DAN-GAN (1995)

Punching and kicking students is commonplace. During the day, he fights with yakuza, and at night, he fights in the toilets of cabaret clubs. Inugami Dangan is the worst crazy teacher in the history of Japan. But even in the midst of his chaos, he feels something for his students, and as he begins to interact with them, a man appears who wants to take his life.