Osamu Dazai
The 'Black Wraith' who nullifies abilities while seeking a comfortable death with a beautiful woman.
Osamu Dazai is one of the two main protagonists of the manga series Bungo Stray Dogs, written by Kafka Asagiri and drawn by Sango Harukawa. A member of the Armed Detective Agency, he mentors Atsushi Nakajima while managing threats to Yokohama. Formerly a feared executive of the Port Mafia known as 'The Black Wraith', Dazai's design contrasts sharply with Atsushi: black hair against white, and a 5'11 height versus 5'7.
- Affiliation
- Armed Detective Agency
- Former Group
- Port Mafia
- Ability Name
- No Longer Human
- Role
- Key Member
- Status
- Alive
- Appearance Trait
- Full-body Bandages
Lore & Background
Dazai served as the youngest ever executive in the Port Mafia, specializing in torture and creating surveillance tactics. During this era, he mentored Ryūnosuke Akutagawa under Ōgai Mori's watchful eye. His backstory was influenced by a real-life photo of author Osamu Dazai with Ango Sakaguchi and Sakunosuke Oda, inspiring the light novel 'Osamu Dazai and the Dark Era'. In that story, Oda encouraged Dazai to leave the mafia and find a life without murder. The fictional dynamic reversed reality: while real Dazai admired Akutagawa, fiction sees Dazai mentoring the younger writer. His departure from the mafia remains tied to these relationships, leading him to join the Agency at age 20 via direct recruitment by Fukuzawa Yukichi following Oda's death.
In Their Own Story
In the main series, Dazai allows himself to be kidnapped by the Port Mafia to test Akutagawa, telling him Atsushi is superior. This sparks an alliance between the Agency and Mafia against the Guild, where Dazai partners with Chuuya Nakahara. Later, he confronts Fyodor Dostoyevsky of the Rats in the House of the Dead. Shot by Dostoyevsky's underling, Dazai recovers to track the cure while coordinating with Ango. Imprisoned by Saigiku Jōno, he escapes with Sigma after Nikolai Gogol injects them with poison; Dazai sacrifices his leg to save Sigma. The anime reveals Chuuya pretended to be a vampire to fake Dazai's death via repeated face shots, allowing him to wait for allies to defeat Fukuchi's army and kill Fyodor.
Reader's Guide
Dazai wields the ability 'No Longer Human', which completely nullifies any supernatural ability by touch. His appearance features short, messy brown hair with bangs covering his nose and eyes, light brown eyes, and a beige trenchcoat over a bolo tie with a blue gem. Bandages cover his body, representing his obsession with suicide—a trait where he constantly seeks death with a beautiful woman. Despite this 'suicidal maniac' persona, he is cunning and intelligent, acting as the sage to Atsushi's hero. He balances Kunikida's seriousness with humor. In the film 'Dead Apple', director Yasuomi Umetsu and Asagiri adjusted his hairstyle, though Dazai remained a secondary focus behind Atsushi, Kyoka Izumi, and Akutagawa.
Did You Know?
- Dazai's nickname 'The Black Wraith' is canon from the light novel 'Osamu Dazai and the Dark Era', while 'The Demon Prodigy' was a fan translation error.
- His character design balances colors with Atsushi (black hair vs. white) and height (5'11 vs. 5'7).
- In fiction, the relationship between Dazai and Akutagawa is reversed compared to real life, where the author admired the writer's work.
- Voice actor Kaiji Tang was attracted to the role specifically by Dazai's comical attitude.
- Dazai's ability allows him to nullify supernatural powers simply by touching them.
Frequently Asked Questions
Who is Osamu Dazai?
Osamu Dazai serves as one of the two main protagonists in Bungo Stray Dogs, currently working for the Armed Detective Agency after leaving his past life. He is instantly recognizable by his full-body bandages and acts as a mentor to Atsushi Nakajima while protecting Yokohama from various threats.
What are Osamu Dazai's abilities?
His power, named 'No Longer Human,' allows him to nullify the supernatural abilities of anyone he touches. This skill made him a legendary figure in his former organization and remains essential for neutralizing dangerous enemies today.
Why is he called 'The Black Wraith'?
This title stems from his time as a feared executive of the Port Mafia, where his unmatched deduction skills and ability to render opponents powerless earned him a terrifying reputation. The moniker reflects his dark past before joining the Agency.
How does Osamu Dazai's story end?
As of the current canon, Dazai is still alive and remains a key member of the Armed Detective Agency. His narrative continues to evolve as he balances his duties with his personal desire for a peaceful death alongside a beautiful woman.
Why is Osamu Dazai important to the series?
Dazai drives much of the plot through his complex history, serving as the bridge between the Port Mafia and the Agency. His unique ability and deductive genius are often the only things standing between Yokohama and total destruction.
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