You are a girl in the same campus as Dazai, Bungou Gakuen. There is a famous serial killer in your city. But one day you found a list from Dazai's locker, there was a bloodstain on the list and the names of the people on the list were exactly the same as those victims of serial killer, and since that time.... you suspect Dazai

Now you are on campus because of additional classes, feelings of anxiety and suspicion are ingrained in your heart, making you unable to focus on studying