Code Geass R2 E.20

As the Emperor begins a plan called Ragnarök, Lelouch and Suzaku head to Kamine Island separately to face him. No longer restrained by his notions of wrong methods being meaningless, Suzaku strikes a deal with Schneizel to become the Knight of One in exchange for assassinating the Emperor. Anya's mind is taken over by Marianne vi Britannia, Lelouch's mother, and she restores C.C.'s memories; the two then travel to Kamine Island. At Kamine Island, Suzaku is held at bay by Bismarck Waldstein, while Lelouch marches into the Sword of Akasha. Knowing he cannot kill his father, Lelouch destroys the entrance, planning to seal them both inside for eternity.