Bungo Stray Dogs: 15 Facts You Didn't Know About Osamu Dazai (2023)

Osamu Dazai from Bungou Stray Dogs may not be the series' protagonist, but he stole the show from the lead, Atsushi Nakajima. Dazai may seem cheerful and outgoing, but his past is quite dark, and his identity is still shrouded in mystery even though his backstory has been covered.

RELATED: Bungou Stray Dogs: 11 Facts You Didn't Know About Ranpo Edogawa

From the Port Mafia to the Armed Detective Agency, Dazai's too complex to label as either hero or villain. It's hard to understand what Dazai's thinking, so he may just be BSD's most complicated character. The second and third seasons delve into Dazai's past, but there are still many pieces of trivia that fans may not know about him.

Updated on January 20th, 2023: Osamu Dazai is one of the most important characters in Bungou Stray Dogs. Even though the series has gone over his backstory, there are still many unknowns about this enigmatic antihero that even the series' most avid fans may not be aware of. Since season four is currently airing, we've added a few more facts about Dazai to this list.

This article mentions self-harm and suicide. Read at your own discretion.


15 Dazai's Ability Is Always Active

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Dazai has one of the strongest abilities in the series. It is called No Longer Human and is named after the book by the character's namesake, Osamu Dazai. This extremely overpowered and useful ability allows him to nullify any ability by touching the person who is using it.

Although he can still be hurt utilizing poison or weapons, this makes Dazai impenetrable to foes. Also, since he only needs to touch an ability user to cancel out their use of it, it is always active

14 Dazai's Past With Fyodor Dostoyevsky Is A Reference To The Book "No Longer Human"

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Fyodor Dostoyevsky first made his debut in the theatrical release Bungo Stray Dogs: Dead Apple. The interactions between Dazai and Fyodor are linked to their past with one another. The author that Fyodor Dostoyevsky was named after wrote the book Crime and Punishment, and this is also Fydor's ability in Bungo Stray Dogs.

Within the book No Longer Human, the protagonist Oba recalled reading Crime and Punishment and was affected by the book. It was a pivotal point in his downward trajectory later on in his life.

(Video) 5 Facts About Osamu Dazai - Bungo Stray Dogs/Bungou Stray Dogs

13 Dazai Is Often Used For Comic Relief

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This is one of the reasons why some fans do not know how to feel about Dazai. At the beginning of Bungo Stray Dogs, Dazai is flowing down a river and tells Atsushi he interrupted him from dying, as he was trying to drown. However, he truly does have suicidal tendencies, as shown in the tensest times in Bungo Stray Dogs.

RELATED: 10 Books To Read If You Like Bungou Stray Dogs

He speaks about it with a smile, which is more problematic than humorous. However, as time progresses, this comic relief becomes more reasonable as we discover his past.

12 Dazai Was Designed To Contrast Atsushi

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Kafka Asagiri, the author of Bungo Stray Dogs, went through many trials to model his characters on various real-life Japanese and foreign authors. The authors the characters in the series are based on are not only Japanese writers but Americans such as Margaret Mitchell, who wrote Gone With The Wind, or Russians such as Fyodor Dostoevsky, who wrote Crime and Punishment.

Unlike Atsushi, who wished to live no matter what it took but was too kind, Dazai was meant to be disliked for his attempts at suicide and humorous personality.

11 Dazai Made A Cameo In Eureka Seven: Hi-Evolution

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Osamu Dazai is not only a real-life world-famous author, but he is also popular in animation because of Bungo Stray Dogs. He became so popular that BONES, the studio that animated the original Eureka Seven: Psalms of Planets and Bungo Stray Dogs, decided to have some fun and add him to a scene.

There was a scene where a character was reading a book named "No Longer Human" with Dazai on the cover of the book. Two of the Eureka Seven: Hi-Evolution films were released on September 16, 2017 and November 10, 2018.

(Video) The Life Of Osamu Dazai (Bungo Stray Dogs)

10 Dazai's Type Is Any Woman Who Will Die Together With Him

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Dazai has a complicated life, but an even more of complicated love life. While he speaks of self-harm as if it is the best thing in the world, he seems to have a knack for trying to find the right woman. One problem: He will take any woman who commits double suicide with him.

This is not only a trait for the fictional character, as the real Osamu Dazai attempted to commit double-suicide with his first wife, Hatsuyo, after discovering she committed adultery with his best friend, Zenshiro Kodate. Ultimately, he died drowning in the Tamagawa Canal with a different woman, Tomie Yamazaki.

9 Dazai Joined The Armed Detective Agency To Do Something Good

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Before Oda died, he acknowledged that Dazai's loneliness would never cease. However, he encouraged Dazai to do something meaningful and help other people out. This is what prompted Dazai to defect from the Port Mafia and join the Armed Detective Agency.

RELATED: 10 Anime Series To Watch While Waiting For Bungou Stray Dogs Season 4

Previously, Dazai admitted that he joined the Port Mafia in search of a reason to live. He reasoned that being around raw emotions like fear and anger while surrounded by violence would get him closer to the human condition, giving him a reason to live in the process.

8 Dazai Is Horrible At Driving

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Most of the cases for the Armed Detective Agency are dangerous affairs, as they work with the police to stop various crimes. Sometimes, they get in trouble and have to run away from ability users or danger, but Dazai should in no way be the one driving.

As seen in an episode of Bungo Stray Dogs, Dazai usually leaves the driving to his partner, Doppo Kunikida. Even he mentioned that Dazai is too reckless when he drives.

(Video) Everyone underestimates me... • Captured/experimented!Dazai!AU! • Bungou stray dogs •

7 Dazai Didn't Have A Will To Live As A Teenager, Either

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There was an arc of Bungo Stray Dogs that was called The Dark Era. During this time, Dazai was a part of the Port Mafia and was 15 years old. Unlike the current time, Dazai used to be more cruel, cold, and truly wished to die.

He even willingly took shots without flinching. The only reason he did not fully take his life is that Ogai Mori, his doctor and the leader of the Port Mafia, invited him. Part of what contributed to his nihilism and disdain for humanity was when he witnessed Mori kill the previous boss and then fabricate his will so he'd take his place.

6 Dazai Was The Youngest Executive In The Port Mafia's History

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During the Dark Era of Bungo Stray Dogs, fans discover Dazai's past in-depth. It turns out Dazai was the youngest executive in Port Mafia history at 15 years old. Dazai became pretty desensitized to violence during this time, and his behavior proved it.

He was shown to be cold and ruthless, as he killed a person and continued shooting him after he died. Although Dazai is now cheerful and speaks of dark things with a smile, he can sometimes show old tendencies to enemies he hates, old acquaintances, or Port Mafia members.

5 Dazai Was The Reason Chuuya Joined The Port Mafia

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Before learning much about Dazai's past, fans knew that he and Chuuya, one of the most beloved characters from the Port Mafia, had history. In the third season, they learned that Dazai played a role in making Chuuya a member of the Port Mafia.

RELATED: Which Bungou Stray Dogs Character Are You, Based On Your MBTI®?

If he and Chuuya never interacted, then one of Dazai's greatest rivals would never have been in his life. It proved that it may have been best if he decided to leave the Port Mafia even sooner than he already did.

4 Aside From Chuuya, Dazai Also Dislikes Dogs

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(Video) 5(ish) minutes of dazai slander in the bsd dub

Dazai's likes and dislikes are pretty straightforward. He likes suicide, but not pain and suffering. He loves annoying Kunikida, but dislikes Chuuya. Interestingly, Dazai also dislikes dogs. This is another reference to the real-life author of the same name, who wrote a 17-page rant about how much he hates dogs.

There was also an instance in the manga where Dazai ate dog treats to induce a stomachache, forcing him to leave Atsushi alone on the train. Though it's unclear why Dazai hates dogs in the series, it led to hilarious moments.

3 Dazai Is A Playable Character In A Video Game

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Fans of Bungo Stray Dogs are very familiar with the anime, manga, and light novels, seeing as how they are the three most popular adaptations of the series. However, many don't know about the mobile game, Bungo Stray Dogs: Tales of the Lost.

In it, players can control many characters in the series, with Dazai and Atsushi being the first two that are playable in the mobile gacha game. Tales of the Lost, developed by ambition, is an entertaining puzzle game. It's available on the Google Play Store and App Store.

2 Dazai's Enemies Knew Him More Than His Friends Did

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The reason why Dazai was such a mysterious character in the beginning of the series is that he kept his past as an executive of the Port Mafia a secret from the Agency. They were shocked to learn the truth when they finally found out.

Even though Dazai cared more about his friends in the Agency than his former comrades from the Port Mafia, they didn't know him nearly as much as characters like Chuya and Oda did.

1 Dazai Is A Great Teacher

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Though he can be quite humorous and has a dark past, Dazai is also a great teacher. He's helped Atsushi become the hero he is by being a mentor for him.

Dazai has also helped other characters, including people from the Port Mafia, become stronger, and if it weren't for his teaching skills, neither the Agency nor the Port Mafia would have become as powerful as they are.

(Video) I STUDIED For Bungo Stray Dogs: Dead Apple

NEXT: 8 Times Ranpo Edogawa Proved He's The Greatest Detective In Bungou Stray Dogs


1. dancin | Bungou Stray Dogs
2. || I have tried || Dazai angst ||
3. ⸙. | *᭝ꔛ⃟🩹ྀ⃕🕊 | "So... Confused." | _ཻ❑̣̣̣ (Ft. Oda, [15 y.o] Chuuya, [15 y.o] Dazai) Angst 😋😋⛓/AU
(zwxiikikiku | ♡)
4. "You think badly of me too?.."//Bungou Stray Dogs//Dazai Osamu Angst😘✌//Ft. Young Dazai & P.M. Dazai
(ᦔ꠸ꪶꪊꪻꫀᦔ ꪑꫀꪑꪮ᥅꠸ꫀᦓ)
5. Who is he? (She) || Dazai angst || Child au || Bsd ||
(Spector Grim)
6. Ocean Blue Eyes//Bungou Stray Dogs//Armed Detective Agency//Ft. Happy Dazai Fluff ♡
(ᦔ꠸ꪶꪊꪻꫀᦔ ꪑꫀꪑꪮ᥅꠸ꫀᦓ)
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