Jon looked at the stone and made up his mind. The best way to infiltrate this conspiracy was to make himself a girl. For a moment he had an odd sense of déjà vu, but pushed it aside as he needed to focus.
"I can't let myself become stuck as a girl," he thought out loud. "And if I orgasm as a girl I'll go into a trance and be reprogrammed by whoever is around me." Then he had it.
"I wish that I could turn into a girl at will, but whenever I orgasm I will instantly turn back to my male self." The stone flashed in his hand, but when it subsided nothing seemed different.
"Here goes," Jon said to himself and concentrated on transforming himself. A shiver passed through him and when it passed he felt tingly and different. Jon turned to the mirror in his room to see a pretty female face looking back at him. There was definitely some family resemblance in the face, and she had Jon's hair, but longer and with a bit of curl. Of course she was dressed in Jon's t-shirt and jeans, which were pretty baggy on her smaller frame.
Jon did the obligatory check of his crotch, confirming that he was now fully female. He looked down his shirt at his chest, finding unsupported but pert breasts. "Wow," was all Jon could manage. He had no idea what size they were, they did not look that big, but felt huge.
After a minute Jon managed to pull his attention away, after all a teenage boy given such access to breasts is bound to get distracted. He looked at her reflection and realized that he would look very out of place as a girl with male mannerisms and dressed like this. "I wish that when I turned into a girl I could act feminine and that my clothes would transform to fit and be appropriate, then change back when I did."
The stone flashed, causing Jon to look away. When he looked back the girl in the mirror was dressed in a more fitted t-shirt and jeans. He felt the tightness of panties around his crotch and butt, a big change from his boxers. The biggest change was a bra supporting his boobs. It itched.
That should do it, Jon thought. He was particularly proud of the 'could' part so that the was not forced to act like a girl. Just as he finished patting himself on the back he turned to his closet and stopped. All of his clothes had changed. Among the jeans and simple shirts were blouses and skirts. Oops, he meant the clothes he was wearing would change, but it seemed like all of his clothing would change when he did.
"Time to go save Karyn," said the new girl Jon.