Is it really "me" that you fell in love with? That's why I have to write. To know. Tadashi Hamazaki is a novelist who continues to write about the past on night trains. When he was in college, he met "Mika Machida," who looked exactly like Sumire Kirishima, the heroine of a movie. Is it reality or a dream? After serialization in "CONTINUE," this long-awaited book has finally been published. What kind of future will the intersecting past and present and night train be heading for?

The twin brothers Susumu and Tsutomu have been friends with the girl Sakura since they were kids. But when Tsutomu mysteriously disappears at the age of ten, Susumu and Sakura begin to drift apart. What Sakura doesn’t know: Tsutomu has returned, not as a person, but as the mirror image of Susumu. That is, whenever Susumu looks in a mirror, he sees his brother who talks to him. Thus begins a bizarre love triangle between Sakura, who torments the poor Susumu as much as she is being tormented by her peers, Susumu, who keeps thinking he has to save Sakura because he likes her, and Tsutomu, who despite being stuck in a mirror pulls everyone's strings.