Psychic investigator Subaru Sumeragi is hot on the tail of a serial killer who seems to have some supernatural powers of his own. When Subaru encounters a young girl placing a curse on his suspect, the mystery deepens. The body count continues to rise, and Subaru must solve the case quickly, or he may become the killer’s next target!

Subaru is investigating the death of of a enemy, Kaneyama but before he died, he undertook a project, which was how to teach seven teenage girls how to use black magic to get revenge on people they don't like, but when one of the girls feels remorse, she is told by the other girls to continue with the black magic. Subaru tries to stop them but the girls think that he is their enemy and put a curse on him.