Pursued by formidable Chinese assassins, young Kotaro and his dog run into No Name, a mysterious stranger who gets pulled into the chase. The unlikely companions form a bond over saving the dog from a poison attack, but chaos erupts when the assassins find Kotaro, and No Name must face his past before a horrible fate is met again.

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.