On August 10, 2010, a.t.b. (the Imperial calendar, roughly 2060 A.D.), the Holy Empire of Britannia overpowered Japanese forces and conquered the country with their new robotic weapons, the Knightmare Frames, in less than a month. In the aftermath of Britannia’s invasion, Japan lost its freedom, its rights, and even its name, becoming Area 11 of the Britannian Empire. The Japanese people, renamed as “Elevens”, are forced to survive in poor neighbourhoods, while Britannians live in first-class settlements. Rebel elements persist, however, as pockets of Japanese organizations struggle against the Empire for the independence of Japan.