Stolen Supplement (Non-Futanari) (Patreon)

As Mark roused from his bed he rubbed his eyes. There was no way. Before him stood Nina, her body chiseled stone and bulging muscles. She hopped to the ground from his pull up bar with a heavy thud, Mark swore he could feel the flood tremble as her feet landed. How was this possible, he trembled before his formerly petite roommate. Little Nina he wouldn't be able to say that anymore, that's for certain.

She tested her bicep almost salivating as a thick vein pressed against her skin, running down her arm. Mark's eyes trailed down her taught form until he realized she was watching him too. She was drinking in his surprise, his jealousy, his hunger. Her lips coiled into a knowing smirk.

"See anything you like? It's a shame Rachel used all the supplement on me. But something tells me I'll know how to use this form better than you." Why can't I stop starring? His eyes slid down her glistening abs No, it was impossible! Mark quivered with anticipation. She'd grown this big in a matter of hours, how much larger could she become? She seemed to read his thoughts, or maybe she'd finally spotted his--by comparison--unimpressive member. "I think you do...awww it's so cute!" Nina giggled with a deep purr.

"Hey, I've got muscles too you know!" Mark said with less confidence than he had hoped.

"So touchy. Don't worry, you're still the big man of the house," Nina put a finger to her lips, smiling coyly. "Maybe we need to call Rachel for an impartial judge? I bet she's more than eager to help us settle."