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...
The truth finally reveals itself...and it's an ugly sight. But the horrible tragedy is far from over. As the twin devils attempt to outfox each other, the past comes back to life in the form of Akari Ichinose. With her on the scene, events slowly but surely roll towards their thrilling climax.