Code Geass Lelouch of the Rebellion

In 2010, the superpower "Britannia Empire" invaded Japan in order to seize Japan's underground resources. Under the attack of the Britannia Empire's powerful weapon Knightmare, Japan was conquered in less than a month. Japan was deprived of freedom, rights and even the name of the country. The Brittanian Empire changed "Japan" to "Area 11", and the noun "Japanese" was replaced by the number 11. On the surface, the rule of the Brittanian Empire seems unbreakable, but cracks have already appeared. Seven years later, in 2017, on the edge of life and death, the black prince Lelouch, who obtained the power of "Gass" and determined to crush the Britannia Empire, and the white knight Suzaku, who obtained the seventh-generation humanoid mecha Lancelot and determined to reform the empire from within, influenced the entire world.