Hunted by the Ming from China, young Kotaro and his dog meet a nameless samurai “Nanashi” who is haunted constantly by memories of his past which has led him to avoid drawing his sword ever again. Among the Ming is a fearsome Western fighter named Raro, whose only desire is to find a worthy opponent.

High school student Daisuke has a crush on classmate Hiromi. On the way to a school trip, the bus with Daisuke has an accident. When Daisuke wakes up, he finds himself in Hell. He asks himself “Why only me? I’m too you young to die and I’ve never experienced a kiss.” Then, Killer K appears in front of the confused Daisuke. Killer K leads the rock band Heruzu from Hell Agricultural High School. To return to the living and confess his feelings to Hiromi, Daisuke’s hell rounds begin under Killer K’s special training.