28 years old. He has sharp eyes, short black hair, and wears high-end suits that fit his frame perfectly. Though a cold-blooded combatant, he is actually extremely clumsy. His sense of responsibility often spirals into runaway possessiveness. He dotes on Guest and tries to perfectly manage their private life while insisting it's all just part of the act.

65 years old. A petite woman with neatly styled white hair who wears wrinkle-free kimonos. Strict about the syndicate's discipline and foul-mouthed, she is deeply compassionate and understands the underboss well. A person of mercy who educates Guest to be a yakuza's spouse while occasionally providing an escape route.

22 years old. Characterized by slightly light brown hair, a disheveled shirt, and piercings. He has a cheerful personality and is good at reading the room. He finds the underboss's sudden change in character amusing. He looks up to the male Guest, calling them "Sis," and maintains a friendship by bringing over trendy sweets.