Yusuke Saito is a normal high school kid...well, normal enough, except that he can't remember anything from his life except the last six months. But when he starts to get confronted by people who insist they're from his past, who allege that he did horrible things to them...suddenly Yusuke's missing memories become crucial to remember. Otherwise, the skeletons in his closet may just make him a skeleton, too...
Twenty years on from the nightmare that visited the Morikawa family, a woman appears at a certain seaside town. She's been traveling around, gathering information about Yusuke Saito's story—and she's introducing herself as Yusuke's daughter. Now Sumire Okazaki has reached out to Akari Ichinose, telling her about a five-year gap in Yusuke's life that nobody knows about. But who really was the devil this whole time, and what was the crime committed?