Oliver's eyes widened as he saw his enlarged member, and he felt a surge of excitement. He raced to the bedroom, logged onto his computer and found a porn site he definitely didn't know about, eagerly stroking himself while watching people fuck. Before long he blew his load, messily shooting cum onto his hand and stomach, but after cleaning up, he soon felt weirdly listless again.
Somehow, even though he had a bigger penis, he didn't feel much more content with himself. "Maybe I'd feel better about myself if I was a girl?" he thought idly.
His power seized on the opportunity to change things again, and Oliver noticed his body starting to reshape. He saw his ands and arms turn more petite, his legs and feet followed suit, and his figure sucked inwards and turned curvy. His skin turned smoother and he noticed his face in the monitor's reflection appeared different now too.
He gasped, noticing his voice seemed higher pitched, as the changes made his chest sensitive all of a sudden, and saw his nipples grow large and puffy before soft mounds began to sprout around them- these were breasts! Further down, he saw his penis shorten back down to 2 inches, and it shrank more and more. His crotch turned almost flat, with what had been his penis receding into a tiny sensitive nub and a vagina formed as his scrotum split open.
At this point Olivia became aware that her powers changed reality. She knew she had been a boy called Oliver, but everyone now knew her as a girl called Olivia, and her memories of that life felt more real than her memories of being a boy. It felt strange, but she kind of liked being a girl- at least, it made a nice change.