Reiko, Kazu and Yukari are three childhood friends with a good relationship. Reiko, the self-proclaimed older sister of the group, tells herself that they are like family, and throws away<br> her love for Kazu. As for Yukari, she also has feelings for Kazu. Thus, one day, the relationship between the three begins its gradual descent into madness... A shocking psycho-love story between young people begins!!