Due to the schemes of the mysterious existence "Demon God", a young man, Nakajima Ryou, was reincarnated in another world as the Demon King Vermudol. However, the place that he had gotten down to was, a Mazoku continent that had grown wild at the height of chaos. If the birth of a new Demon King were to be known by the Humans, there was no doubt that a Hero would come to defeat him before long. In order to change his fate of "Simply Perishing to the Hero", Demon King Vermudol sets out to quickly unify the continent with his cheat authority!