Worst

A juvenile delinquent named Eiji Razor takes shelter in the basement of an abandoned warehouse after sensing danger. When he emerges following a heavy rain, he discovers that the town has been overrun by the Worst—nocturnal creatures that emerge from human corpses and can regenerate after being dismembered. The rain was contaminated with a deadly virus that kills people and transforms them into Worst. While fending off these creatures, Eiji encounters other survivors, including a young boy named Taku Maejima, an American soldier named Harry, and a delinquent student named Tozaki. The group takes refuge in the Kasumigaseki Building, using it as a stronghold.