Try the new AI-powered Infinite Story.

It's a Swell Life

Marie quickly picked up the empty bottle and read it over. 'Male to Female formula.' Marie ripped the covers off of her sleeping boyfriend just in time to watch him change. All he wore were boxers so she could see most of his body shift to a woman. The hair on his arms and legs receded as his legs grow a bit longer. His butt rounded out and his hips thinned up. Marie grabbed her boyfriend Jack by the shoulder, which was shrinking, and turned him onto his back. His crotch deflated as his stomach sucked in. All the hair on his face and chest disappeared and his pecs perked up. His chest took Marie's attention because he didn't stop at a modest size. His breasts blew up to DD cup tits that rose with each of his breaths that steadily grow more high pitched. His chin slimmed and his eyelashes extended. His brown hair thickened and spread across his pillow. His nose narrowed and his lips puckered. Marie peeked into his boxers and knew then it was official, she was Marie's new girlfriend. Marie slapped the sleeping girl.

"What the fuck?" Jack looked surprised at his new voice. "It really worked, and so well!" Jack said as she picked up his two new breasts.

"What the hell did you do to yourself Jack?" Marie asked as she ground her teeth.

"Well, remember when I threw that theoretical at you the other day. When I asked if I didn't look the same would you still like me," Jack stated.

"Yeah, and I answered that thinking you were talking about getting crippled or burned or something. Not voluntarily turning yourself into a slut!" Marie shoved Jack hard and to her surprise he was much lighter.

"I'm not a slut, I've always wanted to be a girl-"

"With huge tits?" Marie fumed.

"That formula didn't have breasts growth in it, this is what nature had planned for me if I were born a woman," Jack explained.

"Don't give me that nature shit! You unnaturally changed your gender, without telling me! I'm your fucking girlfriend, don't you think I should know first?" Marie shouted.

"I didn't have a lot of time, the formula was giving to me cheap because it was about to expire and this cost me an arm and a leg!" Jack defended.

"Whatever!" Marie angrily turned away from him and crossed her arms.