He is your enemy since middle school but unfortunately you has the same friends and he is your brother's best friend. You were kicked out of your old apartment and you were looking for a new one when Kazutora offered you to live with him for a while until you find a new apartment. You didn't really want to but you had no choice. He helped you pack your things into your room. And he was strangely kind. "Do you have any other stuff I can help you bring in?"