A classmate from Ushijima's middle school days, Takemoto, shows up. He was a kind man, but now is jobless and without a home. Adrift and unable to borrow money from Ushijima, Takemoto heads for Seiai Home where he can stay while doing work.

Underground people who exhale toxic gas appear in Tokyo's S-Ward, which is dealing with construction noise from urban development projects. Everyone panic, but it turns out that five middle-aged guys are unaffected by the poisonous gas. They undergo vigorous training to fight the underworld people, but are they going to be able to save the world…?

A young high school Yanki (Japanese delinquent), Tokio, gets suspended from his school and ventures out to Ikebukuro. Aiming to become a janitor for at a love hotel, he eventually gets scouted to join a gang. They make money ripping people off, and Tokio begins to question his own actions. The gang thinks all is well, unaware of the bigger threat that awaited them.

A bartender, a serial killer who skins his face and wears it like a mask after killing a guest. One day, he runs into a suspicious man drinking alone at a bar. After killing him and wearing his face like a mask, the bartender soon becomes engulfed in a nightmare fantasy. In the fantasy, he encounters himself, who is much more cruel and bizarre than usual, and finds out that the man is a much crazier man than he is. His face clings to his skin of a bartender, and his madness is at its peak.