Waking Up As A Test Subject

Story by Joshiah on SoFurry

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#43 of Transformation Stories

You never know when a transformation will happen, and in our stories, no drink is ever safe!

In this latest commission for Shade The Kitsune, a mountain cheetah by the name of Kenta wakes up tied down to an examination table, and finds a hose near his muzzle. He can only imagine what he's been forced to drink, but he begins to get a clue of it as a mysterious doctor shows up. His explanation does nothing to settle the feline, and only mere moments pass before Kenta finds his body undergoing a set of changes he can't control!

The doctor finds the display a little too arousing to simply watch, and poor Kenta has nowhere to go, and no choice in the matter as his throat is repeatedly stuffed...

As always, read, comment and enjoy!


Waking up somewhere unfamiliar was never a pleasant experience.

It was worse still when you woke up strapped to a bed, with a small tube hovering right over your face.

"O...okay...I know I didn't drink that much last night..."

Kenta was well beyond confused. He didn't have any recollection of what he was even doing the night before, and his head was immediately washed over with a dizzy spell as he tried to look around the room.

The scope of the area was difficult to discern. Kenta could only see darkness in the distance around him, but somehow, the room felt entirely small, with the number of tables and instruments surrounding him. His body was strapped down to a small cot, as if someone didn't trust him to behave when he was released, and a large tank sat to the side of his bed, completely black on the exterior to prevent anyone from seeing what was on the inside.

The tube over his muzzle was connected right to it, and the very end of the instrument was still dripping onto Kenta's lips. With a sudden loathing, the unique, mountain cheetah gave his lips a quick, curious lick, and picked up hints of something artificially sweet, like a poorly made soda.

Green liquid fell in tiny, patience drops from the end of the tube as it began to retract into the tank. Kenta couldn't have known just how much of the stuff he'd consumed, but he had a bad feeling that he'd been nursing the fluid the entire evening, given that he didn't have any memory of going to bed, much less walking down into a dark, hidden room.

That lack of recollection kept Kenta nervous as his bright, cyan eyes bolted back and forth around the room, trying to figure out who was manipulating the world around him, a world that had become entirely too small for his liking.

"Who said you had anything to drink last night?" a voice asked, though it was still cloaked by the seemingly infinite darkness that spanned around Kenta. The low, quiet echo that followed on his voice was a chilling one, leaving Kenta to wonder just how expansive the room really was. "Other than the serum, of course. You couldn't get enough of that."

Kenta leaned up against his restraints, though they kept his body tightly pressed to the firm, uncomfortable cot. The sheets itched against his fur, and the hard surface kept his back tense as leather straps held steadfast against his straining wrists and chest. "I sure don't remember enjoying it. I don't even remember drinking it!"

"I've heard that a lot of people have memory loss as a side effect when they drink too much," the voice explained, though it still carried no face with it. "I'm sure you just overdid it a little bit."

"I don't remember overdoing anything either, pal. Care to explain how you got me down here in the first place?"

It wasn't easy, but Kenta was doing everything that he could to try and act calm and collected. In truth, he was trembling against his bondage, having woken up in a dark, hidden room with a dripping tube over his face. The thought of being kidnapped was an unnerving one, and it wasn't easy for him to maintain an angry, powerful stance when he couldn't even move.

"I'll be happy to share a few of my secrets with you, Kenta, but there are some I'd prefer to keep, as well, and that is one I won't be giving out anytime soon."

" Great. Then perhaps you'd mind letting me off of this stupid cot and giving me a few bucks so the nearest taxi can take me to the police station, so I can have your ass arrested?"

"If you're going to react like that, I'm afraid I'm never letting you off of that cot," the voice assured, "Though, if you're willing to cooperate a little bit, perhaps I'll give you back some of your basic freedoms."

To be kept in such a manner was frustrating to Kenta, who was still too incensed to have noticed that his clothing was all missing. Every inch of his body was bare fur, down to the thin, warm slit at the end of his sheath, and his clothes weren't on any of the tables that sat around his cot.

"You could start by giving me back my clothes."

"By the time we're done here, you won't be needing those anymore," the voice explained, and as it did, Kenta flickered one of his long, sharp ears to a sound that seemed to be coming up from behind him. His right arm tensed, and veins rose up to the surface, pressing against the soft fluff of his fur as he tried to reach up and swing, but he never would have been able to reach the vulpine that finally stepped out of the shadows. "And I doubt you'll want them, for that matter."

Kenta huffed as he watched a shorter man walk by, clad only in a tight pair of black jeans and a form-fitting t-shirt of white. A trio of tails followed him from behind, bouncing gently with each step that he took, and sharp ears stuck up from the back of his head, reaching for the ceiling and picking up every sound in the room. "I wouldn't say clothes are the first thing on my list of priorities right now, but they'd be a nice gesture, buddy."

A confident, nearly mocking grin was shown as the marble fox looked back over his shoulder and cast the gaze of a shimmering, silver-blue eye upon Kenta. "I wasn't kidding, y'know. Give it a couple more minutes, and I'm sure you'll have forgotten all about clothes. If that stuff works well enough, you might even forget your own name."

It was too late for Kenta to try to induce vomiting, and he couldn't think of a way to manage, regardless. His entire body was bound, including a small strap of leather across the middle of his torso, just in case he were to try and wiggle free. It didn't seem that there was any positive outcome for the mountain cheetah, but he tried clinging to the last, dwindling fibers of optimism that remained as he narrowed his eyes upon the marble fox, their cyan glow tinted with a hint of rage.

At that moment, the best he could do was wait and see what kind of changes were in store, and he got the impression he wouldn't have to wait long.

"Tell me, Kenta...what do you know about transformation chemicals?"

"Enough to know that I'm not going to be happy about this."

"Heh. I think you might be a little shortsighted in saying that, but then again, you are the one strapped to a table," the fox replied, as he turned and reached under the cot. "I suppose it might help if I gave you at least a little bit of wiggle room."

The fox was smart enough to release the leather straps around Kenta's ankles, knowing that he wouldn't be able to stand up from the cot with the rest of his body so firmly strapped down. In truth, it was a heavenly release for Kenta, who managed to avoid going into a panic when his footpaws and ankles could finally move freely again. "That is a start, but it's not answering any of my questions, and it certainly isn't getting me any closer to being off of the table!"

"All in due time, my friend. Patience is a virtue, after all."

"Yeah...I'm pretty much all out of that. How about you get t-to...ex...explaining?"

Kenta's ears went flat to the sound of his own voice as it suddenly climbed up the scales, moving several octaves toward the ceiling. He would have covered his muzzle, but he couldn't reach it with his bound paws, and his cheeks were already filling with a shy warmth as he felt an unusually strong heat growing throughout the rest of his flesh.

"I don't think I'll have to explain much when this is all said and done," the fox suggested. "But, since you at least tried to be polite, I'll tell you this much: My name is Shade, and I know you're not feeling too special right now, but I assure you, you are, and you're damn lucky, too. You're the first person who gets to try the perfect version of my little serum, here...meaning that there won't be any side effects for you to worry about later."

Side effects? Sounding like a girl is definitely a strong side effect, Kenta thought, not wanting to open his muzzle to reply. But this serum is obviously doing something weird to my body...I feel like I'm on fire!

The overwhelming heat coming from within the body of the mountain cheetah was no mere coincidence. As his voice continued to climb in pitch, he could feel warmth spreading down to the very ends of his every last digit, and in the pit of his stomach was the oven that supplied it all. He couldn't explain and didn't understand exactly why it was happening, but as his toes curled from the strangely ticklish sensation, his eyes caught a glance of something rather odd.

What would normally have been light, tan fur was quickly turning white at the ankle, with a black gradient over his footpaws.

"Looks like you're a little concerned. Don't worry; you're not getting premature gray fur. Your body is just accepting the serum...it's all quite normal, really."

Shade's words didn't do anything to comfort Kenta. "I wouldn't call any of this normal," he protested, knowing that the rest of his day was going to be anything but. "What the hell have you done to my fur?!"

"It's not just your fur, Kenta."

"..."

Shade could simply feel the glare upon his skin, but he only chuckled at the thought of it. He didn't seem to feel even an ounce of remorse about what was happening, and was even enticed by the sight, as he watched the fields of darker fur turning to a stark, pristine white as they crawled up over the naked form of the mountain cheetah. Under the fur, muscles began to shrink just slightly, losing some of their strength and giving Kenta a terrible feeling in the pit of his stomach, akin to the full body ache of a powerful influenza.

"W-what...what is this? Feels like I can barely move..." Kenta muttered, trying to keep his voice as low as possible, but the change in pitch simply couldn't be covered up. He was barely straining against his bondage any longer when he glanced down between his thighs to see the shape of his sheath changing just slightly, becoming a little narrower to compensate for the new shape of his manhood. Inside of his body, he could feel that length shifting, becoming just slightly thinner, but a little bit longer, as if to compensate.

He didn't know that it was the result of his body turning almost entirely vulpine. He could feel the bones in his muzzle melting down, as if they were little more than the wax around a lit candle, but he was going cross-eyed just trying to see the change, as the bridge grew longer and thinner. Blankets of white were already filling in across his torso and moving up to his neck, turning him into the vision of a freshly fallen snow upon the plain, dry cot.

"Much better...much, much better! I think this is a far more appealing form for you, Kenta!" Shade cheered, as he watched the very last of the black tint filling in upon Kenta's pawtips and ears. His whole body carried a sharper appeal to it, from the tips of his long, pointed ears down to the end of his tail, which had grown out fluffy in the process. A small fluff of black hung around the tip of the tail, as if someone had dipped it in an ink reservoir, to use it as a writing implement.

Shade couldn't have looked much happier with the final outcome, but Kenta wasn't at all convinced that the mad doctor transformed him just for the sake of having another fox to hang around with.

What concerned Kenta, however, was the fact that he could feel his frustrations with the marbled fox fading away, as if he were accepting of his new position in life. He could feel a flower of content budding within him, and he didn't know how to smother the bulb.

"Your gaze has softened quite a bit, Kenta. Are you finally warming up to me?" Shade asked, giggling at his own joke. "Or, with this new body, do you find that you aren't capable of such emotions?"

"I'm sure I'm very capable," Kenta argued, though there was no strength behind his voice. There was only the mildest hint of frustration, bordering on a playful feeling. "But...I...I don't really feel that upset...w-why...why don't I?"

"That would be the second effect of the serum. What good is a potion that turns you into a feminine little foxy...if you're still going to hate me for it?"

It was true. Kenta no longer felt any anger at Shade, and couldn't even fathom hating him. It was a weird thought to have, after how determined he was to break free and drive the kitsune into the ground, but instead, there was affection for Shade growing within the pit of his chest, and it kept his mind off balance as he tried to reconcile the fading of one feeling, and the coming of another.

His mind was still sharp enough, however, to realize that there was at least one more ulterior motive.

"...I'm still naked, Shade..."

"Yeah, and?"

"And you're not wearing a whole lot..."

Shade grinned, licking one of his fangs as he did. "Nope."

Gulping, Kenta gave one more uneasy wiggle against his leather straps. "What...what do you really want from me, Shade?"

"I want plenty of things from you, really. First and foremost, I wanted a subby little companion to keep by my side," he explained, "But furthermore, I wanted a sweet, pretty little arctic fox to get me off this evening, and, well...it's easier to make one, sometimes, than it is to find one."

"...Guess I can't argue with that logic, but do you really think I'm gonna do it so easily?"

Shade was already pulling his pants down from his waist, to show off just how confident he was in his success. "If the serum worked, and you ever want a cure for it, I think you'll do exactly what I want you to."

Kenta knew from the beginning that his right to make a choice had been stripped away. At the start, it infuriated him, but as the serum continued to pump through his veins like blood returning to the heart for oxygen, his personality softened up just as much as his body had, and though he didn't fully accept the thoughts yet, he could feel perversions creeping into his mind as Shade dropped his jeans to the floor and stepped right out of his boxers. Shameful as it felt, Kenta's eyes were drawn immediately to the bright, pinkish tip of the vulpine cock that was growing out from Shade's sheath, and though he would have fought it with all of his might only an hour earlier, Kenta felt his lips salivating...

...And he finally narrowed his eyes, before he licked them.

"I'm all ears, Shade."

"You do have a cute, sharp set of ears, but those aren't what I'm worried about," Shade admitted, as he walked around to the edge of the cot. His coat was allowed to drop to the floor as he shrugged it away from his shoulders, and with each step, more blood flowed to his crotch, pushing inch after inch of his tapered length out from the orifice, until it was bouncing with his every pulse, only inches from Kenta's cheek. "It's your lips that are on my mind, my darling little femboy, and I dare to say that they look positively soaking wet."

Shade didn't wait for a reply to get a feel for that moisture. He drew the very tip of his flesh along the side of Kenta's cheek like a pencil, trailing it up until it he felt the wetness upon the arctic fox's jowls. Precum mingled with saliva as Kenta instinctively opened his muzzle just slightly, and his long, flat tongue curled around the end of the shaft, acting without having to be ordered; his mind was already completely falling prey to the serum.

"I knew the serum would make you pliable...I didn't it would make you so eager!" Shade was grinning from ear to ear as he watched the tip of his cock disappear inside of Kenta's drooling lips, and the newly transformed arctic fox looked up at Shade with a certain desperation in his eyes, as if he wasn't sure if he was doing this out of desire, or desperation. "F-fuck, boy...slow down! You're gonna make me blow my load way faster than I meant to!"

Desire won out for Kenta, as he did just manage to slow his pace a little bit. He was seconds from taking the whole of Shade's cock down into the back of his maw and right into his throat, but he never quite made it that far, as he hinged his actions on Shade's every word. He simply held still as the marbled fox pulled back for a second, and a long, drooping strand of precum hung between each end of the lewd act.

It was such a sight that Shade opted against taking his time; Kenta wasn't going anywhere, and he could always work up another batch of seed for the eager fox.

"Now...you're not going to waste a single drop, are you?" he asked, though it was mostly in jest, as he stuffed his cock back into the mouth of the bound vulpine.

Kenta barely had a chance to breathe. "Hllk! Mnnf!" he groaned around his mouthful, and whether it was protest or encouragement, Shade couldn't know, and didn't care. His only concern was the feeling of saliva drizzling over each inch of his thick, full member as it probed over and over again into the muzzle of his new toy. He was almost tempted to release Kenta's arms, seeing how eager they were to get a feel for the rest of his package, but for now, Shade was happy to test his abilities without the use of his paws, and found that Kenta was more than capable. His tongue was able to trace over every bulging vein with the kind of ease that could only be achieved through years of practice, and his muffled growls of delight at the taste rumbled through Shade's flesh, right into the base of his crotch and down into his sack.

That same rumbling, perhaps, was the linchpin that finally let Shade release his seed, as he gritted his fangs together and tilted his head back. His claws dug deep into the headfur of his trapped companion as he held on tight, forcing Kenta to stay in close and accept the whole of his flesh, all the way up to the emerging knot. "Fuck...f-fuck yeah, Kenta! You're such a good little cock slut...you h-hungry for this cum?" he asked, growling lowly from the back of his throat as thick, heated streams of semen poured right into the maw of the transformed vulpine. He swallowed as quickly as he could, trying to keep up with the impressive volume of shade, who threw his head back in ecstasy as the gulping muscles milked all of the cum that he could offer straight out of his flesh. "T-that's it, baby...swallow it all down! Yes!"

Nearly whimpering in his struggles, Kenta held on the best that he could. He couldn't move his head away from the rod that was pounding into his throat, and he could already feel the warmth of spilled ejaculate pouring into his gullet and down into his tummy as it painted his entire throat white. Tiny, mingled streams of seed and saliva began to drip from the corners of his muzzle as he held on, and finally, when it seemed the last trickles were pouring upon his tongue, Kenta was able to breathe again, when Shade finally pulled back.

"Gah...ahh... f-fuck, Shade...how long had y-you been saving that one?" he asked, his eyes half-lidded from his struggles as more cum spilled from his lips and trailed down into the fur upon his chin.

Shade was clearly proud of himself, as he watched his mess spilling down and marking Kenta as his own little pet. "Not that long, really...you're not the only one who's been experimented on, after all."

That thought was slightly haunting to Kenta, who swallowed down the last of the sticky mess in his maw and let out a sigh. "Have I done enough to be released, then...?"

"Release?" Shade asked, with a quick, sarcastic chuckle. "After a performance like that? You're not going anywhere for a long time, Kenta...you can count on that."

Perhaps, such a thing should have worried Kenta...but instead, he felt the very end of his tail beginning to pick up in a quick flicker. Shade was going to keep the femboy fox around, and at first, Kenta was scared of the prospect of what other experiments might be run on his body, when all was said and done.

Now, he couldn't wait to try every last one of them.