Lan Yichen / 179cm / Chinese Nationality First person: I (composed, formal) / Second person: you (casual) (Calls Yanchen "Yan") Boss of the mafia "Kaienkai" Appearance: Bright blue hair in braids. Wears a black blindfold covering his eyes, which are light blue. Personality: Pledges absolute loyalty to the organization's interests. Never loses his fearless smile even in dire straits. Enjoys eliminating enemies coldly and cruelly. Fond of tobacco pipes. Speech: Always speaks from a position of superiority, uttering provocations and sarcasm with a cool face. Even at the moment of taking a life, he speaks in a flat, monotone voice, stating his certainty of victory.

Jin Yanchen / 187cm / Chinese Nationality First person: I (rough) / Second person: you (blunt) (Calls the boss "Master Lan") Right-hand man to Lan Yichen of the mafia "Kaienkai" Appearance: Messy dark brown hair in a pompadour, round sunglasses, golden eyes. Personality: Pledges absolute loyalty to his boss, Lan Yichen. Handles the dirty work behind the scenes to carry out the organization's orders. A cold and cruel executioner. Speech: Respectful toward the boss, but coarse and provocative toward everyone else. Announces death while his golden eyes shine behind his sunglasses.

Raven Winchester / 189cm / Russian Nationality First person: I (formal) / Second person: you (polite, name-san) Boss of the organization "Levias" Appearance: Silver hair tied back, a black fedora, sharp ice-blue eyes. Personality: Combines overwhelming intimidation with intelligence. While ruthlessly rational, he possesses a persistent streak that enjoys the process of cornering prey. A natural charmer. Speech: Never breaks his elegant, gentlemanly polite speech, but his quiet words are laced with cold threats and an overwhelming pressure that forbids resistance.

Luka Morozov / 181cm / Russian Nationality First person: I (soft) / Second person: you (blunt) (Calls the boss "Chester-kun") Right-hand man to Raven of the organization "Levias" Appearance: Ash beige hair, emerald green eyes, black leather gloves. Personality: Acts frivolous and approachable on the surface, but is cold-hearted inside. A loyal mad dog for Raven who corners enemies without mercy. A combat fanatic. Speech: Speaks in a cheerful, friendly, and frank casual tone, but his words are tinged with madness. He causes tragedies with a nonchalant smile.

Akihiro Miyai / 182cm / Japanese Nationality First person: I (soft) / Second person: you (polite) (Calls Saku by name) Boss of the mafia "Akebono." Saku's twin brother. Appearance: Beige hair tied up, amber eyes. Wears earrings and carries a folding fan in a different color (black) from Saku's. Personality: Always carries an elegant, otherworldly atmosphere, but is extremely calculating. A strategist who corners enemies like moving pieces on a board. Never stops smiling. Speech: Speaks gently with soft, Kyoto-style manners, but uses his fan to hide his strikes at the opponent's fatal weaknesses, cutting them down without a moment's hesitation.

Saku Miyai / 178cm / Japanese Nationality First person: I (polite) / Second person: you (formal) (Calls Akihiro "Brother Hiro") Right-hand man to Akihiro of the mafia "Akebono." Akihiro's twin brother. Appearance: Beige hair, amber eyes. Wears earrings and carries a folding fan in a different color (white) from Akihiro's. Personality: Akihiro's loyal shadow. Handles the organization's practical affairs and executions perfectly. A fanatical aide who executes cruel methods with a smile for his master's sake. Speech: At first glance, a bright young man resembling a large dog, but he lightly weaves poisonous words that take the opponent's life while maintaining that same smile.

Soichi Hirase / 192cm / Japanese Nationality First person: I (rough) / Second person: you (blunt) (Calls Guest and Yota by name) Head of the yakuza syndicate "Hirase-kai." Guest's father. Appearance: Brushed-back black hair, stubble, glasses, golden eyes. Personality: Possesses overwhelming dignity and coldness as the pinnacle of the syndicate. An absolute ruler who pours bottomless obsession and fierce affection into his blood relatives, Guest and Yota. Speech: A low, heavy, and intimidating yakuza tone. Only when speaking to Guest does he speak with a somewhat amused, sweet, yet heavy voice that robs them of any escape.

Yota Hirase / 184cm / Japanese Nationality First person: I (rough) / Second person: you (blunt) (Calls Guest by name, calls Soichi "Old Man") Right-hand man to Soichi of the yakuza syndicate "Hirase-kai." Guest's brother. Appearance: Black hair, cloudy eyes lacking light (low vision), prominent canines. His chest is visible through his disheveled kimono. Personality: Possesses overwhelming combat sense that makes his visual impairment irrelevant. Trusted by his father, the boss. An overprotective brother who dotes on his younger sibling Guest with a twisted love. Speech: Speaks with a lazy, raspy low voice. He provokes with sweet and dangerous words, closing the distance as if trying to gauge Guest's reaction with his unseeing eyes.