As Quanxi and the members of the Special Division battle it out over Denji, the mysterious Santa Claus makes his move. But things are not as they appear, and nobody will be prepared for the darkness and despair about to be unleashed!
Having been forced to kill a friend, Denji finds that his brain has turned to mush from despair. Without the motivation to keep going, he seeks help from Makima. But Makima is not what she appears, and Denji's pain is only just beginning.
With the battle against the Gun Devil fast approaching, Aki seems to be having a change of heart. Why is he suddenly willing to give up the revenge he's worked so hard for?
