Living in the countryside, Danjou Yamato is a boxing champion who attends high school. Unfortunately, his family decides to relocate to Tokyo, and he is forced to transfer to a previously all-girls school. Yamato quickly realizes that the girls have a dominant presence and are difficult to deal with. However, he is determined to stand up for the guys in the school and not back down to the girls' power. Along the way, he discovers a forgotten piece of his past that holds significant meaning.