The Formula: Homecoming - Part 2 - Changes

Story by poweron on SoFurry

, , , , , , , , , , , , , , , , , , , , , , , , , , ,

#2 of The Formula

Penny and John completely lose it, their animal urges taking over as their bodies grow and change. The heat is insistent and unbearable, can they fight it?

And a big, big thanks to Obsidian Reaver (http://www.furaffinity.net/user/chaamp) for commissioning this story!

As always please let me know what you think in the comments, I always appreciate feedback!


The Formula: Homecoming - Part 2

Penny collapsed onto her knees in front of the bed, unable to support herself as she struggled with the invading heat that was saturating her, her tight white panties peeking out of the bottom of her skirt as it rode up her legs. She moaned as her B-cup breasts began to swell in her white spandex bra, her cleavage deepening under her increasingly tight blouse. Her nipples throbbed as they pushed painfully into her bra cups. Through it all she couldn't let go of John's lengthening foot as her sweaty hands gripped it taught creamy flesh, her pussies new fur thickening in her panties. Every touch of John's foot on her skin sent a small jolt of electricity right to her pussy and hard throbbing nipples. It was intoxicating as it washed over her, she never wanted it to end. There was a small and diminishing part of her that was also afraid, afraid of what was happening to them, fighting against her bodies insistent demands. She had to get help but she couldn't get her body to obey as she felt her breasts grow even tighter in her bra. The feelings invading her body felt foreign but also strangely...right.

Holding John's foot she could feel that his skin was hot to the touch, its creamy expanse tightly drawn across the muscles still convulsing underneath. John's foot was at almost double its normal length. Every time his toes wiggled long cords of thick muscle pressed and stretched the skin along the top of his foot, their spasms so abrupt that they looked like they were trying to escape the confines of his body.

She didn't know what was happening, small tears pouring from her eyes down her flushed face. The tears weren't out of pain or concern, but from the building lust deep in her belly, the pleasure and desire wracking her body. The need was too much, She felt like she could or would fuck anything to make it stop. "nuhhhh....ohhhhh...J..John I need...nrrghh...mmmmhhh" she moaned as the lust pushing out everything but the thought of John's feet and the heated tingling in her drenched pussy. Her breasts throbbing as they swelled outwards, pouring out of the sides of her no longer adequate bra, her blouse's buttons straining. She had to have him, all of him and especially his large feet. The voice in her head telling her to get help fading as she manipulated John's large toes in her hands, her white panties soaked with her juices clung wetly to her increasingly furry mound.

Penny parted her flushed red lips and resumed licking John's distended foot, eliciting moans and growls of pleasure from John. His large toes spreading as his body tensed, her tongue's hot wet touch on the rough sole of his foot sending shudders of pleasure up his legs, driving him wild. She cupped his heel as she went over every inch of his foot's contours with her tongue as short brown fur began to push out of the top of his foot. Moving to his toes Penny was too intensely attentive to their large girth to notice the fur spreading around his foots circumference. The fur spread over his achilles and pushed softly against her fingers, its silky strands like thickening in waves. The skin of John's foot darkened and thickened, turning a deep black as the fur spread. Penny only took notice as it finally peaked at his toes, the brown fur quickly covering his large digits as their bones cracked and reshaped, his toes lengthening into something more animalistic. His toenails absorbed into his foot as the silky fur filled her sucking mouth.

"Mhhhmm...ohhhhhh....John....your...." she moaned coming up for breath in a brief moment of clarity. A long trail of saliva linking her mouth to John's reshaping furry toes. "Wha...my boobs are..so...nngghh...big...and...why am I so....hhhnnghh...wet..." she groaned, suddenly aware of her overstimulated and changing body. Her clarity was short-lived as she saw John's large toes. "uuuuuuhhhhhhhh!!!!" she moaned throatily, the very sight of his foot's new lupine form made her pussy gush and her expanding bosom throb, her eyes rolling into the back of her head as her pussy leaked twin streams of steaming hot juice down her quaking thighs. Penny dived back onto his foot still in the throes of her building ecstasy, her labia pulsing as resuming her ministrations with renewed fervor. She wanted nothing more than to have his feet in her, on her, any way she could manage. The more she touched them the more turned on she became, wiping away any other thoughts.


As Penny indulged herself in John's feet large thick black pads grew out from the forest of short fur under each of John's long toes. His fur-covered sole growing its own much larger pad at its crest. "RRGGHHH....AAHHHRRRR!!!....FU...FUUCCCKKKKKKK!!!!" John moaned as his one remaining shoe held onto his foot somehow, its remaining structure cutting off circulation to his toes as it gripped the middle of his foot like a vice. To add insult to injury his feet began lengthened even further. The sides of the shoe buckling as his legs reshaping into true digitigrade with a series of loud crunches and cracks. John's long constrained foot extending out of the top of the shoe as it continued to grow, the shoe's ruined toe-box and collar dug hard into his flesh. However the shoe though was no match for his growing foot bones as finally, with a long slow rip, the gray shoe split apart, his lupine foot paw bursting out of its size 10 prison. The shoes remaining tatters clung weakly onto the top of his foot before falling to the floor, the blood-flow restored to his large toes. John sighed, his foot finally free from its constriction, his body relaxed for the first time since whatever was happening to him started, but his reprieve was short lived. He felt a tingling in his toes, like feathers tickling his skin, the sensation growing more and more intense until he realized it wasn't on his skin but below it. "...something...pu..pushing..inside...can't...hold it...nnuughhhhh!!!!" he groaned, trying to will his body to stop changing, stop the beast he was becoming, but he was losing, badly. He felt something pushing through the skin of his toes as the tingling hit a crescendo, his body shaking on the bed trying to hold it in.

John's toes began to quickly extrude sharp black points, parting his skin and fur. The hard nubs drew small beads of blood from his toe flesh as they pushed out of him, growing longer and thicker. Soon his toes were each capped by their own large vicious-looking obsidian claws. Penny's tongue firmly wrapped around his toes the whole time, taking each one into her mouth in order. When she'd had her fill of his left foot she travelled to his right, her hands tracing and playing with his large soft foot pads. Penny's mouth was completely full of his toe flesh and it was driving her wild. But she was also increasingly finding that she could no longer fit his toes entirety into her mouth, John had grown too big. As she backed off a little she her tongue collided with the growing black spike, not knowing what it was she circled it with her dextrous muscle, greedily sucking as she went.

As John's claws grew Penny was quickly growing overwhelmed, her lust-glazed eyes widening as what space remained in her mouth was filled. She relished the fullness of her mouth, it sent shocks of pleasure through her body, causing her clit to strain above her throbbing labia, its sensitive surface rubbing against her soaking wet panties. Her underwear wrapped around a growing a sea of silver fur as her hips began to widen with a series of soft cracks, the white panties pulling between her relatively flat athletic ass cheeks as her body grew. Barely aware of the changes taking place in her nethers Penny was focused on John's changing foot even as his expanding claws forced her to back off, her mouth reluctantly separating from his toe. But her desire was too strong, she felt like she was going through withdrawal, she couldn't stand being separated from his foot for even a moment. Her increasingly voluptuous body shaking with need as she grasped at the new lusciously curved claws that now adorned his toes in her hands. Penny's body calmed slightly as her mouth resumed sucking and licking the areas around and between his toes, paying special attention to his black claws, careful to avoid their razor-sharp tips. The claws texture on her mouth and tongue was incredible as she wet their obsidian surface with her drooling lips.

Penny continued to have her way with John's huge wolf paws as brown fur raced up his bulging digitigrade legs. His tight pants rode up his calves, the khaki's unable to take the added mass of his muscled lupine legs, their tight cuffs began to tear, quickly giving way. The cuffs were followed by a cascade of small and large tears throughout the length of his pants, their structure breached, no longer able to contain his animalistic legs, the double-stitched seams failing one after another. The rips grew larger as they travelled up the length of his pants, following his still changing legs. Brown tufts of fur erupted from the torn seams as it quickly coated his legs, making its way to his crotch. John's cock was still straining under his zipper, the bulge having grown in size along with his feet. His pants shredded all the way to just below his newly furry hips, leaving him with a khaki speedo adorned with long leg-length shredded tassels. His upper thighs pressing tightly into the remains of the leg holes, the pants creating increasingly deep canyons in his legs flesh as they grew more muscled. The remaining fabric was saturated with his pre, it pooled at the threshold between his pants and legs, creating steaming rivulets of the slick substance through his fur and onto the bed.

"ARRHHHH....AHHHHH...AHHHH!!!" he moaned lustily as his hips bucked, their width painfully constrained as the waistband of his pants dug deeply into them. If there was any space left in the legs of his kaki speedo his swelling balls would have poured out of them, their virile bulges rolling downward trying to find room to expand. But there wasn't any room anywhere in the straining garment, the fabric pulling deep into his ass as his crotch and hips continued to grow. The pants becoming so tight that they had become a second skin, his penis and testicles contours visible through the fabric as his hips cracked wider, pulling the wet fabric even tighter against his crotch. His grasping hands tearing long gashes into the bed as the muscles in his neck tensed hard.

His crotch bulged in its khaki prison compounding the pressure, his mouth practically foaming as his cock pressing against the brass zipper with all its might. The remains of his pants doing all it could to contain his growing frame but it wasn't enough to hold him. John hips widened again as he groaned, muscles bulging, his wait finally rupturing the straining waistband and with one long loud "RRRIIIIPPPPP...." John moaned in relief and pleasure, his crotch finally free, his throbbing dick slapping his stomach as his swollen balls resettled under his crotch, drool leaking from the side of his mouth. The remains of his soaking wet khakis sloughing off of his crotch leaving him fully naked from the waist down, his penis straining hotly into the air. His cock was barely human anymore, but he couldn't see it, his eyes rolled into his half-closed lids. Shocks of pleasure coursed up from his sensitive foot pads into his throbbing testicles and the base of his cock, pre spurting down his shaft as Penny manipulated his feet.

John's nethers were covered in the same brown fur that covered his legs and feet. His balls slightly swollen, the size of golf balls in his tight scrotum. His cock was painfully erect as its eight inch length tapered into a point, pre continuing to leak copiously from its reshaping head. His whole crotch throbbed with the beat of his thumping heart, the fur crawling its way up his increasingly muscled stomach, his shirt straining as his buttons held on by a thread.

Penny had gotten onto her feet again and was having her way with his feet, both now free from his restrictive sneakers and bandages. Her slender fingers gripped their long muscular girth as she lifted both his jerking legs into the air, positioning their large soft pads against her face. John's legs were deceptively heavy, full of thick bones, muscle and fur, but she managed to lift them even so as she grunted from exertion, her juices gushing down her legs. If Penny had been in a clearer state of mind she may have noticed the new bulging muscles running down her arms.

"st...stawwpp...uuuhhhhh...d..don't..." John moaned weakly between moans of pleasure. Penny was too far gone, her mind filled with the throbbing insistent desire coming from her loins, to register his pleas. John's large lupine paws were hers for the taking and she would have them in any way that she could. A barely contained animalistic lust now drove Penny's body. John's sharp claws clicked against each other above her head as she rubbed the paws on her cheeks. A cascade of drool flowed from the corners of her lips down her chin as his feet sent fresh shudders of pleasure down the length of her body. Her pussy throbbed as it leaked, her inner walls shuddering as silver fur crept up her stomach. Penny's feet began to feel tight in her small white sneakers.

Johns legs lifted into the air only compounded the pleasure arcing from his feet. "dont...they're....nnnnghhh....UUURRHHHH" he groaned, his objection wiped away as his balls throbbed and began to swell in their sac. The stimulation of his muscular thighs lightly bobbing against his family jewels driving him wild. Penny's ministrations with his feet making him thrash on the bed in pleasure that pushed out all thought from his head.

As his balls grew, Penny was having a hard time keeping John's legs aloft, their strong length spasming in her grip. Reluctantly she dropped his left leg, it landed with a hard thump onto the bed as she concentrated on his more manageable right foot. With some effort she positioned his sharp black claws right near her dainty neck. As she held his magnificent foot flesh Penny wanted so much to fondle his black pads and the soft fur in between his toes, but she had a deeper need for him than she could accomplish with her mouth or hands alone.

Using the John's clawed toes like a knife, Penny dragged John's foot down her blouse, his curled claws catching on her collar briefly before proceeding to tear through the cloth like it was butter. As she dragged downward Penny could feel the heat of his black foot pads against her flesh, making her breasts throb and pussy issue fresh waves of lubricating juice as she moaned, almost losing control of his foot in increasingly shaky hands. She was breathing faster as she felt an indescribable pleasure from the touch of John's paw against her skin. She guided the foot down her neckline, hitting little resistance on the cup of her bra as her now DD-cup boobs bounced free. Lower and lower she went, his claws raking her blouse as it was reduced to a jumble of sweat-soaked tatters hanging off her shoulders. Penny's quickly rising and falling chest was fully exposed to the increasingly warm bedroom air she shuddered in arousal. Something was building inside her pussy, its walls thrumming madly, she couldn't take it anymore, her body tensed, unable to control her hands she released John's large foot. Gravity guided John's claws downward as he unwittingly nicked her hemline near her hip, the tips of his claws barely scratching her bare skin. Penny was left half-naked in her torn skirt and over-stretched soaking panties. John's thick leg bounced on the bed as it landed making him moan in pleasure.

Penny orgasmed almost the second her John's leg hit the bed, unable to hold the building arousal back, her body hunching over as her pussy clenched in its white prison. She grabbed her crotch through the skirts fabric with both hands as her hips bucked, juices leaking down her shaking legs. She could feel her pussy throbbing even through the layers of clothing as she clawed and clutched at the fabric. "HAA....HHHAAAAA.....GAWWDD....AHHHHHH!!!!" she moaned as her body shook, her hands bracing themselves on her thighs for support as her large breasts hung off her chest. Her pink nipples standing to attention, as hard as a rock on her swollen mammaries. Her shuddering abdomen and stomach were already covered in silver fur that spread like wildfire over her body as she orgasmed, its radiant heat assaulting her whole body. The growing wave of fur crashed against the underside of her jiggling breasts as it simultaneously flowed down her legs. Tufts of her fur's silky silver strands pushing between tightly clenching fingers as she gripping her thighs, riding out the storm of pleasure assaulting her body. Penny's world turned white as she continued to orgasm, fireworks going off behind her lust-glazed eyes as pure ecstasy washed over her body.

Penny leaned against John's large supportive feet, his strength the only thing keeping her upright as he held her stomach in their clawed embrace. Penny's mouth stuck open in a continuous orgasmic moan as her eyes rolled wildly in her head. Her pussy gushed fresh waves of scalding juice as it spasmed powerfully, its thick lips wiking open and closed. Penny was still coming as her flat mound began to push out into a dome of muscle as her vagina grew in size. Her pussy burrowing deeper and deeper into her body as her inner walls thickened and strengthened. Penny's hips rocking urgently as her womanhood expanded, her skirt sticking wetly to her crotch. Her large breasts bounced with her thrusting as fur wrapped around their heaving expanse, leaving only her throbbing pink nipples exposed.

Her growing labia pushed heavily against the fabric of her panties, her underwear sinking into the sopping wet depths between her spasming lips, forming a deep camel toe, her underwear refusing to give up. Penny's panties were reduced to a twisted thong-like stand of material between her ass cheeks as her pussy hogged what little room was left in her underwear. Her orgasmic moans became more urgent in regularity and volume as she felt the underwear rubbing against her sensitive pucker and intruding into her large heavily spasming pussy. As she jerked against John's broad foot pads her ass swelled, fatty tissue growing as her cheeks plumped, leaving her with a bubble-shaped butt. The fur was relentless as it proceeded to cover her new jiggling ass cheeks, its soft silver expanse rushing down the back of her pussy-juice soaked legs to join the fur already crawling down her thighs.

While Penny orgasmed at his feet John groaned as his own brown fur sped up his torso, his cock straining as Penny humped his large sensitive feet. His balls, now the size of lemons, throbbed between his legs, his ball sac's skin tightly wrapping the pulsing virile spheres. "NNN...Nnnnarrghhh!!!" he groaned as his teeth ground together, his body betraying him as pronounced muscles bulged and twitched in his arms and chest. His hands grew and thickened as they tightly grasped the mattress cover through holes now adorning the shredded sheets. John's hands became immensely strong as his digits continued to thicken, sharp black claws erupting from his fingers as soft pads pushed out of his digits and sweating palms. The fur crawled up his neck and down his muscled arms, covering them completely as his furry flesh filled his straining shirt to its limit, bulges of fur and muscle pouring through increasingly large tears in its back and shoulders. Somehow, through the heat, John managed to wrestle back enough control to realize that his hands didn't feel right. Releasing the bedding he held his changing hands in front of his face, his eyes struggled to focus, blinking as the lust haze cleared.

"Whats...rrgghh...happennarrghhh...to me...." he growled in a mix of shock and disbelief as he turned his strange new hands in front of his wide eyes, his thick digits curling into fists. The realization of how much his body had changed crashing over him, his libido just barely contained enough for him to process what he was seeing. As if to answer his question the bones in his face began to push painfully and uncomfortably outwards. His hands immediately cupped his face as he groaned, his nose blackening, becoming wet and broad as it pushed further away from his face. "naarrrghhh....this isnt....nnnghhh....riiggghhtttrrrrRRRHHH" he growled as his jaw cracked loudly, its bones extending into a long lupine muzzle. John eyes pressed shut as small tears streamed down his changing face. His paws gripped his face tightly, trying in vain push his muzzle back in, but it was no use.

He wouldn't let it win, he wouldn't! But whatever was driving his increased libido was eroding what remaining willpower he had left, the waves of heat crashing against his mind as his face extended. "W...won't let...hurrrr...wont....grrrghhhh....I...I....nnnrrrghhhhhh" he growled, his thoughts becoming scattered and faint as his teeth grew sharper and larger in his muzzle. Brown fur raced up his muscled neck covering his face as he whined animalistically, his teeth grinding. John's pearly white canines extended into long vicious fangs, their length glistening with drool as they protruding past his muzzle's black lips. His ears migrating to the top of his head as they grew, becoming pointed and filled with tufts of soft caramel colored fur. "RRRRRHHHHHHH!!!" he rumbled lowly, his voice taking on a deeper more animalistic quality as he lowered his paws from his now complete muzzle. Baring his teeth in pleasure, he panted, thick sagging strands of drool leaking out of the sides of his mouth as he opened his tightly shut eyelids. His large eyes now an intense amber, full of lust and animalistic intelligence, betraying the insatiable libido now occupying his body and mind, almost nothing of John remaining.

Penny was undergoing her own set of changes as John was dominated by his new bodies desire. Penny's entire torso was covered in silver fur now. Penny's hands still gripping her thighs as her body jerked, still in the throws of her ongoing heat-driven orgasm. Her legs almost gave way under her as she released her pussy-juice soaked thighs and grabbed the only thing stable around her, John's large foot paw. Her hands clenching orgasmically as fur crept down her arms. Penny's head jerking upwards, her teeth clenched as she moaned "aahhhhh....aaaAAAHHHH.....HHHRRRGGGHHHHH!!!!", her voice dropping several octaves as it transitioned into an inhumanly animalistic roar. Her pussy growing even larger between her thighs, her labia thickening as her hips cracked loudly, her pelvis widening dramatically. Her skirt began to curl upwards with her widening hips, no longer able to hug her voluptuous form as it began to tear, its waistband weakened from John's claws. The rising hem of her short skirt revealed her extremely tight and thoroughly soaked underwear.

Fully revealed, Penny's abused panties could take no more, her body finally outgrowing them. Her drenched underwear's intricate stitching ripping as the white fabric slowly dislodged itself from her deep in throbbing vagina and voluptuous ass before splatting wetly onto the carpet. As her pussy was freed Penny's nipples turned dark black and grew almost an inch long as they thickened atop her DD-cup breasts. Penny still riding her orgasm knew only the pleasure that washed over her body, the waves seemed never-ending as her now exposed pussy gushed fresh waves of steaming lubricant past her thick engorged nether lips and down her furred legs. Her skirt riding up her body, still hanging onto her wide hips

She was panting as her orgasm finally faded, her pussy still sending small jolts of pleasure through her body making her involuntarily moan. The remains of her pussies ministrations completely soaking the fur around her crotch and a good portion of her legs as well. She almost collapsed again as her afterglow was cut short, her legs shaking. She looked down to see what what happening to her legs, only to realize that her large breasts were in her way, blocking her view of her torso. Moaning in frustration she fumbled with her sensitive mounds, trying to move them out of the way. Every touch of her hands on their firm flesh sent shocks of pleasure into her pussy, her hips bucking as her moans turned from frustration to lust. As she struggled to part her breasts her legs were swelling, thick cords of muscle tensing under the skin, causing her temporary instability. As her legs gained muscle her toes pressing up against the very front of her already tight sneakers. Breathing hard she finally let go of her breasts and tried to wiggle her toes to alleviate the pressure but it was no use, her fur had coated them thoroughly, effectively reducing the available space to zero in the small shoes.

"Oooohhhhhhhrrrghhhh......" she moaned as she reared her head, her feet beginning to crack and grow, trying desperately to catch up with the rest of her body. The pressure was too much! She couldn't take it as her legs shook, her pussy starting to re-engorge as her toes pressed increasingly painfully into the shoe as her feet swelled. She sighed in relief as her growing foot tore through the toebox of the running shoes, separating the cloth from its rubber sole with no small amount of resistance.

Penny's feet spilled out of her size-eight shoes without a moments hesitation. Her socks stretching over her growing toes, the synthetic fabric having a hard time keeping up with her cracking, lengthening feet. Her toes wiggled and curled out of the front of the destroyed shoe as her foot continued to grow, the shoe collar getting tight. Her socks stretched to their limit as her toes punched through the thinning cloth. Penny looked past her breast's large black nipples and was able to glimpse her elongating feet, what she saw made her gasp. Her silver-furred toes were swelling larger and larger as her pinkie toe absorbed into her foot. Her feet were turning her on all over again as she felt her pussy and breasts throb, drool starting to leak from the corner of her mouth. Her feet quickly lengthened and thickened further, greatly widening the rip in the front of her sneakers as the uppers further separated from their soles.

She almost orgasmed as thick black claws pushed out of her large toes all at once, their wiggling length reshaped into something more feral, more lupine. Her pussy was leaking again, the shocks of pleasure too much for her to take as her whole body spasmed. Her feet continuing their outward march as her legs cracked into digitigrade, her body now fully supported by the widening fronts of her feet, her shoes hanging off of her changing ankles as her feet continued to swell, the collar of the shoes becoming painfully tight around her strong taught tendons. The soles of her sneakers were soon completely separated from the top of her shoes, unable to stand against her growing and reshaping bones. The tightly laced upper parts of her shoes and the remains of her socks hung off her feet, the collar of the shoe in an increasingly tight stranglehold around her strong ankles.

To be continued...