In his mad dash to leave his room, Jon accidentally bumped into his Goth sister Zoe and immediately merged with her.
He looked down at himself and saw that, for the most part, he had Zoe's body. Her feminine frame, her breasts, her hair. But between his legs it was a different story. He could definitely feel the penis that hung there.
He looked at himself in the hallway mirror and saw that he really was a combination of himself and his sister. Besides the things that he already saw, he noticed that he kept his own face and hair color. And his clothes had changed. Now they were a combination of what he was wearing and what Zoe was wearing. A blue corset, a denim skirt, skin-tone pantyhose, and black sneakers. And around his neck, a black choker, instead of a spiked collar like Zoe wore.
Another thing that was different, but Jon wouldn't have noticed, was that his age had changed, becoming the median of both their ages. So, now he was sixteen and a Sophomore in high school.
Jon walked back into his bedroom and got a shock. His bedroom looked like a combination of his original room and Zoe's room. As he explored his new bedroom, he noticed the sky returning to its original color.