Ayumi Taniguchi

Upon rescuing a friend who is being held captive by a wicked classmate and his gang of bullies, 11-year-olds Tetsushi, Yuusuke, and Ryoji unexpectedly find themselves entwined in a supernatural battle against the forces of hell. Armed with courage, wit, and three magical charms given to them by a mysterious hermit, they set out to thwart the evil in a quest, which takes them to the depths of hell and brings them to a final battle with the god of death himself.

Kuroi Misa, a girl with Satanic powers, mysteriously appears in various high schools. Carrying a dagger and a heavy leather bag, she uses her powers to eliminate the evil forces that thrive on deadly sins of the human race. Her ultimate aim is to cleanse the earth and rebuild her broken family.