One day, Komatsu Hinata, a book-loving high school student, meets a blond delinquent on the train on his way to school. Hinata is so happy that someone is interested in his favorite novels and gets unintentionally excited, but the delinquent gives him a surprising response, and Hinata spits out terrible words at him. Thinking that they would never meet again, he finds out that the delinquent is Igarashi Yukito, a student in the same class who has never been to school since the school started...?