Kuraki Naotake is the top ace of the Public Safety Department. Osugi Ryota is a top-notch straight-talking detective from the MPD. Akeboshi Misa is an investigator from the Public Safety Department. Together, the 3 of them investigate on the bombing incident in Shinjuku. Naotake had specifically requested to be on the investigation team as he had lost his wife in the said incident.