After being forced by her teacher, Naruse must take the materials to the art room. When she arrives, she meets her classmate Okachimachi. Her first impression is that he is a mature and kind boy... or at least that's how it seems, but after praising his painting, he reacts very differently from the mature guy she first believed him to be. Thinking that it will not be necessary to talk to him again, after an incident she happens to discover Okachimachi's big secret, which will bring more than just confusion. An exciting school life is about to begin!