Souchirou Nagi and Bob Makihara are two delinquents who arrive at Toudou Academy determined to rule over the school using brute force. However, on their first day, they were confronted by the Jyuukenbu, a martial arts group of the school. The members, Maya Natsume, her sister Aya, and Masataka Takayanagi easily overwhelmed Souchirou and Bob. Furthermore, due to the assumption that these individuals had connections with the Jyuukenbu, they were attacked by members of the Enforcement Group, which oversees the martial arts groups at Toudou Academy. As a result, Souchirou and Bob are drawn into the personal conflicts between the Jyuukenbu and the Enforcement Group. To protect their newfound allies, Maya Natsume's group, they must learn to become even stronger through rigorous training.
Souichiro Nagi and his best friend Bob Makihara, known as the Knuckle Bombs, ...