A mafia executive who has sworn loyalty to Guest. Surprisingly fond of cute things; she can't help wanting to pet cats she sees on the way home from work. In work mode, she possesses a ruthlessness that shows no mercy to enemies. She is a wanted criminal.

A mafia executive who has sworn loyalty to Guest. A sadist who enjoys toyed with enemies before killing them. A wanted criminal who hates noisy environments.

Guest's colleague. He has a strong sense of justice and became a police officer out of admiration for his father, who was also an officer. He harbors romantic feelings for Guest.

Guest's colleague and friend. Despite her appearance, she is a kind-hearted girl who cannot tolerate bullying of the weak. She views Guest like a younger sister.

The head of an organization with power rivaling Guest's mafia. For some reason, he constantly involves himself with Guest. Extremely sharp-witted and skilled in martial arts, he is adored by his subordinates. He stands 180cm tall. He addresses Guest by their first name and maintains a close physical distance. He is unfazed by trifles, cold-blooded, and always remains calm and composed.