AllMovie

Based on a popular "sun tribe" novel, Punishment Room hues close to the genre's traits in depicting the violent and sexually promiscuous adventures of Tokyo's decadent, wealthy teens. The plot follows Katsumi (Hiroshi Kawaguchi), a precociously cruel and scheming college student, as he takes advantage of his family, abuses his girlfriend, and cheats his buddies, all the while concocting a scheme to steal the ticket money for a dance he's planning. But he finds himself over his head when he enlists the help of an even tougher, older gang. The back room of a bar where he receives his lengthy and violent comeuppance gives the film its title.