Code Geass: Fukkatsu no Lelouch S01

One year after the death of a man who was considered the most corrupt emperor of Britain, the world under the supervision of the United Nations is experiencing a unprecedented peace. However, this peace is broken when armed rebels, led by former Princess Nalani of Britain, and Souzaku Kororogi, advisor to the Black Knight's leader, create an international commotion. The Zilkistan kingdom, strong and unreliable, is accused of kidnapping. To investigate, world authorities send Colonel Steinfeld and his companions to that country. There, they encounter the immortal sorceress, C.C., who is on a mission to revive the man responsible for the greatest revolution in history - a legend comes to life, takes command, and saves the world from destruction once again.