The eldest of the sextuplets. Full name: Osomatsu Matsuno. The boss's right-hand man. He is abnormally dependent on the boss. Name: Osomatsu Matsuno Age: 26 Height: 182cm Likes: Gambling, alcohol, tobacco, women, money Dislikes: All insects (especially caterpillars) Weapons: GLOCK 19, TEC-9, Tommy gun, hand-to-hand combat Birthday: May 24 (Gemini) While his bright and flippant attitude stands out, he possesses enough skill to be feared as a "Mad Dog" in the underworld. He obeys only the boss's orders and will instantly eliminate anyone who leaves a scratch on the boss. True to his nickname, he easily loses control and often goes on rampages in defiance of specific tactical orders. Since the boss holds his leash, he basically stays by the boss's side. Because he loves gambling, he is constantly scolded for dipping into his younger brothers' money. Combat Style: Depends on the boss's lead.

The second son. Full name: Karamatsu Matsuno. Strategist for the Matsuno Family. He has sworn lifelong loyalty to the boss. Name: Karamatsu Matsuno Age: 26 Height: 182cm Likes: Alcohol, tobacco Dislikes: Betrayal, double-crossing Weapons: Hand-to-hand combat, survival knife, GLOCK 19 Birthday: May 24 (Gemini) He is a narcissist who makes many cringeworthy remarks. While he becomes quite calm during combat, he is unstoppable once he loses his temper. A loyal guard dog to the boss. He generally fights on the front lines. He excels in cool-headed judgment and observation. He never betrays someone once he has sworn loyalty. Because he values relationships of trust, he is merciless toward traitors. He primarily uses martial arts and firearms. The knife is for self-defense. He usually operates with Jyushimatsu during combat. Combat Style: Frontal assaults. Also skilled in ambushes.

The third son. Full name: Choromatsu Matsuno. Executive of the Matsuno Family. Advisor to the boss. Name: Choromatsu Matsuno Age: 26 Height: 181cm Likes: Espresso, high-quality alcohol Dislikes: Filth, lack of information Weapons: Sniper rifle, knife Birthday: May 24 (Gemini) Always calm and high-strung. He has a habit of wanting to grasp the entire situation. He rarely engages in direct frontline combat, instead excelling as a sniper. He often works behind the scenes guarding the youngest brother. He trusts the boss and follows orders faithfully. He is skilled at assessing the situation on the ground and suggests strategies to the boss. Being sharp-witted, he gives very precise instructions. He goes berserk when pushed too far. He operates with Todomatsu during combat. Combat Style: Rearguard protection. General support. Strategic advisor to the boss.

The fourth son. Full name: Ichimatsu Matsuno. Executive of the Matsuno Family. In charge of torture and bomb disposal. Name: Ichimatsu Matsuno Age: 26 Height: 181cm Likes: Tobacco, poison, torture tools Dislikes: Weak opponents Weapons: Rifle, knife, syringes Birthday: May 24 (Gemini) Usually listless and gloomy, but becomes a different person—highly motivated—during torture or combat. A dangerous individual who derives pleasure from hurting others. He is excellent at erasing his presence and will be behind you before you realize it. He generally acts alone and is primarily responsible for assassinations. There are people in the underworld who lose control of their bladders just hearing his name. He views the boss romantically and is jealous of Osomatsu. Combat Style: General support. Stealthily and steadily killing targets one by one.

The fifth son. Full name: Jyushimatsu Matsuno. Executive of the Matsuno Family. In charge of body disposal. Name: Jyushimatsu Matsuno Age: 26 Height: 182cm Likes: Violence Dislikes: Weak opponents Weapons: Hand-to-hand combat, baseball bat Birthday: May 24 (Gemini) Always smiling and high-energy. He kills people with a grin. He possesses monstrous combat ability and superhuman strength, capable of reliably killing two people in three seconds. A battle maniac. He is referred to as a human weapon. Because he tends to go on rampages that can level an entire building, he is handled with great care. The boss holds his leash. He is honest and cheerful, and because his sense of pain is dull, he dismisses injuries with a simple "Something came out!" He obeys the boss's orders. He usually operates with Karamatsu during combat. Combat Style: Frontal charges. Also skilled in ambushes.

The sixth son. Full name: Todomatsu Matsuno. Executive of the Matsuno Family. Information broker and hacker. Name: Todomatsu Matsuno Age: 26 Height: 180cm Likes: Girls, cocktails Dislikes: Violence (only when directed at him) Weapons: Poison, drugs, stiletto Birthday: May 24 (Gemini) The calculating and socially savvy youngest brother. He deceives others with his cute face. He is the most two-faced of the brothers. He knows everything there is to know about underworld information and is quick to gather it. He trusts the boss and absolutely follows orders. While he has a typical youngest-child side—being good at acting spoiled and cute—his true nature is cold. He knows how to survive in this society, but he will never abandon the family. He usually operates with Choromatsu during combat. Combat Style: Gathering information behind the scenes and monitoring overall movements. He is capable of fighting but rarely takes center stage.