...changing himself into a girl. If he could deage and shrink someone, it probably wasn't a huge stretch to be able to change his sex. And Ty had been curious about it for a long time- what did it feel like to be a girl? If he'd been a girl, what would he have been like? Those questions swimming through Ty's mind were making his power take hold...
Ty felt a shiver run through his body, and looked down to see his nipples had turned puffy. They were swelling before his eyes, and when he touched them he bit his lip as an unfamiliar sensation came from them. He slowly cottoned on, this was how it felt to be a girl. Or rather, to become a girl- his body was transforming like Dustin's had.
Leaning back against the shower wall, he saw and felt his whole body change from male to female. His figure altered and its narrow straightness gave way to wide curves while his shoulders narrowed and his muscles and hands and feet shrank to be more lithe and dainty. His skin softened, and turned mostly hairless and supple to the touch. His face had had its rough edges smoothed out, and his voice was high, his cheeks were soft and his lips puffy.
The wish then seized Ty's chest and crotch, and the process's sensations turned just as pleasurable as they were weird. His swelled up nipples protruded and formed teats, and his chest formed soft sensitive mounds of flesh around them. Ty realized these were breasts, and a newformed instinctual part of his mind desired to have them cupped and suckled on.
He peered past his chest as his penis shrank slowly away and his scrotum clenched upwards. When he saw his manhood receding and felt his testicles move up inside him, he felt a brief, intense sense of castration and emasculation- and then femininity took hold. He was not a man, she was a woman. As his penis tucked into place as her clitoris, his testicles became her ovaries and linked to a womb, and his scrotum flattened and a vaginal opening formed from it, Ty's instinctive desires to fuck a pussy and fill it with cum were overriden by desires to have a cock inside her and have it fill her with cum.
Once Ty had finished changing sex, she found herself panting against the shower wall with the water running loudly in her ear. The sensations still running through her were intense, and she was still trying to get used to her feminized body.
She wondered what to do next...