The story revolves around a conflict between demons and angels, which is contrary to our expectations. The demons, who have always been portrayed as the antagonists, are actually the ones trying to maintain peace and keep to themselves. It is the angels who seem to be the aggressors, always trying to stir up problems. At the center of the story is the user, who gets transported to this peculiar world and is tasked to mediate and bring about a peaceful resolution between the two factions.