The Strongest Magician in the Demon Lord's Army was a Human season 1 episode 1
Episode title: Ike, Commander of the Undying Brigade
The Demon King's army continues to fight against humans. Ike, the leader of the Undying Brigade, is the grandson of the great magician Romberg. Despite being respected, Ike hides his human identity, fearing the disaster it would cause should it be known.
