Code Geass: Dakkan no Rozé

In the Kowa Period, the Neo-Britannian Empire occupied the former ruler and Mercenary Brothers also known as Nameless Mercenaries. The elder brother, Ash has special abilities like athletic and Knightmare frame controlling skills. The younger brother, Roze has special powers like clearheaded and oversees intel strategies. There is a huge energy wall known as the Situmpe Wall that was built by the 1000th emperor who stopped the black knights. He wanted to plunge the world into chaos against Norland who is his servant. On the request, Roze and Ash with their group bring out the empire to recapture Princess Sakuya.