In 20 10, the superpower Holy British Empire invaded Japan in order to seize Japan's underground resources.

Under the attack of Knightmare, a powerful anthropomorphic weapon of the European Empire, Japan was conquered in less than a month and deprived of its freedom, rights and even its name.

The Holy British Empire renamed "Japan" as "region 1 1", and the word "Japanese" was replaced by the number 1 1. On the surface, the imperial rule of the aristocratic class seems unbreakable, but there have been cracks in it.

Seven years later, in 20 17, he gained the power of "Geass" on the verge of life and death, determined to crush Edward the Black Prince Lu Luxiu of the sacred British Empire and Kururugi Suzaku, the seventh-generation humanoid mecha, and determined to reform from within the empire, which influenced the whole world.

Story background:

Fictional superpowers and the first scene in the work. Originally located in today's Europe, the British Isle was defeated by the European civil rights revolutionary forces in the Battle of Trafalgar. Queen Elizabeth III was surrounded by revolutionary forces in Edinburgh. Later, the noble holy Britain, which was invading and colonizing the United States, announced that it would move the capital of the holy British Empire to the United States.

Conquered one-third of the world's territory with strong military power. The main territories are: the whole America in the real world, Japan in the Far East (dubbed as 1 1 region after the work became popular), New Zealand in Oceania and so on. And it also occupies some territory in the Middle East.

And launched a fierce battle with the European Union in Africa, and finally reached an armistice agreement with the European Union, seizing half of Africa's North Africa, West Africa and South Africa, Europe's France, Spain, Portugal, low-lying countries and Russia from the European Union.

Culturally similar to Britain, militarily similar to the United States, and in European history similar to some etiquette systems of the Holy Roman Empire.