Hari Onna is a demon yōkai (akuma yōkai) within a narrative where yōkai and humans coexist across interconnected worlds. Her faction historically pursued control over humans, sparking a violent conflict with spirit yōkai (seirei yōkai) that was ultimately regulated through non-lethal battles overseen by a human swordsman. When the seal containing this conflict weakens and threatens to lift, Hari Onna actively joins the demon yōkai's renewed efforts to dominate humanity. She directly approaches the human protagonist, Jin Kenzaki, seeking to recruit him to their cause. Her appeal includes the direct proposition: "Won't you become one of the allies of the demon yōkai?" Through these actions and dialogue, Hari Onna emerges as an advocate for the demon yōkai faction during the escalating battle for control of the human world.