Born in a family of delinquents, Nanba Tsuyoshi is expected to succeed as the strongest delinquent in school. Unbeknownst to his family however, he decides to enroll in the top high school in town to live as a normal high schooler. Can he maintain his double life as the strongest delinquent in town and as a normal high schooler? Adapted from the manga "Number MG5" (ナンバMG5) by Ozawa Toshio (小沢としお).