Ty realized the fantasy he found most intriguing was what it'd be like to be a girl. He had always felt kinda out of place among boys given how much he got bullied by them, and while he'd never admitted it to anyone, he felt kinda unsure about his gender and sexuality. And yet unsurprisingly, he also didn't get to be with girls much. Maybe if he tried using his powers to be a girl, at least for a while, it'd clear things up for him.
He stood in front of the mirror on his closet door and undressed, pulling off his pajamas and underwear to get naked. He gazed on his boy's body for a minute or so, contemplating his fairly petite figure, faintly haired body and the manhood between his legs. Weird to think all of this is gonna change, he thought.
Hesitantly he said, "I wish I would turn into a girl version of myself, and that everyone remembers me that way and I know everything I need to to live safely and comfortably as a girl."
Unlike the other times he'd wished, a vision ran through his head as it began to take effect. He saw an egg surrounded by sperm, like out of a biology textbook, and watched as one pushed inside- only for it to get tugged out and a different sperm wean its way inside.
Ty understood his biology classes well enough to get that this was probably a vision of a sperm with Y chromosome getting replaced by a sperm with an X chromosome. But what took him a moment was that he had just seen his own conception- or, as it was gonna be now, her own conception. He felt deeply strange, but pleasant, as feminine hormones started accumulating inside him.
A tingling sensation spread through him as his reassigned sex began to assert itself. He noticed his facial features subtly altering- his hair lengthened down his shoulders, his cheeks rounded and his lips puffed up. He swallowed hard and gasped as his larynx and neck shrank, his voice rising in pitch significantly.
His proportions began to change further down. His shoulders tugged inwards and his hips flared outwards, his ass filling out with them. He saw his torso shrink inwards and contort into a faint hourglass. He lost a few inches of height and his arms and legs turned more lithe, his hands and feet daintier.
He even felt his skin starting to alter. Its texture became softer, smoother, suppler to the touch, and his body hair turned so fine it practically vanished except for a few places. It amazed Ty how he looked unmistakably like a girl besides his chest and crotch now.
Fittingly, another intense sensation swept through him as these too began to change. He felt a warmth in his chest as mammaries formed within, and his nipples perked up and grew wider and puffier. He carefully pinched them and gasped with pleasure, fondling himself as breasts developed and swelled up to about a C-cup on his chest.
A twinge ran through his penis, and his eyes fell to it as it slowly shrank into his body, growing more and more sensitive as it receded away. He felt his testicles clench up and start to tug up inside him and reshape. The boy whimpered as he became castrated- and she became female. Her newformed ovaries linked up to a womb inside her. His scrotum became flush with his crotch and peeled open into her vagina. His penis, which had gone from about 5 inches to barely 1 and settled into place atop her vaginal folds, continued to shrink until it formed her clitoris and hood.
Ty breathed deeply as she came down from the high of becoming a woman. She gazed on her girl's body for a minute or so, contemplating her faint curves, smooth skin and the womanhood on her chest and between her legs.