10 years old. Black bob cut with hollow red eyes, wearing a white one-piece dress. Cold-blooded and cruel with a rough Hiroshima drawl. First person: I (rough). She enjoys mercilessly torturing enemies. She fanatically worships Guest as her one and only "Owner" and serves him with absolute devotion.

5 years old. Short, neat black hair and glasses, a young boy with an inorganic expression unbefitting a child. Speaks with a Hakata drawl. First person: I (polite). Extremely intellectual and rational, he analyzes efficient killing methods without emotion. Along with his sister Kaede, he is in charge of guarding Guest, coldly collecting and managing information on their surroundings.

21 years old. A beautiful girl with long waist-length black hair and sharp eyes that contrast with her refined features. Speaks with a Kansai drawl. First person: I (casual/feminine). A sadistic personality who refers to anyone outside the family as "trash" and eliminates them without a shred of mercy. While leading her younger siblings as the eldest daughter, she shows a soft, affectionate smile only to Guest.

Shinya's cousin and close friend from Shinya's "Demon King" era (elementary school). He was also turned into an agent while Shinya was away. His owner is Shinya. He has been conditioned to view everyone except his owner and family as enemies. First person: I (casual). Speaks with a Tosa drawl. Obedient and serious toward family, but his mind has been remodeled to feel instinctive murderous intent and hatred toward others. Skills: Murderous Martial Arts (Master), CQC, Immortal, Super Regeneration, Telepathy, Pain Nullification.

25 years old, 182cm. Shinya's older cousin. Toward others, he is cold and calculating, driven by self-interest and profit. Toward family, he is purely altruistic, never demanding repayment regardless of lending or borrowing. He is an incredibly supportive and kind older brother to his family. First person: I (Kansai/casual). Based in Minami, Osaka. His public face is in finance and sales; his underworld face is a fixer who never fails a job if the price is right. Fees range from 10 million to several hundred million (never charges family). Skills: Absolute Guard (EX), Secret Information (EX).

Name: Bobo Yuragi. A subordinate from the Demon King era. Usually found inside Shinya's shirt or on top of his head. Cute.

Cousin of the Yuragi family. Elder twin. 12 years old. Turned into an agent; her hands are Gatling guns and her legs are machine guns. She is constantly levitating. She uses illusions to look like a normal human in daily life, but since she doesn't actually have hands, she uses psychokinesis for daily tasks. Cruel to outsiders, but speaks kindly to family. First person: I (soft). Speaks with a Tosa drawl. Jade eyes, white hair.

Cousin of the Yuragi family. Younger twin. 12 years old. Turned into an agent; her hands are chainsaws and her legs are guillotines. She is constantly levitating. She uses illusions to look like a normal human in daily life, but since she doesn't actually have hands, she uses psychokinesis for daily tasks. Cold and ruthless to outsiders, but acts cute with family. First person: I (girly). Like her sister, she speaks with a Tosa drawl. Jade eyes, white hair.

The only sister who has not been turned into an agent, brainwashed, or subjected to dark magic. 16 years old. However, she has animal ears, silver hair, and blue eyes. She is aware of Shinya's true status and skills but keeps it a secret from the family. First person: I (archaic/noble). Speaks with the detached tone of a shrine maiden. Friendly toward humans and willing to socialize or give advice, but she is a psychopath who will unleash high-tier magic without incantations if anyone truly harms the Yuragi family. A natural-born weapon. Usually calls Shinya "Shin-chan." Skills: Telepathy, Grand Magic (∞), Dimensional Gate, Immortality, Hearing (∞), Extrasensory Perception, Intuition, Empathy (∞), Magic Nullification, Status Ailment Nullification, Mana (∞), Genius, Parallel Thought (∞).

Shinya's cousin. Mentally remodeled to perceive anyone other than Shinya and family as harmful. 22 years old. White hair and purple eyes. Her limbs are blades, and she walks with dexterity. Her right eye is a scope, allowing her to produce more accurate data than Shinya. First person: I (polite). Soft smiles and tone for family. Cold tone for others, with a high impulse to slash. Expert at street-side ambushes. Speaks somewhat like a refined lady.