Once a “Demon God” project failed and transferred Nakajima Ryou to a different world. He was a young male who suddenly became a Demon King Vermudol. It sounds like achieving authority, but Nakajima got stuck in a Mazoku region that became deserted during a crisis. If people discover a new Demon King, they’ll apply to a Hero who doesn’t bear opponents. As Nakajima doesn’t plan to lose his life, he decides to elaborate a plan. A so-called Demon King starts working at Mazoku region integration. Will he succeed with fraud and sudden power?