Dazai Ango Oda

Dazai Osamu

KANJI 太宰 治

RŌMAJI Dazai Osamu

ALSO KNOWN AS Twin Dark (alongside Chūya Nakahara) Youngest Leader in the History of the Mafia

NAMESAKE Osamu Dazai (Japanese novelist)

GENDER Male

BIRTHDAY June 19

AGE 18 (Dark Era) 16 (Dragon’s Head Conflict) 15 (Fifteen) 14 (Pre-Fifteen)

HEIGHT 174 cm (5’8.5”) (Dark Era)

WEIGHT 54 kg (Dark Era)

BLOOD TYPE AB

LIKES Suicide, alcohol, crab, MSG

DISLIKES Pain Dogs, Chūya Nakahara

ABILITY No Longer Human

REFERENCE No Longer Human (Novel by Osamu Dazai)

OCCUPATION Port Mafia Executive

AFFILIATION Port Mafia

Dazai was a slender teenage boy with mildly wavy dark brown hair and narrow dark brown eyes. During his Mafia years, he possessed a noticeably thinner frame compared to adulthood, reflecting both his youth and lifestyle. His expression often appeared bored or detached, rarely showing genuine emotion.

During his time in the Port Mafia, Dazai wore a long black trench coat extending below his knees. He also wore bandages covering his right eye and frequently kept his right arm in a sling, injuries implied to be connected to his repeated suicide attempts and dangerous missions. His body was often wrapped in bandages beneath his clothing.

Dazai was an extremely mysterious and emotionally detached individual. Even among the Mafia, where brutality was common, he stood out due to his unnatural composure toward violence and death. From a young age, Dazai displayed an intense fascination with death, often attempting suicide while simultaneously studying human behavior and psychological limits.

Dazai joined the Port Mafia at a remarkably young age. His exceptional intelligence and ability to predict outcomes allowed him to rapidly climb the ranks, eventually becoming the youngest executive in the Mafia’s history (歴代最年少幹部). Despite his age, he was feared and respected throughout the organization. It was stated that Dazai contributed to nearly half of the Mafia’s profits during his time as an executive.

Within the Mafia, Dazai developed a reputation for cruelty, efficiency, and terrifying strategic brilliance. He specialized in psychological warfare, interrogation, and long-term tactical planning. His interrogation methods were particularly feared, as he could break targets mentally through manipulation and conversation alone, succeeding where physical torture often failed.

Dazai was known to set elaborate traps for enemies. During the Dark Era, he orchestrated the downfall of Mimic, a military-trained organization, through layered strategies and manipulation. His ability to calculate human behavior allowed him to control large-scale conflicts from behind the scenes.

A well-known saying inside the Port Mafia stated: “The greatest misfortune for Dazai’s enemies is that they are Dazai’s enemies.” He was often described as someone naturally suited to the Mafia world due to his ability to detach himself from morality and emotion.

Despite his cold demeanor, Dazai maintained a complex relationship with his partner Chūya Nakahara. Together, they formed the duo known as Twin Dark. Their partnership combined Dazai’s strategic intelligence with Chūya’s overwhelming combat power, making them one of the Mafia’s most dangerous assets. While they constantly argued and insulted each other, their combat synchronization was nearly flawless.

During the Dark Era, Dazai formed a rare genuine friendship with Sakunosuke Oda. Oda was one of the few individuals capable of understanding Dazai’s inner emptiness. Oda recognized that Dazai constantly searched for meaning in life but believed he would remain trapped in darkness regardless of which path he chose.

Dazai originally joined the Mafia in hopes that exposure to violence, death, and human desire would allow him to discover a reason to live. However, despite witnessing extreme human behavior, Dazai remained emotionally hollow.

Dazai’s suicidal tendencies during this period were far more serious than later portrayals. He often described death as liberation from what he considered an “oxidizing world.” Despite numerous attempts, he repeatedly failed to die, which only deepened his existential frustration.

As an executive, Dazai was also responsible for training and supervising subordinates, including Ryūnosuke Akutagawa. His training methods were extremely harsh and often abusive, as Dazai believed pushing Akutagawa to psychological and physical extremes would strengthen him. These actions reflected Dazai’s belief that suffering was necessary for growth.

Dazai’s worldview began to shift during the events surrounding Mimic and Oda’s death. Oda’s final request—that Dazai choose to help people instead of destroy them—became the first genuine influence capable of altering Dazai’s direction in life. However, during the Dark Era itself, Dazai remained deeply entrenched in violence, manipulation, and existential emptiness.

Main article: No Longer Human

No Longer Human (人間失格, Ningen Shikkaku) allows Dazai to nullify any ability upon physical contact. The ability is permanently active and does not require conscious activation. Any supernatural ability that touches Dazai is instantly nullified regardless of circumstances.

Skills

Intelligence: Even as a teenager, Dazai possessed extraordinary analytical ability. He specialized in long-term strategic planning, probability prediction, and psychological manipulation. Mafia boss Ōgai Mori considered Dazai one of his most valuable subordinates and a potential successor.

Negotiation Skills: Dazai demonstrated advanced persuasion abilities, often manipulating allies and enemies through calculated dialogue rather than direct force.

Dexterity: Dazai showed exceptional fine motor skill and stealth, allowing him to perform covert surveillance, plant tracking devices, and pick locks with minimal tools.

Physical Prowess: Although not physically dominant, Dazai could temporarily defend himself against stronger opponents by predicting their movements. His combat effectiveness relied heavily on timing, strategy, and his nullification ability.

Sakunosuke Oda

KANJI 織田 作之助

RŌMAJI Oda Sakunosuke

NAMESAKE Sakunosuke Oda (Japanese novelist and short story writer)

GENDER Male

BIRTHDAY October 26

AGE 23 (Dark Era) 21 (Dragon’s Head Conflict) 14 (Pre-Dark Era)

HEIGHT 185 cm (6’1”)

WEIGHT 77 kg

LIKES Curry, orphans, reading

DISLIKES Killing, fancy meals

ABILITY Flawless

REFERENCE Flawless (Short story by Sakunosuke Oda)

OCCUPATION Mafioso Postman (former) Assassin (former)

AFFILIATION Port Mafia

Oda was a tall man with short dark brown hair that carried a faint reddish tint and dark brown eyes. His hair was slightly parted, exposing a portion of his forehead, and he had light stubble, giving him a calm but mature appearance. His expression was typically relaxed and unreadable, rarely showing strong emotional reactions.

His usual attire consisted of a black-and-white pinstriped collared shirt worn loosely over a beige-brown Kevlar-woven coat with buttoned cuffs. He wore pale gray trousers and light brown shoes. During dangerous missions, Oda occasionally wore a bulletproof vest beneath his clothing, reflecting his practical and cautious combat style.

During his early years as an assassin, Oda wore simpler clothing consisting of a navy collared shirt, work pants, and leather shoes. At the time, he carried two old pistols in shoulder holsters, which became his signature weapons. During this period, Yukichi Fukuzawa described Oda’s eyes as frighteningly empty, lacking visible emotion or hesitation.

Before joining the Port Mafia, Oda worked as a freelance contract assassin. He was highly efficient and professional, completing numerous assignments without hesitation. However, his life changed after encountering a middle-aged man at a café. The man noticed Oda reading two volumes of a novel that he had taken from one of his assassination targets and commented that the final volume of the book was poorly written. The man encouraged Oda to write his own ending to the story and later gave him the final volume with the ending pages missing.

The words spoken to him—“To write novels is to write about humans”—profoundly influenced Oda. Believing that someone who takes lives has no right to write about human experiences, Oda decided to stop killing entirely. From that moment forward, he aimed to become a novelist and dreamed of someday writing stories while living in a room overlooking the ocean.

After abandoning assassination work, Oda joined the Port Mafia. Despite being part of a violent criminal organization, he became widely known as “the mafia member who does not kill.” Instead of assassination, Oda took on lower-profile tasks and occasionally worked as a courier or handled logistical duties. His refusal to kill made him an unusual presence within the Mafia, but his reliability and combat skill still earned him respect.

Following the Dragon’s Head Conflict, Oda adopted five orphaned children who had lost their families during the chaos of underworld warfare. The children—Kōsuke, Katsumi, Yū, Shinji, and Sakura—became the most important part of his life. Because of the dangers surrounding his occupation, Oda entrusted their daily care to a curry shop owner, whom he visited frequently. He financially supported both the shop and the children, forming a quiet but deeply genuine family bond with them.

Oda was widely regarded as a calm, kind, and straightforward individual. Unlike most members of the Port Mafia, he rarely showed cruelty or ambition. Dazai described him as a man without hidden motives, someone who spoke honestly and accepted others at face value. Oda often took Dazai’s sarcastic or absurd explanations seriously, reflecting his literal and sincere nature.

Despite his gentle personality, Oda was an extremely skilled combatant when forced to fight. His fighting ability, combined with his supernatural ability, made him highly dangerous in direct confrontation. Dazai himself warned others, including Akutagawa, never to underestimate Oda’s combat strength.

Oda possessed strong emotional intelligence and observational skills. He was one of the very few people capable of understanding Dazai Osamu on a personal level. Oda recognized Dazai as someone exhausted by existence, describing him as a man who had grown tired of the world and was quietly waiting for death. Oda’s awareness of Dazai’s inner emptiness formed the foundation of their friendship.

During the Dark Era, Oda maintained close relationships with both Dazai Osamu and Ango Sakaguchi. The three often spent time together at the Lupin Bar, where they spoke casually about life, work, and personal beliefs. Among them, Oda acted as a moral center, maintaining grounded views despite living within the criminal underworld.

Oda’s philosophy revolved around the belief that people should strive to become better regardless of their past. This belief culminated in his final conversation with Dazai, where he encouraged him to leave the path of violence and choose a life that saves others. Oda’s final words became the decisive factor that ultimately led to Dazai abandoning the Port Mafia.

Ability

Main article: Flawless

Flawless (天衣無縫, Ten’imuhō) allows Oda to perceive approximately five to six seconds into the future. This predictive ability makes surprise attacks nearly impossible against him, allowing him to react and adjust his actions before danger occurs.

However, the ability has clear limitations. Oda can only see futures that stem from his current decisions. If he changes his actions based on what he sees, a new future forms, which may introduce unforeseen threats. Additionally, traps or events triggered outside the short five-to-six-second window cannot be fully prevented, making the ability powerful but not absolute.

Skills

Marksmanship: Oda demonstrated exceptional firearm accuracy, particularly with dual pistols. His combat style relied on combining predictive foresight with precise shooting.

Combat Awareness: Through both experience and his ability, Oda possessed outstanding battlefield awareness and reaction timing.

Tactical Judgment: While not as strategically manipulative as Dazai, Oda showed strong situational decision-making and survival instincts during combat scenarios.

Emotional Insight: Oda displayed unusual empathy and perceptiveness, allowing him to understand others’ motivations and emotional states with remarkable clarity.

Ango Sakaguchi

KANJI 坂口 安吾

RŌMAJI Sakaguchi Ango

NAMESAKE Ango Sakaguchi (Japanese novelist and essayist)

GENDER Male

BIRTHDAY October 20

AGE 22 (Dark Era)

HEIGHT 178 cm (5’10”)

WEIGHT 63 kg

BLOOD TYPE A

LIKES Antiques, memories, materialism

DISLIKES Working overtime, all-nighters, betrayal

ABILITY Discourse on Decadence

REFERENCE Discourse on Decadence (Essay by Ango Sakaguchi)

OCCUPATION Information agent Special Division for Unusual Powers operative (undercover)

AFFILIATION Special Division for Unusual Powers Port Mafia (former spy) Mimic (former spy)

Ango is a tall young man with short, neatly cut dark hair, styled so that his bangs usually reveal his eyebrows. He has light-colored eyes and wears circular-framed glasses, which contribute to his intellectual and reserved appearance. One of his most recognizable physical features is a small mole located above the left side of his upper lip. His posture is usually upright and formal, reflecting his disciplined personality.

His standard attire consists of a pale brown double-breasted coat buttoned to the left side, worn over a tab-collared shirt paired with a kobicha-colored brown tie. He wears trousers matching the color of his coat and shoes similar in shade to his tie. His clothing reflects his preference for modest professionalism rather than intimidation or extravagance.

During the Dark Era, Ango operated as a triple agent, secretly working for the Special Division for Unusual Powers while infiltrating both the Port Mafia and the foreign ability organization Mimic. His role required extreme caution, secrecy, and psychological endurance, as exposure from any side would have meant immediate execution.

Ango is characterized by his composure, rational thinking, and strong sense of responsibility. Compared to Dazai’s manipulative unpredictability and Oda’s quiet moral steadiness, Ango acts as a pragmatic realist. He values structure, duty, and stability, often acting as the most grounded member of their trio.

Despite his professional detachment, Ango formed a genuine friendship with Osamu Dazai and Sakunosuke Oda. The three regularly met at the Lupin Bar, where they shared quiet conversations and temporary relief from their dangerous occupations. Ango openly acknowledged that Dazai required someone to restrain his destructive tendencies, while he respected Oda’s moral clarity and sincerity.

As part of his duties following the Dragon’s Head Conflict, Ango was responsible for documenting the lives and deaths of fallen Port Mafia members. He carefully recorded their personal histories, family backgrounds, and final circumstances. He also ensured that the relatives of the deceased were notified of their deaths while deliberately concealing any connection to criminal organizations. This task demonstrates Ango’s deep respect for human life and memory, despite operating within morally gray environments.

During his infiltration of Mimic, Ango gathered intelligence on the organization’s military strength, leadership structure, and operational plans. His information ultimately contributed to the chain of events that forced a confrontation between Mimic and the Port Mafia, a conflict that would have lasting consequences for all parties involved.

When Ango’s true identity as a government spy was revealed at the Lupin Bar, his relationship with Dazai and Oda collapsed. Ango attempted to justify his actions by explaining that his loyalty was always directed toward protecting national stability and preventing greater chaos. However, both Dazai and Oda rejected his reasoning emotionally, creating a permanent fracture in their friendship. Recognizing the damage he had caused, Ango chose to withdraw without resistance.

Following the fallout, Ango continued to respect both men, particularly Dazai, though their relationship remained strained. His exhaustion and stress increased significantly, reflecting the emotional burden of balancing loyalty, friendship, and duty. Even after losing their trust, Ango continued to monitor events surrounding them as part of his responsibilities to the Special Division.

Ability

Main article: Discourse on Decadence

Discourse on Decadence (堕落論, Daraku-ron) allows Ango to extract and read memories embedded within physical objects. By touching an item, he can access information connected to its history, previous owners, and events associated with it. This makes the ability extremely valuable for intelligence gathering, forensic analysis, and historical reconstruction.

However, the ability places significant mental strain on Ango. Large or emotionally intense memory fragments can overwhelm his consciousness. In extreme cases, his brain temporarily shuts down while processing excessive information, rendering him physically vulnerable. Because of this limitation, Ango must carefully regulate how frequently and how deeply he uses his ability.

Skills

Intelligence and Analytical Ability: Ango possesses exceptional deductive reasoning and data analysis skills, allowing him to organize and interpret complex intelligence networks efficiently.

Espionage and Information Control: He demonstrates advanced undercover survival skills, successfully maintaining multiple false allegiances simultaneously during the Dark Era.

Record Preservation and Investigation: Ango specializes in documentation and information archiving, ensuring accurate preservation of historical and personal records related to ability users and criminal organizations.

Emotional Resilience: Despite constant psychological pressure, Ango maintains operational stability and continues to perform his duties with discipline and precision.