As Mika's group handles the aftermath of the incident, apprehending those that were still playing the game regardless, Akane tries to determine Kamui's motives behind obtaining Dominators, finding Togane to be a lot like her old partner, Shinya Kogami. After checking up on her grandmother, Akane confronts Kasei on why she hasn't deactivated Shisui's Dominator privileges, deducing that Kamui is someone that Sibyl has decided cannot be integrated into their network of brains. Meanwhile, Mika looks up Togane's background from files obtained from his computer, learning all of the inspectors he had previously worked with became latent criminals and were executed, unaware that Togane has found out she raided his room. As the group get together to examine evidence found in Kamui's hideout, Hinakawa discovers Kamui had used a hologram during the clinical incident which, along with the earlier hologram from the first incident, was also taken from a child who died in a plane accident 15 years ago, which the group discover Kamui was the only survivor of. Akane apprehends Yohei Masuzaki, a surgeon who previously operated on Kamui and is in cahoots with him, and has Saiga interrogate him, while Mika decides to investigate on her own after discovering the link to Masuzaki's medical files may be linked to Togane's corporation. After Hinakawa creates Holograms of all 185 victims of the plane crash, the group discover Kamui has dozens of followers right underneath their noses.

Having revealed the truth of the Sibyl System to Mika, with her hue remaining clear, Kasei and Togane, who was an artificially created human, decide to use her for the purpose of turning Akane's hue black. After eliminating Masuzaki, who knew too much about Kasei's identity, Togane tasks Mika with locating Akane's grandmother, Aoi. Meanwhile, Akane and the others learn of an official named Koichi Kuwashima, one of Kamui's friends who had escaped the plane accident, who at that time helps Kamui exact his revenge on a company who benefited from turning a blind eye to the incident. When Akane and the others arrive at the scene, which had already been set on fire, Kuwashima gives Akane a box containing Aoi's ear, angering her. As Saiga interrogate Kuwashima, Kamui starts making his next move by hijacking a subway train while Togane does something terrible to Aoi.