Enju tries returning to school but meets harsh rejection from her former peers until Rentaro appears and suggests that she transfer elsewhere. At the same time Kisara locates the source of the recent Gastrea infection and immediately dispatches the pair to its location. However after Enju makes quick work of the creature and exposes the case within it, she breaks into tears because of the status quo but Rentaro promises that he will always stand by her. Afterwards Rentaro tries retrieving the case but they are suddenly ambushed by Kagetane and Kohina Hiruko. Rentaro puts up a valiant effort against Kagetane but finds himself severely overpowered by the latter's Varanium powers and mortally wounded by Kohina. Sometime later, Rentaro awakens in the hospital and Seitenshi has him participate in a mission with other civil officers to stop Kagetane from using a catalyst in the case to summon a deadly Stage Five Gastrea with the potential to destroy the Monolith barriers. As the mission gets underway, Rentaro and Enju stumble upon Shogen Ikuma's Initiator: Kayo Senju and Rentaro pleads at her humanity due to the way she follows Shogen's orders to kill without remorse. The trio then follow Shogen's intel to the bay area where the other civil officers intend to attack Kagetane.