His cock was now rock hard in anticipation to what he was about to do. "I wish...I wish that I had a twin sister, and that we were perfectly identical other than our genitals." The stone flashed, and when the light faded, he felt... different. He looked down to see a pair of breasts encased in a black dress, and he felt the weight of it, mostly on his shoulders in the straps of it next to the straps of his bra. His cock was still hard, but it was tucked into panties.
"Hello, Earth to Jon?" He looked up to see a girl who looked like an older Zoe, in an identical dress that, he saw, showed off a good deal of cleavage. "Ready for school?" she asked, smiling, and he saw a face identical to hers in the mirror behind her... as well as an identical body.
"Uh... sure," he said in his normal voice. It looked so strange to see that cute girl speaking and hear his voice.
"Little excited, are we?" she teased, patting his crotch. "Come on sis, let's go!"
He was pulled along for a bit before she let go, leaving him to walk down the hall in the modest heels. A steady hand on the wall kept him from stumbling while he got the hang of it, and he suddenly remembered that the rock was in his other hand. Jon stopped for a moment, unsure of what to do with it, but then it hit him. He tucked it into his cleavage, shuddering a bit at how cold it was. "You are such a slut!" his new sister exclaimed, smiling. He smiled back, aware of the ruby red lipstick they both wore. They met Karyn on the way out, and she stood in the yard, looking between both of them as if unsure of who to talk to.
"Hey, Karyn," he said, waving and smiling.
"Oh, hey, Jon-boy. You guys need to wear nametags or something. Who's driving, Jan?" Karyn asked, turning to his twin. She pointed to herself and Karyn groaned, making her giggle.
"I've gotten better! Least I don't drive like an old lady," she said, looking pointedly at Jon. He just smiled, unsure of what to say. "Why are you such a zombie this morning? Oh, it doesn't matter, you'll be awake by the time we get to school. Hop in."