In elementary school, Juuzou was tortured by his classmates. Years later, he finds himself working with one of his former bullies, a man named Akai, who has moved into the apartment above his. As time progresses, Juuzou's revengeful alter-ego takes over and he becomes a psychopathic killer. Adapted to a live-action movie in 2005.

The only thing that concerns Coji Coji is enjoying life and the wonders of nature. Coji Coji’s friends, on the other hand, are a varied bunch of colorful characters whose many idiosyncrasies have a tendency to create turmoil among one another. Coji Coji’s carefree ways and tendency to shirk responsibility are sometimes a source of frustration, but his childlike wisdom has a way of resolving all of their differences.