"I have an idea." Jenny said with a smirk as she pushed Jeff away from the chronovac and started typing herself, Jeff watching over her shoulder before she pushed him away again. "It's a surprise Jeff." She said as Jeff nodded and went over to his bed and sat on it, allowing Jenny to finish her typing before hitting confirm. "This will be the experience for both of us Jeff." Jenny said as Jeff shrugged. He didn't know what Jenny had done but nodded as she smirked.
Suddenly both of them were stripped naked, their clothes bursting off them as Jeff gasped in shock before Jenny smirked, walking up to Jeff as he blushed at her suave walk. "Spread those arms Jeff." Jenny said as Jeff obliged, spreading his arms as Jenny pushed Jeff down before wrapping her legs around his body, smothing Jeff's face in her smooth tummy as Jeff blushed, his face hidden by Jenny's stomach as she smiled.
Suddenly Jenny's legs started to merge with Jeff's body, shrinking into him as Jeff gasped, suddenly he could feel Jenny's body connected to his own as her legs merged into him, adding to his mass as Jenny giggled. As she did so Jeff stood up, almost on command, causing Jenny fall back, her body flipping upside down with her hips attached to Jeff's chest and Jeff's dick rubbing against the back of her head. "Here comes the fun part Jeff." She said as Jeff looked down at her face, which was where his dick currently was. Jeff was blushing as he could feel his dick rubbing against her hair... which was also his hair technically as he could feel that too. As Jeff was blushing Jenny's Vagina, which was just a few inches from his face, sealed shut, Jeff gasping as a pair of nipples formed on Jenny's thighs, which ballooned into a pair of breasts that hung off his chest with Jenny attached to them. Suddenly Jeff smirked as she wrapped her arms around Jeff's ass, causing him to yell at her groping as her body and arms merged with his, Jeff's ass inflating as Jenny's belly button moved down her body to where his navel would have been, taking it's place as Jeff blushed intensely. His arms and legs had slimmed to girly proportions as he could already feel his dick shrinking. He'd realized what the change was. Jenny was merging with him to make him a girl.
Jenny giggled as she closed her eyes and opened her mouth, her face melting away and leaving just her mouth as it merged into jeff's crotch, bulking up his thighs as Jenny's mouth took the place of his dick, turning into a vagina as their transformation finished, Leaving Jeff alone with Jenny as the reason he was now a girl.
"Sweet." Jeff said, brushing his now longer hair out of his face with a finger. He wondered how long this would last?