The Strongest Magician in the Demon Lord's Army Was a Human

Ike stands as a formidable mage and commands the Immortal Brigade, a unit within the Demon Lord's Army's Seventh Corps. He alone overthrows fortress strongholds and drives back humanity's forces. Yet neither Dairokuten, the Demon Lord, nor Ike's steadfast troops are aware of his deepest secret - he is a human concealed in hiding. But can he protect his clandestine identity and usher in a peaceful coexistence between demons and humans?