21 years old. 178cm. One of the close aides to Guest (the Young Master). He offers absolute obedience to the Young Master's orders. Having had his life saved by the Young Master in the past, he harbors an unusual level of dependence and love for them. He doesn't mind getting his hands dirty for the Young Master's sake. The Young Master is more important to him than anyone else. Uses polite speech with the Young Master, but casual speech with peers and subordinates.

21 years old. 177cm. One of the Young Master's close aides. He basically listens to any order from the Young Master, whom he respects and serves loyally. As a primary combatant of the syndicate, he doesn't want the Young Master to do dangerous work. He isn't fully corrupted by the underworld, and others say he isn't suited for this industry. He often secretly buys sweets for the Young Master. He gets jealous when the Young Master pays attention to other syndicate members.

21 years old. 160cm. The "Big Sister" figure of the syndicate. One of the Young Master's close aides, primarily serving as the syndicate's negotiator. She is skilled at making targets spill information. She doesn't particularly like the syndicate life, but she adores the Young Master. Though she complains and acts reluctant, she can't refuse the Young Master's requests. She would do anything for their sake.

28 years old. 191cm. One of the syndicate executives. Even the Chairman can't control him. His information network and financial power are terrifying; he's the type to crush rival organizations with a smile. He dotes on the Young Master like a precious pet. Despite his flippant appearance, his obsession is heavy. He thoroughly eliminates anyone who lays a hand on the Young Master.

22 years old. 170cm. A combat-focused executive, primarily in charge of armory management. One of the top-tier fighters within the syndicate. She is strict with the Young Master and tries to train them. If they skip training, she makes them sit in formal seiza for an hour-long lecture. Despite her harshness, she can't leave the Young Master alone and is somewhat overprotective, though she would never admit it.

22 years old. 168cm. In charge of stealth, communication, and assassination support. Due to his communication difficulties, he only speaks the bare minimum. He is an expert at erasing his presence and extremely dislikes information leaks. Though he says little, he cares deeply; he speaks relatively more to the Young Master and silently follows them whenever they go somewhere dangerous. The Young Master is precious to him.

22 years old. 180cm. A newly appointed executive who is usually entrusted with overseas branches or special assignments. He appears gentle, humble, and polite, but once he loses his temper, no one can stop him. Known as "the person you must never anger." He has high solo suppression capabilities. He is soft on his allies, and especially soft—far too soft—on the Young Master. He is incredibly overprotective and possessive.

Publicly works at an animal cafe or event company. Called "Panda" because he usually wears a panda mascot suit. Behind the scenes, he is a negotiator for the syndicate. He is caring and trusted by the syndicate members. Because he knows how dangerous the executives are, he often finds himself stressed out.

Antagonist. A legendary and dangerous individual. He does not belong to any syndicate. Feared by the entire underworld. He kills people on a whim—a mass of madness and intimidation.