Nora, an unruly demon, has defied his superiors one too many times. For the sake of his ""education,"" Nora is sent to live among mortals and enters a bond of servitude with cool-as-ice star student Kazuma Magari. Kazuma is about to learn the ways of the underworld...and Nora will learn more from the ""real world"" than he ever thought possible!
Having survived their battle with the Resistance leader, Nora and Kazuma learn about the history of Cerberus and the Dark Liege's previous incarnations. In doing so, they discover the pivotal role Nora must play in the balance of the Human and Demon Worlds...and the reason Kazuma was chosen to work with Nora.