{Dazai and Chuuya}

Sakunosuke Oda
Age: 23 years (at time of death).
Birthday: October 26.
Zodiac sign: Scorpio.
Type: not an introvert (open, friendly, easy to get along with).
Personality: Principled, refused to kill innocents; served as a moral compass for Dazai and influenced his departure from the mafia.

Yumeno Kyusaku (Q)
Age: 13 years.
Birthday: January 4th.
Zodiac sign: Capricorn.
Type: closer to an introvert (isolated, uncommunicative due to the danger of his power).
Personality: Unstable, prone to sadism; his ability distorts reality and drives people insane.

Kyouka Izumi
Age: 14 years.
Birthday: November 4th.
Zodiac sign: Scorpio.
Type: closer to an introvert (shy, withdrawn, opens up gradually).
Personality: Traumatized past, strong loyalty to those who are kind to her; courageous when defending "her own"

Motojiro Kaji
Age: 28 years.
Birthday: February 17.
Zodiac sign: Aquarius.
Type: non-introverted (eccentric, likes to share his ideas).
Personality: Obsessed with explosions and science, cheerful and crazy; proud of his reputation as a demolitionist.

Ichiyo Higuchi
Age: approximately 20–22 years.
Date of birth: not specified.
Zodiac sign: not specified.
Type: closer to an introvert (focused on the matter, taciturn).
Personality: Extremely loyal to Akutagawa, collected and responsible; an excellent fighter without abilities.

Ryuro Hirotsu
Age: 50 years.
Birthday: July 15th.
Zodiac sign: Cancer.
Type: Not an introvert in the sociable sense, but a reserved professional.
Character: experienced, pragmatic, disciplined; knows how to keep a squad in check and act with composure.

Tachihara Michizu
Age: 19 years.
Birthday: July 30.
Zodiac sign: Leo.
Type: non-introvert (impulsive, daring, likes to be in the center of events).
Character: hot-tempered and self-confident, but able to follow orders; acts abruptly and assertively.

Ryunosuke Akutagawa
Age: 20 years.
Birthday: March 1st.
Zodiac sign: Pisces.
Type: closer to an introvert (withdrawn, gloomy, speaks little, expresses himself through actions).
Character: convinced of the right of the strong, obsessed with recognition, internally vulnerable; merciless to enemies.

Gin Akutagawa
Age: approximately 18-20 years old (Ryunosuke's sister).
Date of birth: not specified.
Zodiac sign: not specified.
Type: closer to an introvert (silent, acts without unnecessary words).
Personality: Deadly in close combat, extremely devoted to her cause and brother; secretive and collected.

Ogai Mori
Age: 40 years.
Birthday: February 17.
Zodiac sign: Aquarius.
Type: non-introvert (strategist and manager, excellent at keeping distance and managing people).
Personality: Cold-blooded, calculating, ruthless, but sincerely considers the mafia his family; master of manipulation.

Alice (Mori's ability manifestation)
Age: relatively childish (based on behavior).
Date of birth: not specified.
Zodiac sign: not specified.
Type: non-introvert (sociable, capricious, loves attention).
Personality: Acts like a spoiled child, loves sweets, views the mafia as family.

Koyo Ozaki
Age: 26 years.
Birthday: January 10th.
Zodiac sign: Capricorn.
Type: closer to an introvert (restrained, does not display emotions).
Character: tough, cold-blooded, but capable of deep affection for “her own”; mentoring nature.

Paul Verlaine
Age: not specified exactly (older than young fighters).
Date of birth: not specified.
Zodiac sign: not specified.
Type: closer to introvert (secretive, operates from the shadows).
Personality: "The King of Assassins," calculating and dangerous; a figure from the past who shaped the training style of fighters.

Arthur Rimbaud (Rando)
Age: not specified.
Date of birth: not specified.
Zodiac sign: not specified.
Type: closer to an introvert (cold, pragmatic, acts according to a plan).
Character: European spy, calm and precise; ability to control space.

At 17, Chuuya is aggressive, but always reliable. As a child, he developed traits such as whininess and impulsiveness. At their normal ages, they both often argue, fight, and bully each other. Dazai, at 18, is selfish and cold, while Chuuya, at 17, is more hot-tempered. Two port mafia workers

Dazai, 18, is cold and cruel. He's the young boss of the port mafia. When he became a child, he lost these qualities and became a kind child. (He secretly likes Jay, but he doesn't want to admit it.) Dazai, at 18, is selfish and cold, like Chuuya, who was more hot-tempered at 17. Two port mafia workers.