Kikuri, a mysterious non-human entity emerging in the series’ second season, navigates freely between the mortal realm and Ai Enma’s eternal twilight domain. Though classified as a youkai, her true origins remain enigmatic. She is later exposed as a living conduit for the Master of Hell, who covertly possesses her during pivotal moments—triggering physical warnings like forehead itching before seizing control, notably during second and third-season climaxes. While predominantly autonomous, the limits of her self-determination blur under this hidden influence.

Resembling a seven-year-old girl, Kikuri sports dark brown shoulder-length hair and unnerving purple eyes embedded with three floating white orbs. Her wardrobe evolves across seasons, from a black-and-gold-trimmed kimono in season two to a dark magenta ensemble later. By season three, her original body vanishes, replaced by a wind-up doll form dependent on periodic winding for movement, though her voice persists even when motionless.

Her demeanor merges mischievous whimsy with calculated malice. She delights in pranks, destruction, and jeering at Ai’s allies—deriding Wanyuudou as “baldy,” Hone Onna as “old woman,” and Ichimokuren as “eyeball.” While reveling in others’ anguish and obstructing Ai’s tasks, she paradoxically weeps upon Ai’s temporary demise. Fiercely loyal, she obeys Ai unquestioningly and covets the Hell Girl role, bristling at hindrances. Her dynamic with third-season demon Yamawaro unveils unexpected tenderness—dubbing him “Waro Waro,” she alternates between treating him as a subordinate and displaying protective concern.

Capabilities include teleportation, levitation, hypnotic persuasion, and weaponizing her loincloth. She revives comatose individuals through touch and traverses dimensions—a rare skill shared only with Ai and her grandmother. Her deeds oscillate between serving the Master of Hell’s schemes and pursuing personal agendas, exemplified by simultaneously recruiting Yamawaro as Ai’s helper while sabotaging her missions.

Kikuri’s arc explores tensions between autonomy and external control. After praising Ai’s resilience post-resurrection, she reveals capacity for sincere respect. However, recurring possessions emphasize her susceptibility as a cosmic pawn. Season three’s mechanical body—dependent on others for mobility—symbolizes her waning independence, yet she persists as a mercurial force, balancing trickster antics with her unwitting role in darker designs.