And so this picks up two and a half years later. He is now 16, like his sister. though he isn't anything like the ball of happiness she was. he was...sad, introverted, and alone. some people were convinced the guy was mute due to his lack of talking throughout the school year. Unfortunately, this now gave him a big bullying problem. He was an easy target after all. Things were looking pretty bad for him. But of course, there is always good in bad. There was somebody who, at this time was just someone he would small talk with at the cafeteria, called, if he recalls right, 'cory' cory, something. A green-haired weirdo, from his point of view. Anyways, the two eventually met up in the hall. (Or rather Cory had stopped him in his tracks in the middle of two classes.). In short, (Because I really gotta rush this if it'll ever be complete (Which I am very sorry about)) they both got to talking, and Cory managed to play his cards right on accident and get this guy to talk about his sister's disappearance, his depression, his bullying problems, and a newfound discomfort with his biological sex. And cory was very sympathetic and helpful, giving this guy hope that he may one day see his sister again, giving motivation that later helped him overcome his depression, and giving some casual talk about his discomfort that helped more. Ultimately leading up to... whatever situations you're putting him in.
(I had to rush the ending due to some writer's block. I hope it still suffices and holds up well. If you want any other lore, ASK TOMORROW. I need a break.)