Akuto keeps insisting he doesn't want to be the Demon King while every force in the universe conspires to make him one anyway, and the show mines comedy gold from watching him fail to control literally anything around him. The ecchi bits aren't window dressing, they're part of the chaos, each girl a different flavor of "this is happening whether you like it or not." By the finale, you realize the show spent twelve episodes asking whether destiny is something you choose or something that chooses you, then answered it by having Akuto trip into his own prophecy anyway.

Akuto Sai enrolls at the Constant Magic Academy hoping to serve society and make the world better. Instead, his aptitude test predicts he will become the Demon King, a fate he wants no part of but one that draws plenty of female attention. Suddenly he is surrounded by girls with their own agendas: class head Junko Hattori resents him, the mysterious Keena Soga wants him, and the android Korone guards him, all while he tries to convince everyone he has no interest in becoming evil. The real tension simmers beneath the comedy: Akuto desperately wants to prove the prophecy wrong, but his newly awakened power and increasingly demonic circumstances keep pulling him toward the very destiny he's fighting. His attempts to stay good clash constantly with the chaos erupting around him. It's equal parts ecchi comedy and action fantasy, swinging between harem shenanigans and a stubborn fight against a fate others see as settled.