Setting
The Kerberos Saga is set in an alternate history 20th century. In this timeline, the United States maintained their policy of non-interventionism through both World War I and World War II, and the Empire of Japan joined the Allies of World War II instead of the Axis powers. In the Kerberos Saga 's version of World War II, Nazi Germany manages to develop advanced technology during the war, most prominently "Protect Gears", heavily-armored powered exoskeletons that distinctively feature a Stahlhelm and a gas mask with glowing red lenses. These advances allow Germany to defeat the Allies, most prominently the Soviet Union by using the Protect Gears during the Battle of Stalingrad, and Japan through the atomic bombings of Hiroshima and Nagasaki. However, the 20 July plot, when Claus von Stauffenberg attempted to assassinate Adolf Hitler with a bomb during a meeting in 1944 (a failure in real life), succeeds, leading to a complete purge of Nazism from the German Reich and the restoration of the Weimar Republic, though authoritarianism remains dominant. A now denazified Germany occupies Japan and, by the postwar economic boom, shifts course in the occupation and sets up a new government called the "Weimar Establishment" (ワイマール体制) to modernize and globalize Japan, allowing it to take advantage of the growing economy. However, this also exacerbates class stratification and urbanization, leading to the growth of anti-government movements that often resort to terrorism.
Terrorism and crime soon become a major issue by the late 1940s and the 1950s, with police unable to handle riots and terrorist attacks, but limitations on the new Constitution of Japan forbidding the deployment of the Japan Self-Defense Forces to effectively quell the violence. The Japanese government thus establishes the Metropolitan Security Police Organization (commonly "Metropolitan Police" (MP) or Shutokei (首都警); "Capital Police" or "CAPO" in English), a paramilitary police force tasked with maintaining order in Tokyo and countering terrorism; to ensure this can be conducted effectively, the Metropolitan Police's elite Special Armed Garrison ("Special Unit" in English), nicknamed "Kerberos", is issued advanced military equipment, including Protect Gears, and is authorized to use violent force against suspects. The Metropolitan Police and Kerberos succeed in countering and defeating Japan's anti-government terrorist groups, forcing them to merge under a single movement called "the Sect".
However, the Metropolitan Police faces external friction from the Self-Police ("Local Police", "Metropolitan Police Force", or "NPA" in English)—officially the Tokyo Metropolitan Self-Police Department, whose jurisdiction overlaps with the Metropolitan Police—as well as the JSDF, while Kerberos's division, the Defense Division ("Capital Area Security Police Agency" in English), experiences interservice tensions with the Metropolitan Police's intelligence agency-like espionage unit, the Public Security Division. Over time into the 1950s, as Japanese living standards improve, the Sect's public favor plummets, and Kerberos becomes increasingly brutal, the necessity of Kerberos in Japanese society comes into question. This ultimately culminates in the "Kerberos Uprising" or "Kerberos Riot", an incident analogous to the 1877 Satsuma Rebellion, when Kerberos, deducing that the government and police intend to get rid of them but refusing to disband, launches an attempted coup d'état that fails when the JSDF repels it, leading to the deaths of all of the Kerberos members and the disbandment of the unit.
Characters and organizations
The primary organizations of the Kerberos Saga are the Metropolitan Security Police Organization, a paramilitary counterterrorist police organization operating in Tokyo; the Self-Police, the local police forces of municipalities and prefectures, most prominently the Tokyo Metropolitan Self-Police Department; and the Japanese Self-Defense Forces. The Metropolitan Police is divided into two divisions: the Defense Division, the main armed branch of the Metropolitan Police, consisting of the Special Armed Garrison and the Aerial Squadron; and the Public Security Division, the espionage division. Within the Special Armed Garrison itself is "Jin-Roh" ("Wolf Brigade" in English), a secret counterintelligence unit that seeks to protect its existence. The 2006 radio drama Kerberos Panzer Jäger also follows the Wehrmacht which, after the restoration of the Weimar Republic, is reformed into the Reichswehr.
By the time of the works in the series, most anti-government terrorist groups in Japan have combined under the Sect, a left-wing terrorist group. A major part of the Sect is the "Little Red Riding Hoods", a courier unit that consists of young girls wearing red clothing who smuggle and move materiel such as explosives for the Sect, using their unassuming and non-threatening appearances to get past police without being searched or attracting attention. Other minor terrorist groups and non-violent movements are mentioned or shown, such as the Four Seasons League, a communist terrorist group based on the Japanese Red Army.
Most works in the saga follow members of the Metropolitan Police and the Special Armed Garrison, major protagonists from these factions including Koichi Todome, Washio Midori, Soichiro Toribe, Toru Inui, and Kazuki Fuse. Members of other factions that make prominent appearances in the saga include Public Security Division agents, Sect members, Little Red Riding Hoods, tachiguishi, and assorted terrorists and civilians.
