Boogiepop and Others

Touka Miyashita is a regular high school girl and quiet. She has dating Takeda who is the only one to observe that something seems wrong with her some of the time. When she appears, she looks through the person and seems to have a gap in her memory where she was before she returned.

This gap is filled by an identity called Boogiepop. A second person who inhabits Touka in order to deal with situations that she cannot. A demon is stalking the students at school, and the demon's name is Manticore.

The Manticore can take the shape of a normal man but it is not one. It kills female students, and no one knows the Manticore has been at school because he leaves no evidence of his presence behind.

All of the disappeared girls were considered troublemakers by their teachers, and as such were rejected by the teachers.