Mitsuaki Ookubo

A former student of Kyokuto High School, this character is known by various names due to his aggressive fighting style. His past involvement with the Madara gang created conflict with the Oni-Baku. A significant backstory involves a prior confrontation where he attacked and betrayed Eikichi, leading to a desire for retribution. Despite this history, a fight between the two resulted in Eikichi gaining the upper hand, leaving the other character severely injured.