Brother's Friend

Sota Nishino Is A Good Looking High School Student. He Meets Mai Who is His Friend Yukihiro Nanase's Younger Sister. She is Also A High School Student & Some what Naive. Sota Nishino Multer To Yukihiro Nanase Your Sister is Cute, MAi Overheard Sota's Remark Through The Thin Wall Between her Room & Her Brother's Room.