To combat terrorism and violent crimes that have evolved in complexity, a new "Special Investigation Department" has been newly established in the Metropolitan Police Department, equipped with a new type of armored weapon, the "Dragoon." The head of the department is a former foreign affairs bureaucrat, Okitsu Junichirou. Its crew consists of three mercenaries. Although they are regarded as "traitors," the ultimate "professionals" take a stand against a major case that could shake the world! Currently serialized in Monthly Young Magazine. Winner of both the Yoshikawa Eiji Literary Newcomer Award and the Japan Science Fiction Grand Prize. The highly intense, long-running police novel series is now getting a long-awaited comic adaptation!