It’s been a month since I found the books, the research papers and all the notes tucked away in a box beneath piles upon piles of textbooks found in the corner of my professor’s office. The box itself was dirty and dusty, but the papers themselves didn’t look older than a year or so. Large red ink stamps on the front pages warn any reader of what’s inside, but I didn’t bother heeding those warnings. Besides, if the man behind these papers really wanted them destroyed, why weren’t they shredded? Burned? Ripped up and tossed into the ocean off Castelia Bridge?
Six months ago, something very strange happened. The route that connected Nimbasa city and Castelia city was entirely roped off. Route 4, which was a very trafficked route due to it being the only route that connected the north and south regions of Unova, was closed off to all traffic. No cars, no pedestrians, not even emergency vehicles were allowed to pass through the route. The only road that could connect the northern and southern halves was a crudely made dirt path which connected Nacrene city and Route 14. It caused mayhem, confusion, and overall frustration for anyone who used Route 4 as a work route. Regardless, the government only gave vague non-answers about how they were “working on it.”
Twenty days later, the route opened up again, and nothing was different. Life continued, and the route wasn’t closed again. The closure was never explained.
My university professor, however, had a vague, general idea of what happened. He had a long-time colleague he used to work for who left the university in order to “make a name for himself” in the “real world.” Two weeks later, he landed a government job in pokemon studies and had to stop outwardly expression what he was doing in his job. Fortunately, my professor is a nosey man and did some digging. A week before the Route 4 closure, he told me that for some reason, he moved regions three times in the span of six days, and not only that, he had a partner pokemon that was registered to his plane tickets. A Sylveon.
This wouldn’t be too odd for anyone who didn’t know this man, but according to my professor, he was quite against owning pokemon. He said in his words that he would never, ever have a pokemon of his own, much less one he would call his partner.
Then the closure happened, then a few months later, my professor got a folder of papers addressed to him, explaining all the studies that the strange man did, and how it lead to his own disappearance. My professor was nosey, but not nosey enough to pick up where the man left off.
But I didn’t have that same self-restraint as he did. I wanted to know more.

The papers detailed a strange energy called corruption, which seemed to have incredible, magical properties. It could transform a pokemon, much like a mega evolution stone or wishing star, but with much more…not safe for work qualities. I read all the lewd papers with a blush, at first letting out a laugh at how stupid the whole study sounded, but as the papers went on, I became more and more enraptured by the concept.
The final paper, which was dated a day before the route closure, was on Glaceon, and went into more-than-necessary detail on how the pokemon, when introduced to corruption, would cause humans to turn into blue-balled Glaceons incapable of orgasm. The paper itself felt wrinkled, as if it was dipped in water, then completely dried out.
Suddenly, I had an incredible idea.
I gathered a team of researchers that I convinced to help me, then went ahead and picked up the studies right where they left off. I did a private forensics study on the final research paper to find out that inside the tiny crevices of the paper were drips of sexual fluids. The paper had become soaked in (what I could only imagine being) precum from the Glaceon, then dried.
Using the blueprints found on the first page of the documents, I was able to construct a fascinating mechanism that could absorb this corruption energy from something like the tiny drops of precum from the Glaceon soaked into the research paper. It wasn’t a lot at all, but the document warns that the energy of corruption can spread faster than a wildfire if not contained, so I wasn’t worried it wouldn’t be enough.
Could the ability to turn humans into pokemon really be something in the near future…? And if so, how close did this researcher get to that goal? How did he disappear…?
Once we managed to isolate the corrupt energy, my team celebrated. All of us were ecstatic at the idea that we were so close to a possible breakthrough. All we needed to run the experiment was a pokemon…which none of us had.
We have partner pokemon, but after reading through what would happen to them once corrupt, none of us wanted to put our friends through that. We were going to try capturing a wild pokemon, but there was no changing the fact none of us had trainer licences, we couldn’t buy pokeballs legally, and capturing a pokemon without a ball is very illegal. So we finally landed on adopting a pokemon from the pokemon centre. Again we hit another hitch, there simply weren’t any pokemon that seemed like good candidates for our corruption studies, except for…
“Well…we have a Girafarig, do you want to take him home?”
…a Girafarig, one of those strange pokemon from Johto. It was one of those pokemon that had completely slipped my mind existed, and I felt like there were hundreds of other “more suitable” pokemon that would bring something to the corruption table, but…
We took it back to our lab. We treated it well, kept it fed and respected, before leading it inside the makeshift corruption chamber we made. The chamber, we presumed, didn’t have to be airtight since we would be injecting it through a syringe, not through any gaseous state.
Once everything was prepared, I gave the go-ahead for the corruption to be injected.
Finally, after all that stress, I felt the silence I hadn’t heard in a long time. The eager, silent observing of a test subject.
The Giragarig didn’t seem very phased by the injection. All it did was pace the room for a few seconds, before yawning. Part of me wanted to tap on the glass, hoping that would prompt the corruption to begin.
But when the corruption did begin, it began very, very quickly.
On its own, the pokemon’s thick horse cock started twitching and stiffening under the pokemon’s underbelly. The main head let out a blushed huff, looking under itself, and the tail-head of the pokemon licked its lips, moving down between the back legs of the pokemon and lapping right under the churning balls of the pokemon. The pokemon let out a feral, horny cry, kicking its front leg inwards and arching its back.
One of my assistants warned me that the pokemon’s psychic power was increasing dramatically at an exponential rate, but all I could care about right then was how fascinatingly quickly the corruption was taking over the pokemon. The creature’s eyes began to glow a bright pink, and its cock was huge, poking out of the front legs of the pokemon.
Precum dribbled, then squirted, then shot at giant bucket-loads out onto the floor of the holding chamber. The psychic waves of the pokemon started to become visible, rippling the air and causing the pokemon to glow lightly.
Meanwhile, my own cock started to stiffen in my pants. I cursed myself for putting on my tight dress pants today when I knew I would be studying something as horny as corruption. So, as if I barely acknowledged the fact I was doing it, I started rubbing my bulge, squeezing and massaging it as I stared at the pokemon’s giant, shooting horse cock. If only I had a cock like that…
My cock pushed through my underwear and down my pants leg. The sensation of being squeezed by my pants sends ripples of pleasure through my whole body, causing my back to arch a little bit. I barely hear the alarms being sounded, my colleagues evacuating, the cracks in the thick glass casing of the containment cell.
I look down at myself for the first time since we started. My dress pants weren’t there anymore, but cute jean shorts. My lab coat was still on me, but my suit had somehow reshaped into a cute striped sweater that barely covered my chest, which was beginning to be covered in cream-coloured fur. There was a very, very small part in my mind that shot confusion and panic into my body, which made my eyebrows furrow. Seconds later, my brain forget why I was panicked.
I began rubbing my chest with my free hand that wasn’t stroking my short-shorts bulge. My fat, dripping cock grew longer and thicker, reaching my kneecap. I gripped my cock harder as I could feel my chest growing out into a pair of thick breasts, already starting to leak milk already. Fertility fills my body with warmth, causing my thighs to thicken out and spread as a furry, fat pussy pushes deep inside me.
I let out a long, horny breath. Drool drips from my now long, cute muzzle. I could feel my neck slightly lengthening, and a black shell-like maw formed right around my giraffe-like head. My mind expands outwards, psychic power mixing with corruption, causing my cock to gush a shot of heavy precum.
“Mmmhhh~” I hear a horny moan, “m-mommyy~”
I look down, seeing the hefty, erect Girafarig nuzzling my fat horse-cock and licking the tip. I purr, holding my cock up to the pokemon and not letting anything hold me back anymore. I push into the maw of the tiny pokemon, warmth filling my body.
“Mmh~ that’s a good little one~” I purr, “Drink up, cutie~”
The Girafarig, as if already a professional, takes my whole cock into its throat, guzzling down buckets of my cum as I shoot effortlessly into my new, horny little one. The Girafarig’s cock starts shooting on its own, twitching and throbbing, the pokemon’s belly growing larger and larger, full of its momma’s milk.
I huff, rubbing their head as I slip my fat horse cock out of their cum-filled mouth.
“Mmh~ That’s a good girl~” I smile, “Mommy’s gonna go find you some new friends, okay?”
“I-I wanna help too!” The Girafarig huffs, “Let me find my siblings~! They’re hiding in the lab hehee~”
“Oh, are they~?” I smirk, my nose picking up the scent of humans scattered around the lab. The lab has already automatically sealed everyone in, letting me easily pick them all off. My cock throbs, ready for my new clutch of children~
I rub my belly, warmth filling my body as I sway my hips through the hallways. Corrupt musk billows out of my pussy, trailing into the rooms and drooling precum from my cock along the floor of the hallways. My nose picks up the scent of a human hiding in one of the storage closets, but I could feel their minds already slipping. Their cock already slipping out of their dissolving clothes, fattening and growing thick and large. Once I entered the closet, my glowing purple eyes looming over the cowering transforming human, the transforming human cums, shooting over and over and over in my presence.
“Now now~ Hiding from mommy, hmm?” I giggle, “Playing hide and seek, maybe?”
“Hahh-ahahhhahh~~”
They can barely speak as their muzzle grows white and brown. Two large horns grow out their scruffy hair, which also grows thick and green, growing down across their back while their whole body shifts forwards. Their cock grows larger into a horse cock like mine, while their hands and feet turn into somewhat useless, albeit cute, hooves. Their body falls forwards as their fat cock sprays with more cum, covering the whole closet in their seed, finishing their transformation into a fluffy, horny Gogoat.
“Now…” I huff, still stroking my hefty cock, “Mommy is looking for your sister. Where is she~?”
“Nnyyh~” The Gogoat arcs his back, his balls churning, “sh-shee~ she’s in…~ In the breakroom~ she’s hiding in the breakroom bathroom~”
I smirk, of course, she’s in the bathroom. Probably ready to check her transforming body out. I walk through the lab, gently waving my hand any time an emergency blast door shuts, causing it to open for me as if the computer couldn’t help but bend to my will. Once I come to the bathroom, I smell my next child in the boy's bathroom.
My hand gently touches the boy sign, transforming it into a girl's washroom, before strutting in.
“Oh honeyyy~” I call, “You’ve been in here for so long! Are you okay~?”
“H-hah!!” The male human stumbles back, “G-get away from me!”
“What’s wrong, honey~?” I smile, moving up to him. The blue tile has morphed into pink, suggesting a feminine bathroom, but the urinals stay the same. Of course, it’s not like girls don’t have hefty cocks~
My musk trails into the humans brain, already morphing it into what I desire. The human moans, their cock throbbing.
“M-mom I- I told you I don’t need your help…~”
“Oh hoh~ Are you embarrassed about dressing yourself up?” I smirk, snapping my fingers and dissolving all their clothes off. A coating of fluffy white fur starts to grow over their body and their cock starts to grow larger, “I’ll help you with everything you need~”
A fluffy tail starts to wag as the “human” blushes heavily. Their muzzle growing out and a wet, furry pussy drooling against their fattening thighs. Their cock fattens out into a canine knot, reddening and becoming intensely sensitive. Her human body has become a beautiful anthropomorphic Furfrou.
Once everything has grown in, I rub my hands down the sides of her body. This causes her to moan, leaning back into me, my breasts hugging their soft head.
“You always do get shy when mommy isn’t around, don’t you~?” I smile, my hand gripping her cock, “Don’t worry, I’ve got you~”
“Nnhh~ Th-thanks mom~”
I start pumping her cock, squeezing and filling her mind with corruption. I turn her around, sliding her cock between my thighs, before letting her large, knotted shaft push right into my exposed pussy. I bite my lip gently, feeling my daughter’s fat cock deep inside me. Within seconds, she’s already thrusting and humping into me, her knot slipping gently into my folds and milking her.
“Go on, honey~” I smile, “Cum in me~ Release your stress~ You’re safe~”
“Haaahhh~~” She moans, “M-mommyy~!”
I hug her tightly, pushing her whole knot inside me and letting her cum fill my womb. I could already feel my womb filling with pokemon eggs, my belly inflating out and my pussy drooling with an eager need to lay. My Furfrou daughter pants, her cock still permanently erect even after she’s cum gallons of seed into me.
“H-hhhnnh~” She gently moans, hugging herself, “Th-thank you mommy~ I-I feel better now~”
“Good girl~” I lean down and move her head to tilt up to me, kissing her passionately on the mouth. My hand slides down to her butt, squeezing it. My cock throbs, already eager to fill her with eggs too. It didn’t matter if she was my daughter, she would make a perfect mate~ My mind fills with ideas, maybe setting up a marriage between the two of us. How hot would that be~?
But I’m getting ahead of myself. I lick my lips, looking up at the direction of the exit of the lab. The whole place has automatically quarantined itself, but that shouldn’t be much of a problem for me. I could open the doors and let humanity bend down to my maternal, corrupt power~
Then again, it’s also a good idea to keep my children and me inside here, growing my corrupt empire and really learning how this corruption works. I rub my cock, feeling it throb and twitch, eager to stuff someone and fill their whole bodies full of my children. Meanwhile…~
I gently push my Furfrou daughter against the tile wall, “Now, it’s mommy’s turn~”
“Haah~! Yes mom~!”
With a tight grip, I push my cock deep inside her fat, furry cunt, stretching her doggy insides out and bulging her belly outwards. My fertility magic pushes deep inside her whole body, fertilising her womb with barely any precum gushing into her. My thrusts are powerful and intense, lifting her paws off the ground and turning her into my very own condom. My long, passionate tongue pushes into her mouth, kissing her passionately and flooding her womb with my corrupt seed.
Once I was done, I gently slip her down off the wall, but her legs barely work anymore, collapsing into the puddle of cum she made after I speared her womb. Her doggy cock still spilling and shooting out bucket after bucket of cum. The sweet scent of her cum fills the bathroom, making my own cock throb again. Perfect. Everything is perfect~
I growl and pull my cock out, licking my lips and letting my cum-filled daughter rest. After all of this, my lab coat is still comfortably around my body. Part of it is soaked with cum and corrupt energy, but that just makes me hornier than I already am.
And with that, I exit the bathroom, licking my lips, ready to see if this whole lab can handle my intense, perfect corruption~