Mitsue Ueno

Three teenagers witness the brutal murder of a high school girl by an insane salaryman. The teenagers find themselves united by this event and become friends. Later the teenagers hold a party to take their mind off things. Their party is crashed by a local gang of thugs and one teenager finds his newly found girlfriend being raped. The teenagers deal with the thugs by using extreme violence.

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.