Fat Science (Renamon TF WG + Butt Growth)

WARNING: This story contains topics of weight gain and butt expansion related material. If you don't like the following topics, don't read it and don't complain to me about it.



My name is Ryan. I am a scientist and I have a pet monkey as my partner, who I like to call "Jam". He was originally human like me; he would always take me out for ice cream after we got our scientific experiments done. When Jam ordered banana split ice cream, that was when the monkey genetics started kicking in. So one day, I was working with my partner, and I already had an idea in my head to get into shape while experimenting on myself. I already knew what I wanted to turn into; I always loved Pokemon as a child, but since i was aiming for something less mainstream, so I thought of becoming Renamon from Digimon.




Renamon was a fan-favorite to me; a character I was really fascinated with. I never really grew up with Digimon as a kid, but Renamon has to be my favorite character from the Digimon series.

One look at her official artwork and I knew that I loved the character. It's hard to pinpoint what I loved most about her. Was it her soft fluffy tail or those pointed fox ears? Whatever it was, I was determined to become just like her through the miracle of mad-science. Jam and I spent several hours of planning, along with occasional breaks to eat bananas or play video games. I go up to my partner with my potion recipe for the Renamon Im about to become.




"Hey there Jam. I've got the serum all written down on paper. Hope you like it." I say as I pass the recipe to him. "Hm... Yeah, I think could work." Jam said, while smiling happily. "Wanna be careful you don't mess up the recipe though. You know how mad-science has a tendency to create "complications" or other such shenanigans."




"Well, as long as nothing serious occurs or something terrible happens to me, I believe we'll be more than ok testing out this serum~" I replied, seeming very eager to start. "Alright, we'll start right away!" Exclaimed the monkey as he excitedly swished his tail. "Now, let's hobble together these ingredients and make you into a sexy slim foxy boy!" The two of us got to work and started gathering the ingredients we needed. We got them from the lab itself, as well as some simpler ingredients from a nearby grocery store. After several hours of ingredient collecting, we were ready to mix our concoction. The lab-coat wearing simian placed the items on the table as we got to work.




We mixed our potion up in a metal pot, following along the ingredients for our recipe. I was eating a deluxe backn cheeseburger from my favorite fast food place as we were working. The taste was succulent as usual, well as succulent as a greasy burger could be. After munching on it, I walked back to the pot and found that the potion was just about done! I turned to Jam who smiled and nodded. "It's just about ready, Ryan! You're gonna be foxy in no time."




"Awesome! Let me get the vial for our delectable Renamon potion!" I reply to my banana-munching partner. There was a tall empty potion vial in the middle of the table; I grab it and i pour the finished potion into it. I wasted no time as I moved the glass flask towards my lips, while my simian friend watched with anticipation. I then proceeded to lift the flask and pour the potion into my open mouth. I swished the bizarre concoction around and then digested it. Afterwards, I stood there patiently waiting for the transformation to start.




Then all of a sudden, I felt something furry grow in between my buttcheeks and out from my tailbone. I drop my pants to see what was going on down there, and I saw I was growing a tail! I swish my tail back and forth as it was now my very own! Then I felt the soft yellow fur spread up onto my thighs and then to the bottom of my legs. My monkey partner just ooked and watched with glee. The fur then spreaded onto my torso and to my arms. I wiggled my bare feet, watching my toenails turn into sharp light-purple claws.




My shoulders started to tingle as the flesh at the back of them started to stretch and expand. Flesh and bone grew and shifted as a pair of tiny wings started to sprout from my shoulders. These tiny wings became covered in soft vevelty yellow fur. Jam watched in utter delight as I flexed my tiny wings. Soon enough, I felt my legs starting to shift and alter. I found the front of my legs starting to cave in as they took on a new shape. My legs took on a bent-back digitigrade appearance. I felt myself losing balance due to the shape of my new legs, but was able to steady myself with a bit of concentration.




In addition, I felt my face push out into a fox-like muzzle. My nose twitched as it turned from it's usual pink-ish colorization to a charcoal black color. My nose became leathery in texture, as my nostrils grew slightly larger. I found that my sense of smell had heightened to an amazing extent; I could even tell that Jam hadn't washed his lab-coat just by the scent. I also began to grow more fur on my chest and neck, earning myself a big white tuft of soft fur. I stuck out my chest to get a good look at the big fluffy tuft that now adorned it. In order to prevent myself from sweating heavily from heat, I take off my shirt and lab coat, only to find purple fingerless gloves on my arms with a ying-yang symbol sewn onto each one. I was completely naked now and I started walking around on my new digitigrade paws, trying not to trip over and fall. Somehow, I managed to keep myself balanced after a couple of steps.





Jam smiled and looked over our handiwork, overjoyed by my new appearance. "You look great! The recipe looks like it did its job. Best of all, you didn't eat any food before digesting the potion, as request." My eyes opened wide as I abruptly turned to Jam. "Um... Excuse me? You never said anything like that. Heck, I just had a burger before drinking that potion!" Jam started to sweat as the monkey let out a nervous ook. "Oh, uh... Well, looks like nothing bad happened at least!" I grumbled, I had a feeling things were about to get worse somehow.




I let out a small groan, already feeling my belly rumbling wildly. I lay my hands onto it as it began to expand slowly. I walk over to the mirror and looked at myself right away. I couldn't believe my eyes! My butt was beginning to grow slowly, but at an alarming rate! I screamed in fear and ran to my primate friend for help. Why does this have to happen to me!? I thought it was gonna go all well and swell, no pun intended! Jam looked at me as a smile started to form across his face; the monkey tried with all his might not to laugh but eventually broke out into a fit of snickering.




I glared at the laughing monkey as he rolled onto the floor and chuckled like crazy. "Jam this is serious!" I shouted as the lab-coat wearing monkey continued to make light of the situation. "Oh, c'mon fatty! Don't let the weight of the situation get to you." I found Jam's pun to be unhelpful and very unbefitting of the situation. Regardless, my transformation continued with my legs gaining a large amount of flab. The flesh along my legs became baggy as I found them starting to increase in width. My legs became immensely thick as I felt the weight increase starting to affect my rear.




"Are you just gonna sit there and watch me get fatter and fatter?" I yelled, sounding increasingly upset at the laughing chimp. "You're supposed to be helping me, not laughing and making jokes about me!" The monkey just couldn't help himself; he thought it was one of the funniest things he ever saw. Just when I thought things couldn't get any worse, I felt a ton of weight pooling in my rear and hips. My butt-cheeks started increasingly large as folds of flab started to form on them. My butt became extremely massive, bording on downright silly. My hips followed suit and grew much wider. They grew wider and thicker with each passing second; making my rear seem even larger as a result. My appetite even increased a huge amount; my belly rumbled like I havent eaten in days!





I wiggled my large rump around and felt it jiggle around like crazy. I walked to my monkey friend, glaring at him angrily as he was just cracking himself up. My walks were slower than before; with big buns like these, running was practically useless now. "I hope you're happy with what has happened to me." I said. "I'm a big fat pile of lard now and you aren't making things any better."





"Oh c'mon, you can always work the weight off! Besides, I really like this new look." The monkey said as he walked around to the back of me. He then took his hand, hauled up, and gave me a swift smack in the rear! I yelped as my butt-cheeks jiggled wildly from the impact as my rump was left feeling very soar. The monkey laughed, but I was not amused. I angrily raised my paw at him to give him a smack, unknowingly activating one of Renamon's special attacks in the process. "Power Paw!" I shouted as I gave the monkey a very weak punch. The punch did nothing as the monkey continued to stand there and laugh.




After a few moments though, I noticed that the punch did do something after all! The monkey started to increase in weight as fat started to pool in his legs. The monkey's stomach gurgled as it grew much larger. His stomach became large and bulbous as his torso increased in width. He started to grow immensely fat, even fatter than myself! The monkey became immensely obese as his chest became saggy and flabby. The monkey grew rather pronounced man-boobs.





The monkey's hips grew much larger as did his rear. Jam's butt became immensely large as his butt-cheeks increased in both width and size. Several rows of flab now lined the monkey's large posterior. Jam's arms and legs grew flabby as well, as his appendages became lined with several layers of fat. Jam's fingers grew larger as they grew flabby and bulbous. Jam's finger-toes followed suit and became bulky as well.





Jam's lab-coat then started to change shape as the fabric curved and twisted around his body. The sides of his unbuttoned lab-coat started to fuse to each other as the buttons on the coat vanished. The length of the coat decreased as did the length of the sleeves. The coat soon became a tight-fitting T-shirt that firmly hugged Jam's man-boobs. The shirt very covered Jam's fat belly, which stuck out of his t-shirt like a sore thumb. A logo appeared on the front of the T-Shirt that read: "Fat & Proud". Jam's head also started to grow larger and fatter. Jam grew multiple chins as fat pooled on his cheeks. Jam's head became very bulbous a result.





Once the transformation was done, Jam was left as an obese monkey who was clad in nothing in a tight T-shirt. "What did you do to me?! I'm morbidly obese!" Exclaimed the monkey. I snickered to myself as I quickly realized the tables had turn. "Don't worry, lots of monkeys are fat! Just look at orangutans." Jam snarled angrily in an attempt to look tough. "Darn it, change me back!" I shook my head and waddled around to the back of the fat monkey. I took my hand and repeatedly whacked Jam in the rear, causing his bulbous monkey-butt to jiggle wildly. I spanked the obese simian repeatedly while snickering to myself, but eventually stopped after a few minutes.





Jam then proceeded to rub his flabby sore behind while ooking angrily. "Darn it! I'll get you back for this!" The monkey exclaimed as he desperately tried to turn his body around, but only managed to turn his body a few degrees before working himself into a big sweat. The monkey panted and wiped the sweat from his brow as I laughed even more. "Don't worry, I'll work on a way to change us back to our normal weights." I said I threw a lab-coat over my fuzzy shoulders.





"Alright, I'll help you!" I shook my head. "Sorry, but I think I'll do this on my own. After all, I haven't fully forgiven you for not giving me full advice on this project. On top of that, you aren't wearing a lab-coat! Mad-scientist code dictates that every scientist working on a project in the lab must wear a lab-coat." Jam grunted as he tried to pull off his shirt so he could put on a lab-coat. However, the shirt was glued to his flabby torso by his sweat and he was unable to pull it off no matter how hard he tried. "Fine, you win! So, what would you like me to do?"





I smiled and patted the monkey on the shoulder. "Well, you could go grab us some food, though I doubt you would be able to walk that far. Maybe I should get you a rascal scooter in the meantime!" The monkey grunted angrily as he stuck his tongue out at me. "Very funny, ha ha, it is to laugh!" Jam said sarcastically as I got turned towards my work. I wiggled my flabby hips around as my big butt jiggled. It was time for me to get to work! Jam watched from the position he was standing at before. While watching me, the monkey reached around and tried to scratch his butt, only to discover he couldn't reach that far. I felt kind of bad for the monkey, after all this wasn't totally his fault. Knowing Jam, he probably meant to tell me but just forgot. Regardless, we were stuck in this mess now so we had to figure out a cure. That, or find a really good exercise plan!





Many months later, I began packing my things so I could move to New York. My monkey partner managed to lose all of the weight he gained, but not me; in fact, became a hopeless glutton! I could not go anywhere without bringing an article of fatty food with me. No matter how much I ate, I was still getting fatter and my butt was still growing bigger and bigger. I was wearing Jam's "fat and proud" t-shirt, and judging by the smell and the few stains I've made on it, I've been wearing it for a couple of weeks now. Forget about taking it off, because it was practically glued to my torso from all the weight I've packed on!



I gave Jam an angry glare. "I hope you're happy with what you've done to me..." I said to the chimp. "Whatever man, I'm just glad that I'm not fat anymore." Replied the monkey who was reading a newspaper on a rocking chair. Before every page he turned, he licked his thumb. "So that's how it's gonna be from now on? You stay healthy and fit while I'm stuck living the gluttonous life?!" I reply with a bit of frustration in my voice. "Listen fatty, your assets are yours to worry about." He laughed at his own pun like it was the most hilarious thing he said all day. I was really getting sick of all the puns he keeps throwing at me. I just rolled my eyes and continue loading my boxes into the truck. Jam had his eyes fixed onto the newspaper, so he did know pay any attention to me one bit.



I loaded the last box into the truck before saying my final goodbye to the monkey. "Call me when you have the time." I calmly say. I open the truck door and tried to sit up but thanks to my ever-expanding tub of lard ass, I'm not able to get in the driver's seat! Like the lazy fatass I am, I had to sit in the back where the boxes packed with my stuff were. Boy was that fun, NOT! But atleast I'm trading my old life for a brand new one. Jam shed a tear from his eye as the truck finally drives off. And now here I am, making the big bucks as a model for fat furry magazines with my big round volumptous booty earning me fame and fortune in all of the USA.




THE END