The Masked Black Knight. Now That My Identity's Been Exposed, I Might As Well Dominate the Academy TooKamen no Kuro Kishi. Shoutai Bareta no de Mou Gakuen de Musou Suru; 仮面の黒騎士。正体バレたのでもう学園でも無双する; The Black Knight'S True Identity Has Been Revealed, So He Is Unrivaled

The mysterious, strongest knight known as the “Black Knight” saves people in times of crisis. He was supposed to live as a masked hero in the shadows—yet his true identity is exposed as none other than Adele, the disgrace of a marquis family! Though Adel pretended to be incompetent in order to live a lazy life, his cover is blown, and now even at the academy he can no longer conceal his true power…!? A school tale of unrivaled dominance featuring a knight whose secret identity has been revealed!