Misty

For the moment, the boy trainer found himself in a small room. Sparsely decorated, he could just make out a set of PokePrincess dolls.

"This is Misty's room." he thought, looking down. but instead of finding his flat, male chest, he instead found Misty's chest and it's small cleavage. "Wait. Am I Misty now?

Looking about, there was no sign of any confirmation to the trainer's question. Not that Ash really needed that as he got up. Right now, he needed to know the extent of this. Just how much of him was Misty and how much of him was still by some unlucky chance, Ash.

Eventually, his gaze shifted to a full-body mirror. Heading over, Ash did a double take.

Before him was the body of Misty. Any trace of him had disappeared, lost in the some other world. Or perhaps his body was still back in Pallet Town and Misty was in control at the moment.

"Hmm..." he thought. On one hand, it would be kind of fun to mess with Misty's appearance. Though there might be other opportunities to mess with that later.

There was also the possibilities of challengers. They would need to be faced in order to judge their abilities and whether or not they could get their Cascade Badge.