You have all been chosen to complete this book. In order to do so, you must defeat ayakashi. If the book is not completed, all of you will die. You have until…1pm. You awake in a world you’ve never seen before. When you look up, you notice a huge clock with 13 hours marked on it. Lying next to you is a ‘white book’ that is familiar to you. You find 9 young men trapped in the same library as you. Though you try to escape through a large set of doors at the back of the room, it has been firmly locked. To escape from this world, you have no choice but to follow the orders of a mysterious book…… In addition to the game’s original characters, characters and the worlds from 5 of Otomate’s previous games will also be making an appearance. (Hakuouki, AMNESIA, NORN9, Moujuu-tsukai to Ohime-sama, Yunohana SpRING!)