Powerless against Dostoyevsky and Ame-no-Gozen, Atsushi is plunged into a strange interdimensional space where the very nature of reality seems pliable. There, he must face the visions that have haunted him since the beginning of the Decay of the Angel case, as well as the trauma of his own past. But reaching through the darkness, Atsushi grasps a single sliver of hope—and rises to fight once more!