ガチバンZ 代理戦争.

Kinugasa is under attack by a lone Yanki, Goki, who claims to be a member of the Piranha gang. Unable to stop his onslaught, Kinugasa high school is shut down. With Kinugasa’s boss Monji Mori gone, nobody’s there to save them. Desperate for help, Monji’s old friend Taiga Deguchi is called upon for help. Unfortunately for Kinugasa, Taiga isn’t exactly known for his strength...