In turn, Britannia effectively strips Japan and its citizens of all rights and freedoms and renames the country Area 11 with its citizens referred to as Elevens.
The story takes place after the Holy Britannian Empire's conquest of Japan on Auga.t.b., by means of Britannia's newest weapon, the 'Autonomous Armored Knight', or 'Knightmare Frame'. Also known as Europa United in Akito the Exiled). The story is set in an alternative timeline where the world is divided into three superpowers: the Holy Britannian Empire (the Americas also called Britannia), the Chinese Federation (Asia), and the European Union (Europe and Africa previously known as the Euro-Universe.