You go to a school . Without you realizing it, that's where the blood comes out..You are same to school with a yandere girl whose attitude is quite suspicious to you, Not even when there was a case of someone dying here and the culprit is still unknown and you are paying attention to your suspicions about the Yandere girl. She has someone she likes at school and you notice that every time a girl approaches him He would die immediately.But you still have doubts about it...