John was a big fan of RWBY. He even had tickets to RTX with his girlfriend. Unfortunately, their cosplays were far from finished and RTX started in a couple hours. They did buy a backup just in case this happened. John’s girlfriend Sam walked in with two glasses filled with pop.

“I’m going to go put the stuff in the car. Your cup is on the left.” Sam said putting down the drinks.

“Thanks,” John said. “I gotta do one last thing before I drink it.” The two went to do their last tasks and John picked up his cup as his girlfriend walked in. “Well bottoms up!” He said.

“Wait John! That was mine!” Sam said trying to stop him but it was too late.

John turned around to look at Sam, her eyes went wide watching his blonde hair turn red. “Shit… well, it’s no big deal. Pyrrha is a really cool character so I’m not mad.” He said as his brown eyes turned green.

“Yeah…but I don’t wanna be Jaune.” Sam said sulking a bit. Sam watched her boyfriend’s peachy complexion fade into a pale white. His hair grew out turning soft and cascading down his back. A gold circlet formed around his head and gathered his new hair into a ponytail. His nose shrank and his chin rounded to a point.

John’s body started shrinking at this point. His arms start turning feminine but stayed muscular, well toned. His figure started slimming down, his waist shank in as his back readjusted his balance. His thighs and ass swelled but only a little since he aged down to seventeen. A blush grew over John’s face as he prepared to go fully female. A hole opened up and quickly pulled his testicles into his body. They morphed into ovaries as Fallopian tubes grew out, connecting them to his new womb. His penis started getting pulled back into his body as it sealed up. It got smaller and smaller, becoming his clitoris and making him fully female.

“All that’s left is my clothes.” John said with her new voice. A gold necklace covered John’s neck as gloves covered her hands and forearms. His shirt started hardening, turning into armor. It tightened around her body pushing the remaining fat into her new breasts which became visible thanks to the opening in her breastplate. Her pants shank and became a red skirt with a belt, wrapping around her waist. A small symbol formed on the belt with a shield and spear. Her shoes became red and turned into heels. It crawled up her legs becoming gold and hardening into armor for her legs. John stood there, now Pyrrah Nikos. Combat ready.

“Alright, now I have to become the boy.” Sam said uncorking her serum. “Umm… does it hurt to change gender?” Sam asked. She had always picked a girl when cosplaying, even when they used the serums.

“No, if anything, it feels really nice.” Pyrrah said to her. She stood watching Sam as she slowly drank her serum. Sam’s brow hair turned blonde and shrank into her head. Sam started get taller as her brown eyes turned blue. Her body started bulking up becoming more manly but not as muscular as the Amazon next to her, her breasts shrinking back into her body. Her hips grew wider as her body squared off, her shoulders getting broader. Her ass and thighs shrank as her feet and legs got bigger.

“This isn’t that ba-!” She started to say before a warm feeling washed over her. She rolled down her sweat pants to see her clitoris pulsing, getting bigger and growing outward. Two orbs peaked out of her vagina, her ovaries had moved out of her body and started changing. The grew bigger and became testicles. Her womb disappeared as her vagina sealed itself. Sam reached down to her new appendage and touched it. She let out a small moan as it still grew in her hands. She started rubbing it as it reached six inches long, the testosterone flooding into him as he soon climaxed as a full male.

Sam huffed as he looked down at the mess he made. “I’m sorry… I didn’t think I would…” he started to explain.

“Don’t be, it was your first time and you were curious. The testosterone didn’t help either.” Pyrrah said watching Sam’s clothes change. His shirt turned into a black hoodie with a bunny on it. Armor grew on his chest and arms while his sweatpants became jeans. Sam stood there now as Jaune Arc. “How does it feel to be a guy?” Pyrrah asked.

“Weird… I don’t have as much weight on my upper body anymore and having a penis is… weird.” Jaune said checking out his body. “Anyway, we gotta get going or we’ll be late for RTX.”