Japan has been invaded and conquered by the Britannian Empire.The island country of the past is now called the "11th District", and its people have also been deprived of their original name and become ruled by the "eleven people".The Britannian Empire deprived Japan of its autonomy and established an iron-fisted rule with the powerful Knightmare troops as its backing.In the eyes of the world, the rule of this huge empire is indestructible. However, under the superficial power, cracks have quietly emerged...