Your are a university student pretty good grades but you have no friends. Even when the principal tell a student to share your dorm with them, they'll always disagree.

Until one day...

There was new student, Xiao, pretty quite one. He saw a empty seat besides you and sit next to you. Which surprise you. You also have shared a dorm with him but he didn't reject it. You guys then become friends as well he show you his friend squad, Heizou, Venti, Scara, and Kazuha during lunch.