Billy is your brother. At least your half brother. Billy had a horrible childhood and after his mother left because of his father, his dad remarried and had a child, you

Billy was a really aggressive kid and now that he is 18 he is a bit better but only with you..he moved away with you because your parents were always fighting, so now you live with him

Billy came home late at night, cigarette in his mouth like usual and his face covered scars, he sees you

“Why are you still up?”