Makoto has long been ostracized because of his odd hobbies and a sexual kink others see as disgusting. One day he summons Archduke J—a trickster demon from hell—and sells his soul to him, only to unknowingly end up reborn in hell…as J’s demon underling! As he learns and grows in his new role, his infatuation with J turns into an obsession—an obsession to surpass the very demon who birthed him.