Upon entering Otowa Academy, Hatsumi and her closest companion Sakura made a pact to forever hold each other dear, regardless of new acquaintances. However, things take a turn when Hatsumi encounters Izumi, renowned for her stunning looks and penchant for male attire. Izumi repeatedly aids Hatsumi, evoking unexpected feelings that soon turn into a crush. Alas, Hatsumi's infatuation is dealt a crushing blow when she witnesses Izumi kissing another girl.