“Khh dammit..” Casey groans as he slips behind a nearby wall, holding a hand to his mouth as he presses himself firmly against said wall. Trying to hide in the shadows as a group of Foot mooks run past his location, looking down towards the briefcase he had nabbed he grins slightly. Then looking over to the wound in his side. It didn’t feel too deep, but it still hurt like hell. For now he knew that he didn’t need to worry about it, for now he had to focus on getting the hell out of there first. Hefting up the briefcase and his gear he checks the hall once more before running forwards. “Okay.. Turn up ahead should be the last one, then I can make a run for it.. Not sure why the guys need this specific thing so much.. But I know they’ll be able to do more with it than I could.” He chuckles slightly to himself as he hurries up. Right up ahead he could see the exit to the lab, if he was going to show off now was the time. Sprinting up to the door he slams into it full force, throwing the doors open as he lands on the other side.


“Well could have tried a bit harder! Best of luck next time!” He mocks, though hurrying off to get away he slips into the sewers as fast as he could, knowing he could lose any trace of the Foot there. Once he is in a safe situation he takes a moment to relax, checking over his body once more with a soft sigh. Maybe he was cutting it a bit close.. Nah, he had to keep up with the turtles no matter what. Giving a shake of his head he pushes on, the turtles would not be back until a few days later. He had what they needed, and for now Casey just had to keep it safe until they got back. Upon arriving back at his apartment he sets the briefcase down on the dining room table. Frowning a bit he rubs the back of his head. He knew he shouldn’t be messing with this kind of stuff, but at the same time he had to admit. Casey was incredibly curious to know just what was in here. Especially coming straight from one of the Foot Clan’s secret labs. He could only imagine what weird sci-fi bullshit was on the inside.The thought of it makes him chuckle a bit, giving a small shake of his head. Like he’d know what to do with it, Casey just shrugs it off and heads towards the bathroom. 


Stepping inside he starts to undress, slipping his clothes off, doing his best to not agitate the cuts and bruises across his body. “Maybe I should start asking for some kind of payment for helping out.” He says mostly jokingly, he didn’t mind helping out the others, and doing good by the city. But at the same time he was running out of medical supplies pretty quickly. Cleaning up he washes off all the dirt and grime from going through the sewers as well. While it didn’t bother him he didn’t want to worry about making any of the wounds worse. Letting out a small huff, and rubbing the back of his head as he climbs out of the shower he wipes a towel around his lower half as he grabs some cleaning and dressing supplies. Making his way out of the bathroom Casey looks over towards the briefcase again, tapping a foot against the ground as he frowns.


“Well.. Maybe just one look wouldn’t bother, not like I’m going to mess with it or anything. He reasons to himself, after all he knew how this kinda shit usually worked. He wasn’t too smart, but it wasn’t like he was stupid or anything. Just shrugging it off with a grin, he wanted to get a good look at the thing after all. Kneeling down in front of it Casey laughs a bit to himself. “Oh is this all you got?” He questions eyeing the simple lock on the case. “For a bunch of high tech guys you all really don’t seem to care about security.” He chuckles again, slowly picking at the lock before finally it pops open. On the inside is just.. A singular vial of green, glowing liquid. “Huh? That’s it?” Casey says, picking up the vial, giving it a good look over with a frown. He had seen things like this before, but never just one vial. He shakes his head, once again knowing that he had no way of knowing where to even start with that line of thinking. Setting it down he starts to get to work, cleaning his wounds first as he fails to notice that vial, now placed on its side slowly drips into the bandages next to him. 


Once he is done cleaning the wounds he grabs the bandages and steadily starts to wrap it around his body. The green liquid seeped slowly into the wound into his side. Causing Casey to gasp and grit his teeth. “S-shit!” He exclaims, pressing against the wound for just a moment. Looking down towards the green tinge the bandages held he quickly started to unwrap them. Cursing under his breath as he tosses them off to the side, only to see that.. The wound was gone, fully healed in fact! “Huh? Wait, is this some kind of.. Weird healing thing?” He looks over to the liquid again, and then to the rest of the bruises across his body. There was nothing missing from the vial.. Maybe if he just used enough to clean himself up he could get the guys to make more, perfect ways to help them, and himself. Dabbing a cloth in the liquid he runs it across the rest of his body, watching them heal up almost instantly. Proud of himself he laughs, and stretches. “Well I think that is that~” He says making his way upstairs to his bedroom, getting dressed again he lays down. Drifting off almost instantly as he slips off into sleep.


Groaning softly as he shakily starts to come to Casey finds himself breathing a bit heavier than normal. Looking down, and over his body his mind slowly slightly after just waking back up, but he could feel a faint pressure across some areas of his body. Groaning as he finally starts to fully come to Casey lifts the blanket off him, staring down at his nightwear. The first thing that caught his attention was how damaged some of the bits of clothing were, tears and holes across the sides of his pants and shirt, and through them he could see.. Something? “What in the?” He questions picking himself up just a bit more as he tosses the blanket off of him to try and get a better look. At whatever was underneath, but doing that only fills him with more confusion, pausing and just staring for a few moments. “W-what?” Is all he’s able to get out, shakily reaching a hand down as he runs his hand along the side of his body, touching the patches of fur lightly.


It took awhile to really process just what he was looking at, well he knew what he was looking at, but it felt impossible. Unsure of where else it could have spread, Casey quickly jumps out of bed, stumbling down the hallway as he tries to process what was going on. Turning on his heels and into the bathroom Casey lets out a small groan, still feeling that dull throbbing through his body. “D-dammit, did that slime cause this?” He grumbles, quickly ripping off his shirt, watching as that fur already coating small parts of his body it slowly starts to spread over the rest of his body. “You’ve gotta be kidding me.” He growls under his breath, he knew it was his fault of course. He shouldn’t have used that weird mixture, he shouldn’t have opened the briefcase.. But despite that he had to admit, the changes felt rather good. As the fur creeps across his legs, moving towards his inner thighs a small shutter leaves his body. “H-hff… Oh fuck, what is this feeling?” He groans out softly, biting his lip softly as he pauses. Reaching a hand down he slowly starts to work his pants down, all the while feeling that pleasure growing, and growing.


Before he can remove his pants however his body suddenly swells in size. His fattening feet tearing through his socks all while his body continues to get hotter. He blushes without even realizing it, lightly rubbing and cupping his swelling nuts with a few light squeezes. Casey could feel his cock flex against his palm. The pleasure coursing through his body makes it hard to focus on anything else. He had to deal with this right now, no matter what. His hand moves up from his nuts, gripping his shaft softly before quickly starting to pump his cock. With every little pump the changes seem to spread further, the remains of his pants soon being destroyed by a quickly growing tail shredding through the remains. He only caught a small glimpse of it out of the corner of his eye. Looking over with a small grunt of curiosity. All while jerking himself off his new tail thumps and sways in pleasure, that massive rat tail dragging across the ground as starts to walk and pump. Every step only seemed to make his new paws grow larger, slapping wetly against the ground. He could only think about how much more he needed this, he needed more pleasure, to get larger.


Stepping out into the living room he spots that familiar looking vial still resting in the briefcase. A small huff leaves his mouth, picking it up without another thought he tilts it over. Quickly pouring the rest of the vial all over him. Almost right away he could feel those changes surging again, the fur spreading faster, and faster. A strong, musky scent pouring off his body, taking long deep breaths of the stuff only seems to make him harder. His cock leaking as pleasure courses through his body. He couldn’t focus on anything else, his free hand dropping the vial and he starts to rub the liquid into his fur. Feeling it soaking up into his body. The fur spreads faster as his face twitches slightly. "G-grrrlllffff.." He groans out, tilting his head up slightly while his face starts to slowly push out. Growing longer and more pointed, nose merging with his upper mouth, turning smaller and pink. Growing sensitive as his own scent fills his nose. Causing him to moan and groan hotly. 


The new rat man closes his eyes, lifting one of his arms he shoves his snout into his pits. Taking long, deep huffs of it. Breathing in deeply as he strokes faster. Chattering like an animal he can feel himself building to an orgasm quickly, he was right on the edge, he just needed one last pump. Everything almost seems to slow down around him. While there was no going back he could feel like this one last pump would be the end of his humanity. But at the same time it felt too amazing to just pass up. Casey needs this, so as he thrusts into his palm he feels it all boil over. Blowing ropes of cum across the table in front of him Casey lets out another moan, much more animalistic in nature. Fully giving into his lust, leaving him panting heavily as he looks over himself. "F-fuck.. have to admit, I look great~" He says chuckling to himself as he makes his way to the full body mirror he had propped up against the wall. Flexing and posing as he got a look at just how built he was. A bit unexpected but with this no doubt he'd be able to keep up with the turtles now.