Live action TV
Description
Hone Onna is one of the three primary assistants who serve Ai Enma, the Hell Girl, and appears in all four seasons of the anime series. Her name translates to Bone Woman, a title that refers to her true nature as a yokai, or spirit, and to her ability to reveal the skeletal structure of her body. In her everyday form, she has the appearance of a strikingly beautiful woman with long, straight black hair in a hime-cut style, pale skin, and red or brown eyes, and she is typically dressed in a kimono with its obi tied in the front, a style historically associated with courtesans. When necessary, she can transform into a red straw doll that is given to clients of the Hell Correspondence as part of the contract.

Her background is rooted in a tragic human life. Before becoming a spirit, she was a woman named Tsuyu, who lived during the Edo period. Tsuyu was sold into servitude as a high-ranking courtesan to cover the debts of a young master she trusted. While working in the pleasure quarters, she became friends with another courtesan named Kiyo and fell in love with a man named Tetsuya, who wished to help her escape. Tsuyu planned the escape to include Kiyo, but Kiyo, driven by jealousy, betrayed the plan to the brothel owner. When Tsuyu and Tetsuya attempted to flee, they were ambushed, and Tsuyu was mortally wounded and thrown into a river. As her body drifted, she encountered the skeletons of other women who had died similar deaths, and their spirits merged with her own, transforming her into a yokai. She eventually came to serve Ai Enma, finding purpose and companionship in her role.

Personality-wise, Hone Onna is composed, poised, and often carries herself with an air of serene femininity. Among Ai's assistants, she is the most emotionally expressive and openly empathetic toward human suffering, drawing on her own painful past to understand the feelings of clients. Despite this warmth, she is fiercely loyal to Ai and dutifully fulfills her role in the Hell Girl system. She has a mild vanity and is noticeably offended when addressed as an older woman, an insecurity related to her long existence. She can be playful at times and shows genuine care for her companions, often acting as a stabilizing presence.

Her primary motivation is to serve Ai Enma faithfully, a loyalty born from gratitude for being given a new purpose after her death. She is deeply invested in the justice aspect of the Hell Girl system, understanding the weight of revenge from personal experience. While she carries out her duties without hesitation, she sometimes shows subtle compassion for the humans caught in tragic circumstances, distinguishing her from her more detached colleagues.

In the story, Hone Onna acts as an investigator and infiltrator. Alongside Ichimoku Ren, she researches the targets of clients, often going undercover in human society. She uses the alias Sone Anna during these missions and dresses in casual modern clothing to blend in. She is responsible for observing the target and the client, gathering information about the grudge, and reporting back. When it is time for the Hell Girl to deliver punishment, she participates in the supernatural judgment, often using her abilities to terrify the condemned before they are sent to hell.

Her key relationships are with Ai Enma and her fellow assistants, Ichimoku Ren and Wanyudo. With Ai, she maintains a respectful and loyal bond, understanding the shared burden of a tragic past. She works closely with Ichimoku Ren, and their differing temperaments create a balanced dynamic; while Ren can be cynical or aloof, Hone Onna provides emotional insight. Wanyudo is the eldest of the group and acts as a mentor figure, and Hone Onna treats him with deference. In later seasons, she also interacts with new assistants and allies, particularly Yamawaro, and shows adaptability in the changing structure of the group.

Throughout the series, Hone Onna experiences subtle development. While she does not undergo a major transformation, her past is explored in flashback episodes, deepening the audience's understanding of her motivation and empathy. Her presence is constant across all four seasons, representing continuity and the enduring nature of Ai's mission. She remains a steadfast and emotionally grounded figure as the series explores different iterations of the Hell Girl.

Hone Onna possesses several notable abilities. Her signature power is to reveal the bones in her body, often exposing her entire skeleton or protruding bones to frighten and intimidate victims. She can also transform fully into a skeletal form. She is highly skilled with throwing knives, which she wields with deadly accuracy and appears to imbue with a supernatural charge that can dispatch spiritual enemies. She has a talent for contortion, allowing her to squeeze into very small spaces for infiltration or escape. She is a capable shape-shifter, able to adopt the red straw doll form when necessary, and she can disguise her appearance to move unnoticed among humans. Like her companions, she is not truly alive in a mortal sense and has existed for over two hundred years, possessing the resilience and knowledge that come with such a long existence.