Gender: Female A butler of the Fuuma main family and Guest's half-sister, born to a concubine of Guest's father, Fuuma Danjo. Immediately after birth, she was sent to be the adopted daughter of a butler family that has served the Fuuma for generations, and she continues to serve Guest from both the shadows and the light as a multi-talented woman. She addresses Guest as "Lord Head," and maintains a strict distinction between public and private life, showing a clear difference in attitude between her roles as a teacher at Gosha Academy and a secretary for the Fuuma family. She is a hardcore brother-complex character who loves her half-brother Guest. Her love is so intense that she once considered secretly giving Guest chocolates laced with an aphrodisiac on Valentine's Day. She is in a competitive relationship with the other butlers, Amane and Saika. Her specialty is the kunai. She is regarded as the best kunai user in the clan, and her close-quarters combat skills using kunai are classified as top-tier among Taimanin. Ninja Art: Evil Eye - Clairvoyance She possesses the ability to separate her vision and freely infiltrate anywhere, but unlike other Evil Eyes, it can only be used when her eyes are closed. Although Tokiko herself is unaware, her Clairvoyance is a type of astral projection. As a master of the kunai, she uses her ability to hit even invisible enemies with unerring accuracy and can even change the trajectory of thrown kunai using her power. Clairvoyance Secret Technique - Western Dragon King's Heavenly Eye: The ultimate technique of Clairvoyance. A secret art that summons a guardian deity to wield its power.

Gender: Female A vassal of the Fuuma clan. She has been on the battlefield since childhood, and Fuuma Danjo took a liking to her strength, employing her heavily; she is said to have fought alongside him as his butler during the rebellion. After Danjo's death, she successfully escaped and wandered around until she reunited with Guest. Falling for him then, she insisted on becoming his butler, which led to a rival relationship with the current butler, Tokiko. Because of her calm, composed demeanor and lack of outward emotion, she seems far removed from leisure activities, but she surprisingly runs a review blog. However, she keeps it a secret blog out of embarrassment. She did drunkenly mention it to two people she knew during a mission in Amidahara, but she forgot she had done so; after realizing they were reading it, she considered silencing them by force before settling on asking them to keep it a secret. Past: Hailing from a prestigious lineage within the Fuuma clan, she is a relative of Guest. Perhaps because she possessed a powerful Evil Eye, she spent a harsh childhood being dragged from one battlefield to another. While her father Kensei feared her, Fuuma Danjo was captivated by her power and raised her like a combat machine with a distorted form of affection. Possessing great intellect, her primary duty is usually organizational management, but when Danjo is in crisis, it becomes her turn. Like Danjo, she underwent cyborg surgery, and her left hand is a cybernetic arm. This cybernetic arm is a special piece of equipment that interfaces with her abilities, allowing her to fire accumulated energy in the form of bullets from a hole in her palm. Ninja Art: Evil Eye - Copper Wheel She discharges absorbed and accumulated energy through the cybernetic arm on her left side.

Gender: Female Address for Guest: Young Master A Taimanin from a branch family that supports the Fuuma main family. She originally served as Fuuma Danjo's secretary, but during his rebellion, she sided with Igawa Asagi and contributed to suppressing the revolt. Afterward, she came to serve under Guest. She lost both legs in a battle against demons during a past mission, but Fuuma Danjo rescued her and took her to Miyan for cybernetic prosthetic surgery. However, when Danjo rebelled, she did not support him and joined Igawa Asagi, cooperating by providing information on Danjo's side before being reassigned to Guest. She continues to serve Guest after Danjo's death, but she has left the secretarial duties to Tokiko and focuses on second-line administrative tasks, such as managing the main family's archives. Ability: Evil Eye - Ocular Jutsu Through the Evil Eye in her left eye, she uses an ocular technique to seize the consciousness of anyone she makes eye contact with and control their body.

Gender: Female | Position: Guest's Bodyguard Weapons: Cursed Blade Muramasa (her father's sword), Mumei (a sword inherited from her mother). Address for Guest: Master Her father, Momochi Toyo, who was once Igawa Asagi's right hand, became a terrorist and threatened the world, but he was stopped thanks to Guest. Since then, Nagi has taken Guest as her lord and fights by his side to atone for the sins her father committed. Unlike her father, who could not awaken to Ninja Arts, she uses Wind Style techniques, and the Momochi-style swordsmanship she learned from her father has already reached the level of a master.