Osamu Dazai

"Motto: Have a pure, cheerful, and energetic suicide."

Osamu Dazai (太宰治,) is a member of the Armed Detective Company and was a former member of the city's worst underworld organization, the Port Mafia.

Appearance
Dazai has mildly wavy, short dark brown hair and narrow dark brown eyes. His bangs frame his face, while some are gathered at the center of his forehead. He is quite tall and slim in physique.

For his attire, Dazai wears a long tan trench coat over a black vest and a striped dress shirt that is light blue in hue. He has a bolo tie around his collar, which is held by a brown ribbon and a turquoise pendant. He also dons beige pants, dark brown shoes, and has bandages wrapped around his neck and forearms, the reasons for the bandages are yet to be discovered.

In the mafia, Dazai wore a dark trench coat that reached under his knees. He also wore an eye patch which took up half of his face.

Personality
Dazai is a mysterious person, his true intentions are never revealed unless he himself reveals them.

Dazai is usually called lazy as Kunikida always scolds him for being unproductive and slacking off. Despite that, he has shown a sharp wit, deducing all the unlikely situations that led Atsushi to believe he was being stalked by a tiger when he actually was the tiger in question. He has complete confidence no matter what type of situation he is dealing with, be it combat or simply bad situations he himself created in the first place. In most occasions, Dazai is overly dramatic, he takes most of his actions as a joke, and although they are very thought out plans he does not credit himself for most of what he has done.

Aside from his quick thinking, Dazai is the comic relief in the series and at times Dazai's soft side can be seen.

Ability
His ability, No Longer Human (人間失格,), lets him nullify others' abilities on contact. His ability relies on skin contact, so he is unable to use it when he is restrained which is the only disadvantage to his ability.

Background
Dazai appears to be part of the Mafia prior to the story, and he was once one of the five great Mafia Executives. He was the youngest person to become an executive in history, and a living legend within the mafia as well. In the years he was an executive, roughly half of the mafia's overall profits could be solely attributed to him, to the extent that Ougai Mori mentioned that "Given another four or five years, I wouldn't be surprised if Dazai killed me and took over my position." He was also a specialist at torturing people for information claiming to Kouyou Ozaki that, "There hasn't been a single prisoner, who hasn't spilled everything under my interrogation." . He even gave Akutagawa spartan training in using his ability.

The trigger for Dazai leaving the mafia was his old friend Oda Sakunosuke, a low-ranked mafia member who was killed in the conflict between Port Mafia and Mimic orchestrated by Ougai Mori to obtain an official license from the government expressing silent consent of Port Mafia's existence and its activities as an organization. Already distraught from the knowledge that Ougai intentionally drove Oda Sakunosuke into a suicidal attack against the enemy commander, Dazai took Oda's last words to heart - "I know it makes no difference to you, but please become a good human being. Save the weak, protect the orphaned. I suppose you don't care for either justice or evil...but striving to be a better person is a wonderful thing" - and decided to leave the mafia.

It is stated by Akutagawa that, during a mission, he suddenly aborted it and supposedly, defected from The Mafia. Dazai later tracked down a man named Taneda, who was the acting commander for the Japanese ministry's supernatural division, and requested to work in a place where he can help people. Taneda recommended the Armed Detective Company to Dazai, on the condition that he'll need at least two years to cleanse his past. Later, it was his friend, Ango Sakaguchi who assisted him with that. Furthermore, it is unknown what he was doing during that time, but it is mentioned by Dazai himself that before meeting the Armed Detective Company, he was an unemployed and unmotivated drunk in a bar that he used to frequent.

Plot
Dazai first appeared floating down a river, apparently trying to commit suicide until he was accidentally found by a starved Atsushi. Afterwards, he and his colleague, Kunikida treated Atsushi to food while listening to his story about how he ended up at the river while hungry. He then introduced himself and Kunikida as part of the Armed Detective Company and they would like to hunt down the tiger that is apparently following Atsushi and terrorizing the areas wherever he went.

At night, while Dazai and Atsushi waited for the tiger to show up, he realized all of the clues that led Atsushi to be confused about the tiger was matching up to be the fact that Atsushi actually was the tiger. As Atsushi lost control of himself and transformed into a full-grown tiger, he was easily subdued by Dazai's ability, No Longer Human and lost consciousness. Dazai then brought Atsushi back to the dorm where the Agency members are staying. The next day, he called Atsushi for help because he was stuck in an oil barrel trying to commit suicide and gives him the address of the Agency at the same time.

Trivia

 * He, along with several other characters, made an appearance in the mobile game Love Heaven as a limited time character.
 * His constant attempts to commit suicide with a beautiful woman could be an allusion to his real life counterpart's attempted double suicide with Shimeko Tanabe and Hatsuyo Oyama. His attempt with his lover Tomie Yamazaki was ultimately successful.
 * It's also possible that his suicide attempts serve as a reference to No Longer Human 's protagonist Ōba Yōzō's multiple suicide attempts throughout the story, which is considered to be a reflection of Osamu Dazai's turbulent life.
 * He was the youngest boss in mafia history.
 * In real life, he is often grouped together along with Sakaguchi Ango and Oda Sakunosuke as the Buraiha or Decadent School. 
 * And on the series, this is often alluded, because the three used to meet in a certain bar, as seen in Dazai and the Dark Era, and illustrated on the calendar.
 * He is nicknamed as 'Bandage-wasting Device' by Kunikida at Chapter 2 / Episode 2.
 * Dazai usually refer himself by gender neutral phrase "watashi" rather than the more masculine phrases like "boku" or "ore".
 * Dazai's pretty bad at driving, as shown in the first light novel "Dazai's entrance exam".
 * He is based after Osamu Dazai, a man who wrote No Longer Human.