Osana Najimi is a high school student. Her boyfriend, Taro Yamada, is sweet, caring, and nurturing. Then a new girl comes into the picture. She starts to stalk Osana and her boyfriend. There have also been murders going on at the school. As Osana starts to investigate, she gets more than she bargained for. Will she succeed in catching the killer, or will she fall prey to the crimes?
5 parts