More than three hundred years ago, the Great War broke out between people and demonologists, and only thanks to seven heroes, paladins, did people manage to win. The surviving demonologists began to be brutally exterminated, so that soon their entire family disappeared. Rizar knows this story well, and therefore carefully hides the fact that he himself is the same monster from children's fairy tales. When the demons and the “Department of Seven Paladins”, once founded by the paladins, find out about him, it turns out that both sides want to use him for personal purposes. Together with a new acquaintance, the demoness Niji, Rizar will have to find out the truth about the Brotherhood - a mysterious cult, whose actions can lead to a repetition of the tragedy, as well as understand that war and find the truth that is not in any history textbook.