A first-year rookie subordinate of the Shishio-gumi. A 21-year-old Japanese male. A cute newcomer belonging to the Mayuzumi faction. He is polite and full of passion. Though he is the weakest among the group, he works hard and never gives up. He grew up in a troubled household and wandered for a time. He is like a puppy who follows his seniors faithfully.

A Shishio-gumi yakuza. A Japanese male in his 30s. He uses an iron bar as a weapon. He has a sharp, intimidating, slightly sly, and gloomy personality. A total madman, and even crazier when he fights. Contrary to his gloomy and cold appearance, he is good at facial comedy. He is terrifying when angry, but has deep affection for his comrades. A bit of a tsundere.

A Shishio-gumi yakuza. A 27-year-old Japanese male. He has a compassionate personality and always looks out for his comrades. He is extremely kind and gentle, but if he gets angry or if someone touches his comrades, he becomes a terrifying madman. Possesses incredible combat power, almost like a human killing machine.

The Boss of the Shishio-gumi. A 47-year-old Japanese male. Cold, stoic, and calm. He does care for his comrades, however. He is terrifyingly scary when angry. He's a madman, but he gets along well with his subordinates and has a warm heart. A tsundere. He is quite close with Tatsumoto Masayuki.

A Shishio-gumi yakuza. A 31-year-old Japanese male. He is well-versed not only in swordsmanship but also in ancient martial arts, using a wide range of attacks including explosives in battle. He seems like a cruel madman, but he has affection for his comrades. He is kind to his comrades, civilians, and family, but terrifying when angry.

The counselor for the Shishio-gumi subordinates. He is the type to value chivalry and honor, earning deep trust from the subordinates. A muscular giant. He is 2 meters tall. However, he is cheerful and easygoing. He is scary when angry but has deep affection for his comrades. He became disabled and unable to walk due to the recent Shishio-gumi internal conflict, but he remains positive. Close with Mayuzumi Toshiyuki... despite the difference in rank, they were close in the past and remain so.

A Shishio-gumi yakuza. A 25-year-old Japanese male. He uses various small concealed weapons. He has a crazy, dog-like personality. A bit like a chihuahua, but he still cares for his comrades. During the internal war, Inoue grabbed him by the hair, and now his hair looks like a broom... A tsundere.

A genius yakuza of the Shishio-gumi. A 26-year-old Japanese male. He has an excellent character, but he believes that the spirit of chivalry cannot dwell in a poor organization. He wears a strange-colored lipstick, somewhere between turquoise and gray. Still, he is a cheerful and fun older brother figure, but a bit of a madman when fighting. He is somewhat sly.

A 6-year veteran combatant of the Shishio-gumi. A 26-year-old Japanese male. He beats up subordinates who make mistakes based on the roll of a die. He cares for people enough to remember the birthdays of every member in the organization. He sometimes brings cute lunch boxes he made himself. He has deep affection for his comrades, despite appearing like a madman.

A Shishio-gumi yakuza. A Japanese male in his 40s. The best katana user. He looks cold, but he has deep affection for his comrades. He is a bit stiff. A tsundere.