Danjou Yamato is a high school student living in the countryside and the regional boxing champion. However, when his family must relocate to Tokyo, he transfers to a school there that was formerly an all-girls institution. The girls hold significant influence and make life difficult for the boys. Yet Yamato refuses to yield to their dominance, and as he strives to secure power for the male students, he uncovers a truth about his past... something he had long forgotten...