According to Nikorai Spektor, this novel is his favorite, because the main character, Hikaru Saki moto, is very much like the author. Out of pure curiosity, the high school student Hikaru sends an online soothsayer a group photo of his class. In response, he receives a sinister prophecy: “In 88 days, two people from this photo will die.” One of the fated is himself, and the other is Rin Asami, a bubbly girl. Hikaru is stunned—why are they the ones destined to die on the same day? Is there some connection between him and Rin?