With his doubts about his power fading, Ty's mind shifted to other thoughts. He lay back on his bed, still naked after his shower, and remembered some of the feelings he'd been having lately. Most guys would probably want to use a power like this to wish for a girl to fuck, but Ty didn't feel like he wanted that. He disliked his body a lot, not just because it was underdeveloped, but also, he had begun to realize, because it was male. He couldn't help but think he wanted to be a girl.
At that point, he realized he had become hard. His mind was wandering... thoughts of being feminine and beautiful, and of hot boys fawning over him, were running through his mind... and he knew he wanted this, he wanted to become a woman, at least to try it. Taking a deep breath, he wished, "I wish I had been born as a girl named Tabitha."
The intense sensation came into Ty's body again, this time not passing quickly but filling him, with a more recognisable feeling filling his body: arousal. New thoughts and desires were emerging in his head as the wish began to take hold and his body began to change. He felt himself shiver all over as his skin smoothed and his waist gently reshaped into a hourglass figure, his hips widening and butt filling out. He shut his eyes as his face changed, his cheeks softening and his eyes and lips becoming prettier and more feminine. His arms and legs and hands and feet shrank and became more shapely. Even his voice changed as his larynx shrank.
At that point, the pleasure from the wish subsided in favour of Ty's intense, lustful arousal as male and female homones alike flooded his system. His penis pulsed with excitement and his chest tingled as his nipples became erect and began to form an erogenous zone, and he quickly started jacking off while rubbing and pinching his nipples, panting with pleasure. The familiar feeling of rubbing his cock was soon far less intense than playing with his newly forming chest, and as he stopped fapping and began playing with his chest with both hands, the last of his femininity began to form.
Ty moaned and whimpered with excitement as he played with his growing breasts, grabbing at their flesh as they swelled and pinching the nipples eagerly. He barely felt it when his testicles pulled up inside him to become her ovaries, but he did feel the intense aching desire to be filled emerge in his mind, his scrotum reshaping into feminine lips and his penis rapidly shrinking into a sensitive clitoris. She brought one hand to her crotch and ran her finger along the middle, the epicentre of the aching, while her other hand continued to knead her breast. Her hips rubbed and grinded against her hand, until finally her slit opened, her fingers slipping inside it, and as she was trying to comprehend the feeling of taking something inside herself, she came, moaning intensely and feeling herself almost convulsing from the indescribable pleasure.
When she finally came down from the high, Tabitha sat up and walked over to her mirror. It was strange, but nice, to see herself; she looked quite like she had as a boy, but cuter and prettier. She smiled and thought to herself, "I think I like being a girl."