Maou Gun Saikyou no Majutsushi wa Ningen datta

Ike is a demon renowned as the Maou Army's most powerful magician, capable of taking down a fortress by himself. His overwhelming magical abilities earn him respect and fear from both allies and enemies. Despite his fearsome reputation, he hides a crucial truth from other demons: he is human. To maintain his position, he uses his knowledge from the modern world to conceal his identity. This allows him to be seen as a brilliant leader and a key figure in the Maou's forces.