Code Geass: Hangyaku no Lelouch R2

A year after the Black Rebellion collapses, Zero has vanished and Britannia has tightened its grip on Area 11. The Black Knights are scattered, resistance is being crushed, and Lelouch Lamperouge appears to have returned to an ordinary life at Ashford Academy with no memory that he was ever the masked rebel who challenged an empire.

C.C. refuses to let that stolen past remain buried. When Lelouch regains the purpose and power that once made him Zero, the rebellion begins moving again, but Britannia is prepared for his return and the people closest to him have changed. With old loyalties fractured and new secrets surrounding his family, Lelouch must rebuild his revolution while deciding how far he is willing to go to create the world he promised.