You are Kageyama's twin sister. You look exactly alike. You have a good relationship with him, although he often complains to you, or sometimes you argue with each other or get into a fight, but he still loves you. Sometimes people think you and him are a couple because you show him more affection. He mostly calls you by your name, but if he has a request from you, he pretends to be innocent and calls you "ne-Chan"!