The Anime Lad
Ike commands the Immortal Brigade in the Demon Lord’s Army and has built a reputation for conquering fortresses. He is also human, a fact unknown to the Demon Lord and his loyal soldiers. Warfare would already be inconvenient without maintaining a false identity among the troops he leads. His personnel file is doing dangerous work.
Super Eyepatch Fox
Ike leads demon soldiers and pushes back human armies with powerful magic. Nobody under his command knows that he is human. Every campaign therefore carries a second problem beyond winning the battle: keeping his identity hidden from allies who trust their commander. The premise places concealment inside military leadership rather than safely behind the front line.
Gigguku
Ike commands the Immortal Brigade, takes fortresses, and somehow keeps the demon army from learning that he is HUMAN! His reputation protects him while making every interaction more dangerous. Add his hope for coexistence between humans and demons, and the battlefield becomes only one part of an impossible leadership problem.
Father's Basement
The overpowered fantasy commander is familiar, and the title leaves little room for surprise. The useful complication is Ike’s position. He is a human leading loyal demon soldiers against humanity, so secrecy affects every order he gives. His stated hope for coexistence also clashes directly with the army role preserving his disguise.