that you're barely conscious."

Telah managed to regress her changes back to the point where she once again has feet- though her toes are still tipped with hoof segments that look like a horse hoof if she pushes them together. Her shoes are fucked though, so she just removes them and tosses them in the bin beside them. Cock is still huge but at least a level of huge that could technically be possible for a very large breed of horse. Her breasts don't seem to have been able to regress this time. Fingernails are a milky grey and freakishly thick, but still fingernail shaped. She has a horse tail but no hair on it- only the flesh and blood portion remained. Her voice was also restored to normal.

She took a step but stumbled and almost rolled her ankle, but Marcus caught her. "Woah... you okay?"

"Yeh-yea. Takes a bit for the blood circulation to go back to normal after... that monster drinks it all. Just... woozy is all."

"Aaaalright, let's get you back to the truck before anything else happens. I sure hope Ren has made some breakthroughs of her own while we were gone. I am going to be extra useless now that I have no hands..."

"Awww, that isn't true..." She leaned on him a bit, resting her chin on his shoulder and nuzzling his ear. "You're still a great mana dump~"

He just lowered his brows.

Stage III : Chronic Lust

Meanwhile back at the house, Ren skitters home finally buck naked on the far side of the field. She ran into the fields hoping the tall grass would help hide her nudity. When she turned feral her instincts took over and her brain physically shrank, preventing any human functionality at all. When she reverted to human she had no recollection of any of that happening- because the part of her brain that stores memories was repressed the whole time. So Ren has no idea why the hell she is naked or who that man was that she woke up on top of. She was so flustered she ran off without the car, then was too scared of being seen to go back for it when she remembered and just kept trying to dash home before someone seen the woman streaking out in the fields. Car was probably towed- the doors were locked but she left it at the pumps.

Ren only arrived back at the house and got dressed in a new outfit forty minutes before Telah and Marcus got back. She was just pacing around her house confused and not entirely sure what to do. She wanted to go tell them of the cure but then she blacked out and woke up naked and confused. Were there side-effects of the potion that still got through her purge spell? She is entirely human now though- she looked herself over in a mirror while she was still naked- 100% human.

She halted her pacing when she heard the crunch of the gravel under the truck driving up and darted to the front door as the others were parking between the two houses.

"Guys! Good news, I- oh." She seen Marcus's now big ears first, then as he stepped out from behind the truck; the large bulge in his pants and his ruptured shoes. Telah's skirt obscured the shape of her junk but since her nuts are the size of soccer balls each- it did still look like she was trying to smuggle a pumpkin under there. "Huh.."

Marcus cocked a brow at her vacant stare, walking up to her and snapping his fingers. "Hey- anybody home?"

"Ah! Sorry, it is just... wow. Still transforming huh? I mean- of course you are, but- but- er, the cure! Oh, while you were gone I did some research on clerical magics and purification spells because I knew that wasn't a school of magic Telah had any proficiency in, and I made a cure!" She blushed brightly. "But... something bizarre happened today too... and I might have lost the car."

"You WHAT? How does inventing a magical cure make the car disappear?"

"W-well no, it is just... I went to go tell you guys but had this really weird episode where I kinda blacked out... and woke up naked. And then ran home. Naked."

"What... the... fuck... a-"

Telah butt in, her brow hardened. "You tried a potion on your own?"

"Y-yea. Well I had to, to know if it worked or not. And I know we are on a time limit so I didn't want to wait till you got back to test it, because if it didn't work I would ha-"

Telah took her by the shoulder and started to push her back toward her own house. "Wait, I am going to need you to recount exactly what happened, in detail."

The fact that Ren chugged a potion and came out perfectly human is definitely promising- however Telah had some serious doubts that it could have fully worked. The invading processes mimic equine genes- which means a purification spell won't recognize them as invaders, they think it's a horse and leave it alone. The enhancements, hyper size, explosive orgasms, custom biology- those will be purged. But the base animal? Not likely.

They all gathered into the house, Marcus grabbed some water to finally wash the taste of cum in his mouth. Not that it tasted bad... it's just, not a taste he particularly wants in his mouth. Ren sat backwards in one the chairs and Telah just leaned on the kitchen wall.

Every few seconds Ren kept glancing down at the bulge, and the wet spots on her shirt. Her breasts are so big that if the shirt popped off- she wouldn't likely be able to get it back on, it's only on because it was already on when they grew.

"Okay, well I took the potion on the bottom rack, right side. I used a clerical purification spell as the primary set but created an interwoven... uhm.. I created..." She paused for a moment, looking spaced out at Telah's bulge.

"Uhm... yes?"

"Huh? O-oh, I was just. Uhm, where did I leave off? Oh, right, I interlaced the effects of a mana purge in procession so reject excess effects to prevent the, uh, the spell...things from... w-what... does it feel like?"

"Huh? What, my transformation?"

Marcus spoke up, still chugging from a huge bottle of water. "Tingly. The flow of energy is tingly. Not like, foot-waking-up pins-and-needles sort of tingly though."

"N-no, I mean that c-cAWWk!" Her sudden outburst surprised even her for a moment, sounding quite hoarse.

Telah cocked a brow. "Uuuuh, you feeling okay Ren?"

"Yea, I just... it must be so h-heavy and mmmmmeaty~ hot an-ahn... throbbing."

There was a deep almost gurgling rumble in her body as Ren bows forward a moment, closing her eyes at an odd sensation. Her body then rapidly starts to crack and pop and when she opens her eyes- her pupils were already stretching sideways! Her entire body started to change all at once, back into a donkey jenny! Udders ballooned in size so quickly they got stuck in the gap of the back of the chair under the back rest but above the seat! Her feet were forced forward as her hips widened but their joints locked into quadrupedal configuration! No shoes on to destroy luckily, but her socks pulled off her ankles as her feet lengthened and the bottoms bulged out as hooves formed in them!

Ropy tail flicks out of her pants and then more and more of her bulging ass! The legs of the chair groan with her rapidly increasing weight and she tries to get out of it but her udders are stuck! Torso gets longer, thicker, now the back of the chair creaks too. Arms and then hands deform. She is growing a pelt from several different places at once- every part that transforms gains a patch of fur, spreading across her body in several directions. A mane, a huge neck. Marcus stood up on the other side of the table not sure what to do. Telah was also just sort of stunlocked. The transformation is extremely rapid compared to theirs.

The legs of the chair explode out from under it, then the force of it hitting down forces Ren up which causes her udders to rip the back of the chair off too. Her ass growing managed to push her pants down far enough that they simply fell off as she transformed but her shirt was once again caught across her expanding body. Her neck growing ripped it severely, and it was stretched so tight that when she tried to get up after the destruction of the chair; it ripped in several places and flew off her like the skin of a popped balloon. She brayed in irritation at the impact but scrambled onto four hooves quickly.

Her head bobbed a few times before she started braying constantly- going from sounding like a woman doing a bad donkey impersonation to a woman doing a good donkey impersonation, to a donkey doing a bad human impersonation and finally the loud and hoarse bray of an actual ass. Her face cracking and snapping as it gets longer and her entire skull enlarges by several times all the while, forcing the voice shift and creating quite a symphony of noises. She went from normal woman to a full feral jenny in about a minute.

Telah's equine member was waking up from the sight- particularly the huge ebon udders. She quickly grabbed her skirt to try and bend it back down; slow the blood flow into it. Ren was practically drooling from both ends and scrambled across the floor to get to Telah and that beautiful monster between her legs! Telah quickly grabbed a chair and used it to hold Ren off.

"Marc!!"

"W-what do you want me to do? I don't even have hands, I just had to drink a bottle of water by holding it in my teeth and whipping my head back for crying out loud! I choked like three times!"

"Well going by the trail of lube connecting her twat to the floor- I am pretty sure she is trying to mount me and we all know what happens if she does that. You need to... take... care of her."

"Ex-fucking-scuse me, are you suggesting I bang my SISTER??"

Telah was struggling to keep the jenny off- Ren doesn't even regard the chair holding her off, she is ONLY looking at Telah and ravenously attempting to leap over or through the chair, slowly sliding Telah across the tile floor from the force of the large feral.

"W-well she isn't going to turn back to normal unless someone does it, and I can't do it without turning worse, which will force me to turn you worse."

"Literally no shot in hell."

"B-uh... okay, maybe the wall is sturdy enough?"

"Huh?"

Creating several runes in her hand, Telah slaps them against the wall and as she pulls her hand away the wall follows it, dragging out and gradually taking the form of a horse dick the further out she pulls it. Ren spots the dick, glancing at it and then Telah. She still wants Telah more, but she keeps getting shoved back- there is nothing stopping her from taking the wall dick. She nuzzles it. Wall dick no smell? Weird dick. Big dick. Ren like big. She turns around and rams herself down the shaft so fast her giant ass cheeks leave a crater in the wall on either side of it. Marcus averts his eyes with a groan, hearing Telah tell him to follow as she darts out of the house and does as quick as he can to distance himself from his sister.

Once on the front patio, Marcus slams the door shut behind them and then leans on it in case Ren attempts to follow. "What... the fuck."

"Yea, I don't actually know because I haven't seen the runes she used, I can only venture an educated guess."

There was a loud, long bray that suddenly cracked halfway in! The pitch fired straight up and suddenly it sounded like a woman again. The moment the ass hit climax on the massive wall dong it reverted to a nude Ren and collapsed forward onto the floor. She sat there on all fours panting and gawking at the tiles of the floor in utter confusion. Once again- no recollection of what just happened or why the wall now has a dick.

Telah motioned toward the house with an index once the voice abruptly shifted. "She is only an ass when she is horny."

"So she is a were donkey?? Why does she have a different effect than us?!"

"Us? You have a different effect than me too- none of us are the same. Her purge spell is removing alterations to her system, but if she gets horny her mindset matches that of the invading equine genes and her spell is temporarily confused as to which one she is supposed to be. Because it doesn't actually remove those invading genes, because it doesn't recognize them as an invader."

"So... she is like Schrodinger's cat. She is a donkey and not a donkey at the same time. Her cells are both and her arousal is the tiebreaker."

"Yup. Problem there is that arousal is part of my modification so every time she switches it is going to be easier to turn her on, and thus she is going to turn into a donkey more and more often."

"Why am I naked AGAIN?!" They could hear Ren shout through the door before scrambling upstairs to find clothing.

"It would also appear that she is unable to think while she is a donkey- she can't remember being one."

"So... what are we going to do?"

"Grab her books and bring them to the house, I will go work in my lab. Don't let her see me or she will turn feral. As her brother- you aren't as likely to unintentionally turn her on. Let's hope one of us finds a REAL cure soon before we are the livestock instead of the ranchers."

Also so they continued to work on a cure- but in two separate places. Marcus had to explain to his sister why she keeps blacking out. Ren did not want to believe him at first but in the absence of any other explanation it had to be true. Telah worked on a potion cure in the barn lab, Ren working on a spell cure in her house, and Marcus was just cooped up in his own house watching TV. He didn't know shit about magic- and being around either woman with a three foot long zebra dong between his legs could potentially set them off. He wanted to at least check in on Telah but stayed away just in case- she said she would call him if she really needed his... services.

Telah would always like him fondling her giant member, but had to wait. Wait till it is bad enough that she absolutely needs it. Because if he turns full feral then she cannot dump into him anymore. But the longer she waits, the faster the changes come, so it is a risky game.

Her giant cock thudded against the table as she did her research as if trying to call her attention to it, but she did her best to ignore it. Giant boner isn't a problem on its own. By nightfall though she could feel hairs tickling her butt, looking back to see the little naked tail starting to grow its hair back and hooked her finger under it to fully pop it out over her skirt again so it didn't wedge the hair into her butt crack. Concentrate, don't let the tail distract you.

Adjusts her wet shirt later on and does a double-take. Areola are now so wide they cover over half her giant boobs! Er, not quite. She doesn't technically have areola anymore- it is just the coloration that is spreading, consuming her breasts entirely, turning them ultra-dark brown. Her nipples now look just like Ren's teats when she turns feral- large, wide, rounded cones. Forced erect at all times because of all the milk backed up into them. Her sopping shirt drips milk into the floor under her constantly but she is afraid trying to milk herself will only encourage it... and probably turn herself on. The fluid production portion of her potion will keep increasing her milk production.

Keeps assembling the runes on the crystal sheets well into the night. Can't sleep- don't have the luxury of the time. Full formed tail swishing behind herself now. Telah groans and tries to adjust herself in her seat, but her hooves scrap on the floor! She looks down at them in surprise- only just now noticing her feet have fully devolved into hooves so her legs are a bit too long for the chair, she cannot draw them in at all without standing up out of it. Sitting in the chair for so many hours was making her ass numb though, so she had to awkwardly lift herself out of the chair by the arms first before she could get her hooves properly under herself and stand- but that didn't work either.

All the potion bottles rattle as she shakes the table and then sits fully again in fear of accidentally knocking more over. She had become so used to ignoring her erection she forgot it's under the table and she almost flipped the table over with it when she tried to stand. Telah scoot the wheeled chair back from the table to slide her dick out, then a bit more... then a bit more. Her cock finally flips out and immediately stands out from her at a diagonal angle! That was more dick than she was expecting. So thick it requires two hands to encompass the shaft, the glans flare wider than her face. It is just a shade smaller than it was before she blew into Marcus last time. Sigh, already used up the time that bought her.

Her equine ears flick to the side as she hears a donkey bray and stagger around the bedroom of the main house!

"F-fahk- fAWWWWk! Picture s-aaww hee-awt! So heee-ornHEEEAWW!" You could hear her voice fluctuate between woman and donkey as the brays burst out of her beyond her control and devolve her further.

Pictures? Oh, geeze. The diagrams in the magic tome- there was probably illustrations of the animals by their respective spells. She got horny from looking at the picture of a donkey. That is only going to get worse... next time she might transform from THINKING of a donkey. She was really crashing around in there- probably trying to grind her cunt into everything and destroying all the furniture because nothing can support her. Yea- the wall dick is still there, but how long is it going to take a dumbass... ass, to remember, and find her way down?

On hearing her brays, Telah's cock throbs. The drum of powerful heart beats on the inside of the finger-thick veins on its surface. The head purples, swells, becomes glossy smooth before the urethra also pulses and an orb of pre forms on the head. Aaah, ignore it, just ignore...ooh. Telah's eyes widen when she feels her balls brush the legs of the chair! Growing even bigger! With an audible gurgle they hop and pat the bottom of the chair and an explosion of pleasant tingles fires up her shaft- another inch of flesh forming and peeling out from inside the sheath as it gets still longer. AAAH, DON'T IGNORE IT. Get rid of it before it turns the rest!!

At least the transformation also increases her sensitivity and makes her hornier every time- which also means it is easier and easier to get off. Because at this point not only does her dick not fit into any holes- it is taller than she is so her mouth can't even reach the head anyway.

Her tail raises instinctually, even though there is no one here to mount her. Her balls lift again and she crosses her hooves- preventing them from sinking all the way back down. Telah ignores the shaft entirely and grabs her nuts! Half prostate- they feel good to squeeeeeze. They even feel good in her HANDS to squeeze! So hot, the scrotum so smooth and pliable, then the round taut surface inside of the ball itself, the wrist-thick tubes running down into them. They are like stiff rubber to the touch, under all the soft outer skin. Every time she squeezes them a powerful throb of pleasure fires up into her, weakening her grip and forcing her to let go after a second- too intense to hold it for long. She is bent over to hold them so her boobs rub milk onto her shaft through the sopping shirt as the shaft bucks against her. Her nostrils flare at the scent of cock, then grow a bit, widening the entire end of her nose a little! Her lips start to darken; red, blood red, red-brown, dark brown, near-black. The dappling around the base of her genitals starts to spread. Her inner thighs, then outer, her belly then her butt. First the skin looks lightly bruised, then it deepens to brown, then ultra-dark brown. Fur starts to grow around the base of her sheath, and her hooves very slowly creeping up her legs. It is the same base brown as her hair.

Telah thrusts her breasts against the shaft, timing it with when it bucks back against her. Her urethral bulge throbs almost more frequently than the shaft itself, burbling out an almost constant stream of pre. Her balls now the size of a medium sized pumpkin each and lightly resting on the floor under the chair, even though the chair seat is currently as high as it can go, and the scrotum is barely big enough to let them move, so it doesn't really hang at all.

Between her tits stretching the shirt to its limits and the milk saturating it and weakening the material further with moisture- her giant cock bucking against it finally caused the shirt to rip straight through the middle to the collar and bottom, exploding the entire front of the shirt open! Her bare tits wobbles violently from the force of being freed before settling on either side of the shaft, making her thrust uncontrollably. Aaah, they feel so good on it. So, so soft against something so, fucking, hard. The dark skin color spread further over them, approaching her actual chest, covering her boobs entirely, making them look even more udder-like! They start to feel so... tight! They fatten up a bit, then milk beads on the teats before they erupt like five thin streams each, in random directions!

Telah lets her balls go and grabs her tits instead- immediately letting out a stuttered, desperate sounding moan from the shock of pleasure. The hair-thick streams turned to full streams of milk arching off her from the pressure of her grabbing them! And grabbing them also pushed them against the shaft harder. That was it for her- her balls slammed into the bottom of the chair then flipped up over the edge and landed in her lap so hard the chair wheeled itself even further back.

Telah let out a cry that was unintentionally similar to a horse whiney as she erupted cum so hard the shots fired four feet in the air before arching back down and making a loud thud against the wood floor. Her breasts and cock absolutely soaking the floor in a lake of white- and the floor was already glistening to begin with thanks to all the pre she spilled getting to this point.

Uuugh. No time to even clean up. Musk of cum is so thick the air feels heavy, but have to just power through it. No time, need the cure fast. The moment she put a hoof down to drag herself forward in the wheeled chair her vision spun and she almost thought she was going to black out right then and there. Telah did not even realize how light-headed she had been while masturbating till she tried to move almost immediately after her orgasm. Her breasts also felt quite full, but they were not actively spraying on their own so it will have to do for now.

The sky was turning pink from an approaching dawn by the time Telah passed out. Still trying to do research- but fighting against her body's growing feral hunger drained her energy and she passed out on the table. Or- partially on the table anyway. Her chin was on the table, her sheath hung halfway to the floor from its sheer size, her balls rest on the floor and her butt had rolled back in the chair- so her genitals are actually what are preventing her from falling over, because if they didn't grip the floor her butt would have kept sliding further back till she falls.

Marcus woke her up unintentionally- shouting to her from out their bedroom window to see if she was okay without going over and letting her see him. She told him he was fine, yawned, and then immediately resumed her rune etching. Ren had turned back woman eventually, but then also passed out from all the energy she burned trying to get off- because she is too dumb as a donkey to remember how to get downstairs to reach the wall penis till she systematically destroyed every other possible option along the way. So today she woke up on the kitchen floor beside the dick in a pool of her own cooling pussy juice, once again terribly confused and then mortified at her actions. A quick shower and then she too was back to work. She did not even know what caused her to transform, because she remembers nothing from the transformation.

Time really started to fly by- and hour or two disappearing here and there for Telah now too. The haze of hormones coupled with the lack of blood flow to her brain causes her to dip in and out of a trance-like state. Hips thrusting her giant cock against the underside of the table with micro-thrusts, or just starts idly playing with her tits now that they are out and about. The skin is taut on them so they hold their form abnormally well for how absolutely enormous they are, and full of milk besides. It makes them extremely bouncy- not taking much movement at all to wobble and bounce, then she reaches up to steady them to continue working past them only to have her mind blank the moment her fingers sink into their surface. A gust of wind gets in from outside, she feels the coolness against her milk-soaked legs and seat and snaps out of it again temporarily.

Thanks to her confused gender- almost anything could turn her on, even things she should not be turned on by in the first place. Sure, Marcus because he is her long-time boyfriend, but now also his sister. But thanks to the invading genes she keeps thinking of actual animals- horses, donkey and zebra and what it would be like to mount them, dominate them with her superior dick. Or be mounted by them, spread open and stuffed full of their enormous member. Or shove her entire face into a massive equine pussy, or- concentrate!! Problem is- what she is supposed to be working on is a reversal process for massive equine bits, she can't not think about them.

Very slowly now, her genitals still grow. Now well beyond what the genetic structure of any beast could carry- the changes at least slow to her genitalia because it needs twice as much mana to achieve this increasingly impossible size. It already rubs against everything whenever she moves so it is hard to notice, when every 100th stroke a millimeter more of dick flesh folds out from the medial ring or sheath. Every hour or two it adds up to anew inch of length. Making it more and more grotesquely enormous. The table surface constantly feels hot to the touch because her dick's spine is wedged into the opposite side.

Spine starting to feel stiff... vertebrae slowly enlarging. Bones don't fit together quite right. Fingers stiff- and she has to push them past her giant boobs. The near-black coloration on her tits that was formerly exclusive to her areola finally consumes them entirely- spreading around their base and the dappling spreads further than that, starting to consume her chest now. Below it has collapsed entirely from her crotch all the way around- her lower half is entirely the new skin color, and now a layer of much lighter toned brown fur spreads over her outer thighs as another patch spreads off the base of her tail, and then her entire lower body is furry too!

Fuck, she can barely reach anything with these tits. Having to reach around their curvature in front of her shortens her reach- but if she moves any further forward her boobs also get to the table and either clear everything off its surface or wedge into the edge of the table and shove the entire thing back, once again out of her reach. There are several times she has to quickly slam her hands into the table to hold it steady because her cock jumps so hard it threatens to lift the table on its back! She wants to touch them sooooo bad. It feels so good and they need it, a muscle tension inside of them, anticipating touch. She can't though... uuuugh. Why can't someone else? Marcus could... oh, and Ren really would- as a donkey? She wouldn't even question it. They could both... mmm, suckle on either tit.

Ack, wake up Telah! She snaps out of it at the sound of pattering liquid on the table and realizes her tits are lactating like the automatic anti-fire sprinkler systems in buildings. Her arousal spikes so high, and she imagines it so vividly that she gives herself phantom pleasure- which causes the muscles to contract a bit in response to the pleasure. Her boobs are so fucking full constantly that even a small compression like that contraction is enough to express herself. She shoved herself back from the table so the crystal she is working on doesn't drown in milk, but then that shifts the table to the end of her dick, threatening to flip the table and she has to rapidly scoot herself even further back so her monstrosity of a dick actually escapes the underside.

She has to bow forward to take pressure off between dick and table to slide it out but the moment she bows forward she feels her balls brush her thighs. and flicks almost high enough to bounce the glans off the rafters above! They are fully resting on the floor, but also pushing into her inner thighs at the same time. That means they are bigger around than the chair is tall. Glossy near-black orbs, with a few fat veins sticking from the surface of the scrotum, though they snake around a lot because of how malleable the flesh is that they sit in. The tubes connecting the balls to the rest of her genitals are as thick as the pipes under the bloody kitchen sink!

On seeing her own dick, her eyes partially cross looking at it and Telah's breathing becomes heavy, her nostrils flaring again. It... it looks like a black and pink telephone pole between her legs. Both hands open and together could not quite get all the way around her cock at the base, the veins are as thick as a garden hose at least on the lower half of it. The glans flare so wide you could use the top as a small table. The urethra itself is so wide you could fist it! Without the table to weigh it down, when it bucks in a strong throb it jerks her entire body along with it. The dick is bigger and stronger than she is.

Her leg muscles feel antsy again but before she can even react to it, they start to swell a bit. They clench without her input and swell up, but then when they relax they remain the larger size they swelled to, as another clench happens. It makes her legs feel warm, which makes her crotch feel hot, and good, and then a clench. A gob of pre bit enough to make a slapping sound as it hits the floor and splashes a bit. Leg joints stiff- bones enlarging slowly too.

Telah is snapped back to full consciousness when she starts to tip forward without meaning to- her furry ass cheeks enlarging, then her hips pop and they surge in size a bit. She quickly arches her back the other way to keep from being flung out of the chair suddenly. Oh boy. She reaches back feeling how large it is... her puffy anus feels so big that just grabbing the edge of it is almost enough to fill her hand. You could probably pop an entire soccer ball in her ass without much resistance at all. She runs a hand over either cheek, groaning at the muscles wanting to be used. She squeezes and coos at the pleasure. Oooh, her ass never felt that good before. It is also shadowed by the pleasurable tingle of mana however. She squeezes a bit more again out of curiosity of getting pleasure from a place she normally wouldn't. Mmmm, more flesh stretching out from under her grip, like her butt is trying to resist her squeezing it. The hard plastic parts of the chair start to groan in protest. Ack, her ass and hips are starting to look two sizes too big for her torso. Her lower half doubles the size of her upper body!

Telah shoves down against the arms with her stiff hands trying to get up but then flops heavily back down- a small shock of pleasure from slamming her ass back onto the seat under her. Her thighs! The arms on the chair are loops of hard plastic basically- her thighs are bulging out of the middle of the loops! She cannot get up!! Her ass is so big it's grown into the chair, she is stuck! Her eyes widen at the size of her fingernails- now each a triangular pyramid in shape and turning charcoal grey from the thick layers of keratin. She can't lose her hands! She can't make the cure without hands, it can't progress any further!

"MAAAAARC!"

"Yea?"

"He-heiehilp! Me-eee-eeiheihei~!"

"On my way..."

He scrambled down the stairs, slamming the door open with his front hooves as he darts around to the front of the barn. The smell of sex wafted out of the barn in waves- you could see the air rippling from the heat inside the barn compared to the early morning air outside. Telah was still squirming trying to yank her ass out of the chair, but it was still trying to grow, bending the arms further out.

"Fuck. N-neiheid f-fuck!"

He pulled his pants off and his dick immediately sprang out. If nothing else- than at the sight of how giant and bloated smooth her breasts have become. When Telah seen the glossy black meat staff wobble into view and start to harden her struggles paused as her mind blanked again. The chair groaned loudly, then she groaned too before the arms exploded off either side and her massive ass wobbled free. She tried to get up but her legs are so big in comparison now that she could not get them under herself properly and flopped onto the chair, immediately shattering the seat off the bottom support, which then landed into the support on an angle and snapped that off from the wheels at the bottom and flung it across the floor toward Marcus as if in a show of power at how mighty her rump as become.

Her anus clenched rhythmically like a pair of puckered lips in anticipation of a kiss. "M-mm-mouh-mount mmmeeheihei!"

She rolled over onto all fours to present her ass. It looked like she was raising it high in the air- but it is just because her lower half is so much larger than the upper half, so it's raised by default; she can't lower it.

"B-but your mana?"

"Give, m-m-mount."

He narrowed his eyes. "Wait, so you didn't need to cum in..? Grrr, we will discuss this later."

Her anus was large enough that he could get his entire head stuck up her ass, but what his dick lacked in girth it made up for in length. And Telah's sensitivity and arousal are so astronomically high that pretty much anything could get her off anyway. Both her prostate and the urethra running back to it are so enormously bloated he could feel his cock grinding up past it INSIDE her ass, through her intestinal lining. His own balls were parted to either side of her swollen taint which itself is so large at this point it's like a dark brown pool noodle between her swelling ass cheeks.

He can actually hear a wet stretching sound below the surface as her ass clenches- the twisted muscle sinew visible through the skin and fine coat of fur for a moment before it relaxes and bloats round again, each ass cheek getting bigger and bigger. Her hips pop again, expanding in size but also causing a loud, violent *pop* from her femur as the join re-locates. Can't walk on two legs anymore. Marcus thrusts into her and her anus flexes in reaction to the pleasure- and suddenly the cavernously large passage becomes tight as all the muscle rings lining it clench rhythmically from bottom to top, squeezing and rippling up his shaft trying to swallow his cock deeper inside! He can feel her enormously bloated prostate wobbling halfway between his medial ring and glans like a hot water balloon wedge against him.

Brown spots spreading up from her hip slowly like a bruising fruit. Fur starting to crawl higher on her spine in the back and up the middle of her midriff in the front, torso getting a little wider from the bottom up. Thick veins throb around the base of the cock, spreading a bit further up her crotch in an attempt to properly support it. Her legs were partially spread out to the sides and straightened out against the floor behind her in an attempt to level her body out as much as possible with her mostly human arms holding her top half at least far enough off the floor that her giant boobs are pressed tightly into it- instead of being crushed under her weight entirely. Her pupils shiver and stretch sideways a moment before she clenches her eyes closed and concentrates as hard as she can. Can't think, but remember. Remember runes for mana flow- use fast.

Marcus felt the tingle enter him in a surge into his crotch through his shaft and then spread out to at least some degree through his entire body! Oh no- Telah waited too long, the amount of mana she needs to offset might fully turn Marcus in one blast!

From all four hooves up he starts to grow fur, black then white, then black again, then white again. A patch of fur on the middle of his chest, then one on his upper back, then the patch on his crotch spreads. Sheath pulls tight, helps steady his thrusting cock as it fuses to his underside in the naked patch his spreading fur already reserved. The entire underside is white- the stripes do not wrap completely around. The buzz of activity from the mana is so strong in his balls they lift and hold that position the entire time. His prostate immediately feels overfull and he starts jetting into her like he was already having an orgasm but it's just an absurd amount of precum! His urethra bulged and stuck open by the uninterrupted flow!

His thrusts were quick and shallow- every time he was going to pull back her anus ripples inward and the muscle ribbing grabs the edges of his wide corona and use it like a handle to pull him back forward. It is the most sensitive part of his dick so he cannot bring himself to resist it and thrusts in fully again entirely on reflex. His balls slap her giant taint, parting around it while the bottoms rest against her testicles- the size of a large carving pumpkin each. Telah's forehead was resting against her own shaft under her, but longer than her body- she can feel the veins throb into her forehead. She cannot think, only feel. She is still worried about the situation, still worried about what is about to happen to Marcus but unable to complete a conscious thought on them, so it was like her emotions were time-locked at the moment. Frozen till her thoughts resume.

Bigger, rounder, so tight, hot, warm, round! More and more ass expanded in front of him, then the small of her back enlarged a bit too. Marcus scrambled forward, grabbing around her giant ass with his hands as far as he could to get a better grip. His own legs enlarged and the muscles tightened as he attempted. Big muscular thighs of his own, then his butt- putting pressure on his pelvis, then- *clunk*. Hips expand, his enlarging legs allows him to climb over the mountainous ass in front of him, putting his front hooves once again on either side of Telah's swishing tail. Her tail has the same wildly voluminous hair her head did. So soft and smooth for a horse. His arm bones start to enlarge, muscles ache a bit, but then the pleasant buzzing tingle, then they clench automatically, swelling! Stripes advance up toward his shoulders. Covering his ass, starting to spread over his hips. Veins in his neck throb huge, he is grunting as he thrusts now. His own thoughts clear- he only thinks of mounting his mate, giving her what she wants. More of this pleasure. This giant round, glorious rump. It fits into the pocket of his crotch so well. He wants to live here in her ass~!

His body starts to crack and pop rapidly, getting larger, his front hooves sliding forward a bit to the small of her back. His nostrils flare, getting drunk off her scent. Pre explodes out of him in a constant flow in waves in the same motion mana seethes into him through his cock. Mane fully grown, hair on his head becomes coarse standing up to better match his bristly mane. It is striped black and white, but even at the very tips of the white stripes, it is still black- so on the mane the entire length is black at the tips.

The fur from the backs of his round ears starts to spread, over his temples, forehead, then the bridge of his nose as it pops and becomes much wider! His nostrils flare huge; black skin spreads from under where the fur has already grown. His nostrils then lips turn black ahead of the rest. As his body enlarges Telah's huge rump starts to fit better and better into his crotch, so he creates a loud hollow clap with every thrust against her. Telah has to use her mutated nails to help dig into the floor to brace herself against the force of his thrusts! Oooh he is turning too quickly. But she needs to offload into him! She can't stop now even if she tried, she can't think, every thrust causes an explosion of pleasure in her ass, crotch and then echoing up through her entire body. She started having sex with her boyfriend but she is going to end being mounted by a beast.

He startled her a bit making an odd chirpy sound before snorting loudly several times catching his breath back. Zebra can make sounds similar to both a donkey and a horse- they can also bark, occasionally. His neck cracks in rapid fire, getting longer. Collar bone regresses. Yea, there is no going back. Neither of them can even comprehend stopping as a viable option and there is just too much mana in play. His crotch shifts, fitting over her butt perfectly now as his joints re-align, preventing him from walking on two legs. Shoulder blades crack loudly, then pop as they re-set much lower, around his ribs as they pop in rapid fire too, barreling out his chest. Stripes consuming his entire body now, front of his neck and face are the last places to be covered.

Black nostrils flare- loud gusts of air as his now huge lungs try to get the oxygen they need to fuck harder! He has grown so large his front hooves are now on the floor on either side of her chest! His cock is so long it feels like its shoving up between her lungs when he thrusts in. His thrusts become stuttered for a moment and he makes several odd grunting sounds. His mane gets a bit taller, upper back clicks, neck expands to full size at the base and then the growth ripples up to the top stretching it to full length as well. His mouth hangs open a moment in confusion. Stiff, tight. Wants to ask what is happening but his voice box doesn't work the way it's supposed to anymore. His mouth doesn't even move properly. Tongue getting too big.

He makes a stuttered half-bray every time there is an abrupt click and both top and bottom jaw push further out from his face! His entire face being stretched longer around them- and each surge causes another pair of teeth in his mouth to grow huge and blocky! Pupils shiver and stretch wider, wobbling around as if the two sets of genes were arguing for a moment, but once they are already rectangles they immediately settle, locking in that shape. Iris expand to hide the whites of his eyes. Just like with Ren- the longer face tilts the bridge of his nose higher and higher as it becomes the top of a forming muzzle, which then shoves the top into his already fur covered forehead, which tilts his forehead further up and back, compressing the compartment his brain is inside of. Crushing and forcing his brain to physically shrink, removing its higher functions. His mind was blank from hormonal corruption, but now it is unable to fade back even afterwards, it's trapped in a repressed state. Unlike Ren; his transformation doesn't end when he stops being horny.

Telah clung to the floor, using her giant boobs stuffed between her and the floor to help brace against his savage thrusts. Marcus is a feral animal now- he will not hold back. His mind is filled only with the instinct to mate, cum, make her big and pregnant. Telah gasps between thrusts because his dick rams so far up into her that he winds her with every thrust! His tasseled tail whipping around behind him. She can feel the hot gusts of air against her upper back- his head is lowered; trying to nip at her neck, but because she isn't fully transformed he cannot reach her neck. His front legs are looped around her giant hips, so his hooves rest on either side of her monstrous sheath while he spanks her taint with his bouncing black balls. Even fully transformed his testicles are at most 1/20th the size of hers.

Telah orgasms first- as soon as the mana flow is not distracting her body from its automatic functions her pleasure easily fires her over the edge. Her urethra flexes so hard it actually slightly lifts her entire body resting on the other side of the cock up off the floor! The pillar of white that blasts out of her dick fires across the floor lightly touching the back wall, but spraying out to the sides as it collides against the floor on the way across, scattering sticky white beads everywhere in the entire barn! The orgasm causes her muscles to ripple and clench from the pleasure which ripples her anus around his shaft even more- setting Marcus off!

He lets out a loud whiney of pleasure, tossing his head back, standing up off her lower back with his hooves just over her rump as he shakes his neck back and forth in pleasure!

Afterwards his dick turns flaccid so fast he doesn't even need to pull it out, it swings out on its own. He plops off her and looks around, confused. He feels tired so he just folds his legs under him and lies on the floor. He does not know where he is or what is going on anymore. While the information exists in his head- it is too complex of information for his current brain to parse. He is a feral Gr?vy?s zebra now.

Telah casts a reversal on herself to regress some of her changes but the results aren't nearly as good as she had hoped. Her balls remain this big, her dick shrinks a little bit, her hands become dexterous again but she still has giant block-like fingernails. Her butt regresses to about half its current size, but, that is still WAY bigger than her normal human butt. Her fur regressed a bit but her lower half is basically still coated. That was the best she could do. That, and her thoughts are clear again but she knows that is VERY temporary. She cannot offset any more mana to reset the speed of the changes because Marcus is completely turned. Dumping into Ren won't even work in the first place- she turns feral when she is aroused. She cannot absorb anything if she is also fully turned, and in order to connect closely enough to transfer mana flow; she will turn feral, guaranteed, thus making the attempt pointless. So Telah is out of 'continues'. She finishes the reversal before she turns or its game over. And it isn't looking good. She is still assembling the crystal- the crystal is just the spell she then needs to imprint into a physically brewed potion and then drink. So there are still two more steps after this.

She did not even have a chair to sit on at this point- she had to drag a block of hay over and sit on that. So hard to concentrate. Marcus looks so handsome as a- ack! No! He looks like an animal! A handsome, hung an-nnngh-no. The air is so thick you could cut it with a knife. The smell of sex is everywhere. Gallons of cum splattered all around. A thunderously deep gurgle and the table starts to tilt- ack her- oh wait. Her dick is still flaccid, it's not her cock this time, her balls! The size of a yoga ball each her testicles are still swelling her fluid capacity obscenely higher! She has to slide her brick of hay further back... but then her arms cannot reach far enough to work...ugh. She has to turn sideways to work now.

Stage IV : OVERMAX

Teeth groan, grinding into one another, trying to grow without the room for it. Jaw stiff. Veins in her neck bulge obscenely. She can hear her heart beating in her ears. Every time she thinks of a rune to write it, she thinks of the animal it represents and it turns her on more. Arms feeling stiff, she puts a hand down into the grass to flex and snaps out of it as she falls forward- there is no grass there she is sitting upright in a barn! She had phased out and imagined she was a horse! Squirms in her seat, her butt starting to slowly enlarge again. Rubbing her plump anus against the hay, remembering what it felt to be skewered on a huge zebra. Penis gets chubby, sheath fattens and the folds of skin start to roll out slowly, jiggling around. Bouncing a bit on the top of her behemoth testicles. A little more blood pools, increases its weight, now it's wobbly and fat.

Her worry snaps her to occasionally and is never entirely silenced- but the gaps in which she can consciously think about it long enough to DO something about it are increasingly sparse. Telah approaches completion of the crystal at least- but it seems the closer she gets to finishing, the slower she is able to progress because she is constantly distracted. Dick wobbling four feet out from her body and it's not even remotely hard yet- the head is facing the floor, it hasn't even fully unpacked from the sheath yet and it is already longer than an actual feral horse's cock. If her giant balls didn't support the bottom of it, its weight would just yank her over onto the floor. It starts to drool a thin line of pre already. Not even from arousal yet- her prostate is just producing more than it can possibly hold. Her breasts leak stray beads of milk if they are so much as moved at all- she does not need to even touch them directly. Every time she spaces out her pupils stretch horizontal, then snap back to circles with her concentration returning.

Ren was dressed in several layers of bulky clothing and wet from slapping herself in the face with ice water from a bottle she kept nearby in an attempt to snap herself out of it every time she started to get a bit aroused. It is hard for her to regulate because her conscious mind fades out along with the transformation fading in, so she has no recollection of falling into the trap in the first place. But the time between blackouts shortened so even she realized there was a growing problem and got paranoid- jumping and dousing herself at even the slightest dip in her train of thought.

After being informed the clerical magic could not work with this, she started working on just a different version of what Telah herself was doing. A purification spell to be layered as an imprint in a physical potion- but it cannot be a generic purification because that won't recognize equine genes as a problem. It needed to target these specific changes. Unlike the others at least; Ren's change is very black and white. She is either completely normal and can think fine or she is completely gone and cannot think in the slightest. So when she is human she is able to get a lot more work done than Telah can. Ren once again completed her work. She was nervous given the results of her last 'cure' but at this point they needed to try. They were running out of time. Every time she makes an ass of herself it comes easier to turn her on and turn her into an ass again. At some point Ren will just get locked into a feral form of a jenny in unending heat.

She took up her second attempt at a cure and darted downstairs. She darted past the outside of her house and slowed, looking to her left. In the plot of grass between the two houses was a huge zebra chomping on the grass casually. Where the hell did the zebra come from?! Is that her BROTHER?!?! The solid black taint and round balls behind him, facing her stood out as an absence in his stripes. Her eyes widen and she hurries again- trying her best not to think about it, knowing she will change if she does.

"Telah! Telah, I think I have a cure... again. Hopefully th- ooh... woah."

Ren froze like a deer in headlights at the sight of Telah. She has fallen onto the floor- her hips turned to the side but her upper body sitting up from the floor. Even with her arms fully extended to hold herself up the fronts of her boobs still spread flat against the floor- her cone-like teats bent sideways to jut straight forward with a tiny pool of milk under either one. Faint veins can be seen at the base of either breast trailing onto her chest. All of her skin is very dark brown now- making her look completely black in indirect lighting. She has a full mane and it is the same length of wild brown hair the entire way down, so the wild wavy hair cascades off her side, completely covering one shoulder and upper arm under it. She is breathing heavily, her brow hardened but a vacant look in her eyes. Trying to concentrate, but only able to stall her horniness. It takes all her concentration to try and concentrate- so she isn't actually able to think about anything. She cannot think horny thoughts but also cannot think about her research- so she simply isn't thinking about anything.

Her lower half is turned to the side because her testicles are the size of oddly shaped large beach balls each and still threatening to grow bigger. Even with fully equine back legs- her balls would drag on the floor if she attempted to stand up. The testicle on the floor doesn't move but the one loosely draped over it in this position wobbles back and forth on top of it with each clench. You could fill an entire human hand with the loose skin on her sheath alone. Wrist-thick veins trail off her crotch halfway up her torso on the underside trying to feed this monster what it demands, making Telah feel heavily drunk at absolute best because her blood flow is diverted to her crotch instead of her head.

Her dick isn't even hard, it is just fully rolled out, dividing the entire front half of the barn in two, the glans are as wide as Ren's chest and it's still soft. The shaft is as wide as a telephone poll.

At the sound of Ren's voice, Telah partially comes to. Groaning at first, lifting her head high as the veins throb hard in her neck. Her teeth get a little bit bigger and her jaw aches, wanting to stretch. "Nnnnghah! R-Ren... good. Good just... just use the... thing... my... stuff. Thuh-th-uuughnnn- *neigh*! I- I already... the blank potions. Ready."

"Wah-w-woow it-it-it-IT!" Ren's eyes went wide, she hunched over and started sweating profusely. "Hah-hawt, s-AAAW HAAWWWt eeEEE-OR, NEEE. HOOOOArnEEE-AWW!!"

Ren cannot get to the brewing stand without encountering Telah, and just glimpsing the sight of her was more than enough to tip Ren over. Those extra layers of clothing just meant there was more to break out of. Stretching, shredding threads as she hunches further and further over rapidly devolving into an ass. Her neck becoming huge and mane bristling up out of her, pelt spreading. Huge butt shreds out of her pants, growing tail ruptures the panties and flick the scraps away. Torso explodes the body of her tops and swelling arm muscles shove the sleeve scraps down far enough that they simply fall away. The jenny's ears flick forward in attention as her concentration shifts from her confused transformation immediately back to the giga-dick.

Telah had a spark of worry and tried to pull back but it's too heavy! It is too big and far too heavy to get up off the ground, her genitals anchor her in place. Even when they were below average for a horse, her genitals still got off on her body without her input. Unfamiliar with this type of pleasure; they were able to overwhelm her from the start. Stronger than she is. Now they are bigger than she is, heavier than she is, stronger than she is. She isn't a person with huge genitals attached to them, she is a pile of a genitals with a person attached. But it's okay! Right? Ren says she has a cure. So it is okay, she can... enjoy this, right. RIGHT? A little more. Just before... yea. Just a little more now, because she can cure it. Just a bit more now. A... aaah little more...more then....moooar than more. And more. Fuuck more. Cum more. So much fluid... needs to CUM."

Ren darted over the dick and then turned her rump around. Her tennis-ball sized clit popped out with a wet *shlick* sound before she abruptly sat her ass down on top of the shaft and started grinding against it! Her wet twat leaving a slug-trail of pussy drool up and down the shaft. Her forelegs just under the corona, she bows over to face it. Even her enlarged donkey tongue is small enough in comparison that she can shove it inside of the urethral procession! She gently nibbles on the outside of it with her giant blocky teeth. Her malleable, soft equine lips fit perfectly into the depression around the urethra and her flared huge nostrils jet hot air across the face of the glans.

Because Ren is anchoring it to the floor, as the cock hardens and grows at the same time- it shoves Telah backwards rather than itself forward. Her testicles gurgle and churn like cauldrons and swell well beyond what can fit between her legs, sloshing around behind her, cradling her lower butt as they grow still bigger. Torso starts to widen from the bottom up, her ass now fully equine again in size and shape. Fur starting to spread. Ren telling her the cure was ready broke her resolve to resist. She cannot think to realize that if she fully turns then she cannot actually USE the cure, even assuming it does work- which they also don't know for sure.

Hoof segments get too big, start to wrap around and overcome the ends of her digits. Hands elongate, deform. Palms lose their shape, fingers joins lock up, bottoms compress together up to the tip till finally the hoof segments complete a U shaped horse hoof! She has no hands to use to complete the potion even if all the components are already prepared! The cure could in fact be right there- but no one is currently able to do anything with it. Her muscles bulge tremendously and she whinnies loudly as her dick flares! Ren is forced to scoot further forward in order to hunch far enough around to remain playing with the glans- because when it flares it is wider than a manhole cover!

There is a deep rumble- her heart beat and blood pressure being amplified to feed the cock well beyond what it should be physically capable of doing. The rumbling beats are echoed by a quiet rushing sound, then a sharper twisting sound, of tissue expanding. Bigger, fatter, heavier. Ren's pelt is darkened from her sweat from the sweltering heat radiating off the dick. The air waves from the heat and dense musk.

Telah's muscles get so huge, but horse shaped, so when they flex they do not properly fit anywhere in her body, forcefully crunching and twisting her bones into a horse shape when they clench. But instead of a foreign shape being forced on her it instead feels satisfying, like her body is taking the shape it was supposed to be! The fat veins in her neck throb as her neck pulse bigger in length and girth. Shoulder blades get yanked forward, popping loudly into a quadruped stance. Ribs now huge. Heart and lungs massive now, hammering away in her equine chest. As her arms are forced down and forward by the change in shape it unintentionally compresses her giant tits! They explode milk all over the floor making her whinny again in pleasure, and they swell one last time still bigger and fatter- but because they are compressed; they fuse together! She has a gargantuan over-productive horse udder, but... on her chest, instead of her crotch.

"Heihei-ieh eh! Hah-haiii, me-hei hooh- horn-n-ny!"

Telah's brain jittered with giddy energy. The pleasure and horniness teetering on the brink of her sanity. Felt so good, why would she ever stop? How could she ever stop? What else even exists? There is so much pleasure, it's... it's everything! No room left for think only pleasure! Hahaha. Nothing to resist, only pleasure. Nothing to think about, only pleasure. Telah isn't here right now, only pleasure. No horse or Telah, no one, nothing, just pleasure, just pleasure, pleasure, pleasure, pleasure pleasure pleasure pleasure pleasure pleasurepleasurepleasurepleasureple-heh-hhEEAAASURE!!!"

Ren had to start spreading her legs further- the cock was getting so wide it was pushing her legs out! Bigger, wider, heavier. So much meat, impossible amounts! The hard, rubbery, bumpy corona shoves into her ribs and forces her to scoot forward so it can fit into her midriff but it still grows! Ren's rear legs start to lift up off the shaft, then her hooves get lifted up off the ground! The flare of the corona alone is big enough to lift the rear half of a full grown donkey jenny off the ground! Her front hooves brace her self on the ground in front of it as the love-drunk donkey keeps slurping the pre firing out in pulses! The stream of fluid is uninterrupted and merely pulses from weak to strong- the next throb starting before the last is able to fully taper off. The glans of the monstrous cock wider than their car is tall. The shaft as thick as a human torso- not including the urethral bulge which projects a good ways off that. The veins as thick as a human arm. Telah's lays beside it, her rear legs pushed forward and forced to cradle the sheath by her testicles- now the size of a giant faire pumpkin each. Her taint alone is as thick as a fire hydrant. It looks like she is developing a fat gut when its actually just her mutated prostate forcing more space inside her lower body.

Skull crunches, jaws click, teeth grind against one another. Nostrils flare huge, jaw bones push forward. Iris expand to hide the whites of her eyes as the fur spread to consume her face. Telah neighs loudly, shaking her head from side to side from the intensity as her cock gives a mighty throb and explodes. The jet of cum is so violent Ren cannot even attempt to drink it- the force slams her head back off the glans before slamming into the dirt outside the barn hard enough to cut a shallow trench into the ground! It then sprays straight up against the end of the trench it cut before fanning out and splattering down in a colossal radius, utterly smothering the grass under its weight! By the time the orgasm stops and the cum settles and spreads as far out as it is going to- there is a forty foot wide pool of gelatinously dense semen a half inch deep. Nowhere to dump her mana so no way of reverting these changes. Telah is stuck. Marcus is stuck.

Ren wanders around thrusting her cunt into anything that sticks out, eventually getting herself off but then only half reverts. She can see Telah's unbelievably freakish size from almost anywhere on the property and the moment she looks at it she fully turns again. So twice she half-turns human only to scream out how horny she is and how much she wants it as her voice cracks hoarse and thunderously low, back into a donkey for another ride. After those two half-attempts it just stopped happening. Now her form gets a little stiff for a moment after orgasm but then just resumes being donkey. Too horny for an orgasm to dispel. And if she doesn't stop being horny, she doesn't stop being a donkey. So Ren too, is trapped.

It was over a week later that bill collectors came to the ranch wondering where their payment is only to find a huge zebra, a donkey rubbing its twat on literally every surface, and a demi-horse mutant whose cock alone is heavy enough to crush a vehicle under. But they also found a message carved into the dirt of the field in giant letters- dug by a hoof; 'I need paper and put a pencil in my mouth'.

Telah's mind never went. It blanks when she is horny- which is at least once every hour of the entire day- but her pleasure is also magnified so high that it is really easy to get off. Once her obscene orgasm ends, she can think clearly again for a short while. Telah never completely turned. She has a horse muzzle but it's not full sized- she still has a bowline and forward facing eyes. Which means her brain was never compressed- it's still human. Her chest is also a bit more wide than it is deep, giving it a somewhat human shape, plus her oddly placed udders resembling breasts due to their placement. Point is- she is human enough that she could direct others to complete the research they already did and mix the cure for them.

As a bit of consolation in the aftermath- once restored human, Telah's research ended up catching the attention of RHE. The company she was trying to imitate in the first place, offering a position as one of their researchers. Some say she is the reason every RHE contract has 'do not try this at home' written somewhere, at least once.