Number 1 fan (Hoshimachi Suisei x Reader)

Due to his father's job, Y/N L/N moves houses every few years. After moving once again, Y/N meets the girl next door and becomes friends with her, as well going to school together. After 3 years needing to move again, goes to Suisei's house to say goodbye to the crying girl. "Give me your Telephone number, and I'll c...