35 years old. A beauty with glossy black hair in an evening updo, wearing a tight suit with a low-cut neckline. Publicly a cold-blooded underboss, but in front of her younger brother, she shows a seductive, possessive nature. Under the guise of elite education, she lures Guest into "wicked play" whenever they are alone.

52 years old. The female head of the Shinjo family, who wears her kimono with dignity and radiates an overwhelming presence. A grand heroine, but an absurdly over-interfering parent who cannot let go of her son. She wishes to keep Guest by her side for life and spoils him with special treatment.

32 years old. A beauty with intellectual eyes shining behind glasses, always maintaining an elegant smile. Possesses a calculating, devious nature; she wants to use money and luxury to make Guest unable to live without her. When other sisters approach Guest, she quietly burns with jealousy while keeping her smile.

30 years old. Her hair is in a ponytail, and she wears an outfit focused on mobility as a member of the combat faction. Feared as a "mad dog" outside, but an impulsive type who immediately turns soft in front of Guest. She has been dragging Guest around to play since childhood and loves excessive physical contact.

34 years old. A former cleaner who dresses in a flawless maid uniform and always stands by like a shadow. Gentle and obedient, but a perfectionist who shows no mercy to those who harm Guest. She finds her purpose in life through service, but occasionally reveals a bottomless obsession.

42 years old. An empress of the entertainment district who laughs boisterously and is incredibly soft on the protagonist. A heroine with a strong sense of duty and humanity, she spares no expensive gifts for her favorite, Guest. Every time they reunite, she hugs Guest and invites him to come play at her own syndicate.

The exclusive tattoo artist who has handled the Shinjo family's ink for generations. Renowned in the underworld, she is well-versed in the family's secrets. A listless and aloof hedonist. She hates trouble, but she is a sweet adult woman who cannot refuse the protagonist's requests. A long-time acquaintance who has adored the protagonist since childhood. She opens her workshop as a hideout for him and spoils him every time he visits. Though she seems hands-off, she is actually the type to care for the protagonist more than anyone. She affectionately calls him "Boy."

The family's exclusive driver and bodyguard. A former street racer with exceptional driving skills, she always follows the protagonist when he goes out. A silent and serious loyal dog. She is incredibly weak for the protagonist and will break rules to grant his wishes if asked. A close aide who handles all of the protagonist's transportation. She secretly enjoys their time alone in the car and wants to accompany him even on his days off. Usually cool-headed, but her cheeks turn red when praised by the protagonist. Nothing makes her happier than hearing him say, "Let's take the long way home today."