Daichi Shinagawa is a bona fide “yankii”, a juvenile delinquent, who attends a prep high school. In fact, his reputation as a supreme tough is so widespread that he can’t walk the street without being challenged to a fight by other would-be thugs, and nobody will come near him at school. He, therefore, spends his days isolated and alone. Until one day he is befriended by the spectacled class president, Hana Adachi.