Ike is a powerful magician and the leader of the Immortal Brigade, part of the Seventh Corps of the Demon Lord’s Army. He single-handedly conquers fortresses and pushes back the armies of humanity. Neither Dairokuten, the Demon Lord, nor Ike’s loyal soldiers know his darkest secret—he is a human in hiding! But can he keep his secret safe and bring peaceful coexistence to demons and humans?

Eita, a mechanical otaku, discovers that Makina, the school idol he's secretly liked, is actually a robot built for sexual purposes. Now, he must navigate her bold advances while helping her keep her identity hidden in this chaotic romantic comedy.

Lloyd is a white mage who was unexpectedly banished from the hero's party. As he was lost and uncertain, he happened to cross paths with an S-rank adventurer party in need of a white mage, so he joined them on their quest. Little did anyone know at the time that the hero's party would fall apart and Lloyd would rise to fame.