In the parapsychic space where Nagi communes with Sensei, a black mass hangs ominously, symbolizing the bullet that pierced his brain, and the losses that came with it. Sensei wants Nagi to become a perfect vessel once more-or else, they have no use for him. Yet Nagi defies Sensei and vows to live an imperfect, human life, setting himself and Shizuka on an irreconcilable course to a cataclysmic confrontation…