Nurarihyon belongs to a faction of yokai determined to control humanity. This ambition shatters the long-standing peace between humans and yokai, igniting violent conflict within the yokai community itself. The ensuing strife prompts a swordsman's intervention, establishing non-lethal combat as the method for resolving disputes. Nurarihyon engages in the pivotal final battle, a confrontation deciding humanity's fate: subjugation by yokai or continued freedom. The outcome hinges entirely on a single human child chosen to lead the resistance against yokai dominion.