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文豪ストレイドッグス [Bungō Stray Dogs] (Novel) #6

文豪ストレイドッグス BEAST

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もし“ポートマフィアの禍狗”芥川龍之介が武装探偵社に入社していたら? 
もし“月下獣”を宿す中島敦がポートマフィアに所属していたら? 
妹を奪われ、怒りと破壊の衝動に身を任せる芥川と、『ポートマフィアの白い死神』として、敵対する者を屠り続ける敦。
ふたりの出会いが導く運命とは……!? それは“白”と“黒”が辿ったもうひとつの物語。
2018年公開の劇場版入場特典の小冊子に加筆修正した完全版が登場!

244 pages, Paperback

First published April 1, 2019

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About the author

Kafka Asagiri

232 books1,459 followers
See 朝霧カフカ (Asagiri Kafka).
Japanese scenario writer and novelist.

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5 stars
1,086 (68%)
4 stars
383 (24%)
3 stars
101 (6%)
2 stars
8 (<1%)
1 star
5 (<1%)
Displaying 1 - 30 of 248 reviews
Profile Image for ✨Rashi✨.
89 reviews16 followers
June 19, 2021
Guess who just decided to binge read the entire light novel?
My only reaction on finishing this book is AAAAAAAAAAAAAAAA
The author won't let Dazai be happy even in an alternate reality....

__________
Me: Every bsd light novel makes my heart ache, especially 'Dazai's Dark Era' and '55 Minutes'. I won't read the next one this month.
Also me: *reads the entire Beast in one day*


Apparently, the author won't let the characters be happy even in this alternate reality.

Plot

The light novel is set in an alternate reality where the author tries to answer the question that what if Odasaku was in the detective agency? What if Dazai never left the Port Mafia? What if instead of Akutagawa, Dazai had picked Atsushi as his subordinate? What if Akutagawa joined the Detective Agency?

So, this is what the plot was.

Characters
What do I even say? All the characters are amazing of course

Spolier Talk

1. Akutagawa in the ADA was just *chef's kiss* and that PTM moment? Aaaaaah
2. Atsushi- the cinammon roll
3. That moment when Akutagawa and Atsushi were talking in the cafe!
4. That Dazai and Chuuya scene 👀
5. WHY DOES CHUUYA APPEARS FOR JUST 1 PAGE!!??
6. Odasaku!!!!!!!!!AAAAAAAAH! He's finally writing his novel!!!! 😭
7. That moment when Akutagawa thinks to himself that perhaps Odasaku is making an army or smthing XD
8. The reason Dazai wanted to save this alternate reality 😔😔😞😭😭😭😭
9. That scene when Odasaku doesn't remember Dazai and aaah😭😭😭😭😭😭😭😭😭😭😭😭
10. That final scene when Dazai says ' because this is the only world he can write his novel in " and" I wish I could have read it"
11. Oh and also Akutagawa and Kenji bonding
12. Akutagawa's outfit Gucci vibes



Art to make us happy


This one is sad though
This scene ripped my heart into atoms- yes not even shreds. atoms. The longer I look at this the sadder I get 😔
Profile Image for Savannah.
56 reviews2 followers
June 17, 2021
I loved this story a little to much so now I want to see an animated ova or movie following it. The concept holds so much potential.

Also Asagiri putting “What if Chuuya had joined the armed detective agency with Dazai?” In the Afterword like??? He’s a great writer and I’d love to see more novels along side the manga.
Profile Image for Insha.
218 reviews
July 20, 2021
✨I regret reading this✨
Profile Image for Rebecca.
4,782 reviews69 followers
February 26, 2022
"What If" and "If Only" are two sides of the same coin - one speaks of possibility and potential while the other of loss and that which will never come to be. This entry into the Bungo Stray Dogs universe captures both of them as it presents a version of the world where Atsushi joins a Port Mafia that Dazai never left while Akutagawa joins an Armed Detective Agency where Odasaku fills Dazai's place.

While I was reading it, I said that Odasaku being alive was the best part, and as it turns out, I wasn't wrong - it's just that I didn't fully understand why it was so. The reason is tied up in this being the one world where Dazai, who has never stopped mourning Odasaku's death in the main story, desperately wants to live, but it's also the one where he cannot. Odasaku and Dazai can't exist forever together, and that gives rise to the contradiction of both "what if" and "if only" being present in the same story. You can change one thing, but that doesn't necessarily mean that you can change everything.

Needless to say, this is one of the strongest books in the franchise, manga or light novel. It helps to flesh out Dazai, Akutagawa, Kenji, and Tanizaki and brings home the elements of the their characters that we don't always get to see but that are important to the story. It's bittersweet in the right way, a way that makes us contrast those two central phrases.

What if. If only.
Profile Image for sally ✿.
471 reviews117 followers
October 21, 2021
“This is the only world in which he lives and writes novels. I can't let that world disappear.”


This book is actually pain through and through, and that’s why I had avoided reading it for so long.

But it had Atsushi, and wherever Atsushi is, I follow. Oh, sweet Atsushi. He is not cut out for the mafia life. He deserves love and affection and his found family, and a part of me will never forgive Beast Dazai for taking that away from him where ADA Dazai had given it to him. I truly think he gets the saddest ending.

Seeing Akutagawa thrive and interact with the rest of the Armed Detective Agency was like a balm to an otherwise gruesome and depressing novel. Kenji is a light that can make even prickly Akutagawa shine; I loved their scenes together.

And Odasaku, kind, protective, and wonderful Odasaku. How I longed to see you again even if your scene with Dazai broke me into a million irreparable pieces.

Profile Image for z.
52 reviews8 followers
March 28, 2023
Just threw up 🔥🔥🔥🔥
Profile Image for Andrea.
737 reviews44 followers
July 31, 2021
"A life with someone you can say good-bye to is a good life, especially when it hurts so much to say it"

Esta novela es un regalo para cualquier fan de Bungô que ha conseguido que Akutagawa y Atsushi me encanten como personajes. Pero el que me ha enamorado, más de lo que ya me tenía, ha sido Dazai (y eso que aparece poco). ¡Si hasta me ha emocionado y me ha hecho sufrir con sus últimas palabras! Gracias a esto le he dado 5⭐, por tocarme la fibra sensible, si no, lo puntuaría con cuatro, pues las descripciones de las peleas a veces se alargaban más de la cuenta para mi gusto y quitaban hueco a otro tipo de escenas más dramáticas o divertidas, por ejemplo. Además, he echado en falta más momentos de Dazai con Chûya y Oda. Habría llorado como una magdalena si este último hubiera escuchado lo que debía escuchar (quiénes lo hayáis leído me entenderéis 😭).

Esas son las únicas pegas que le encuentro a la historia, que me ha regalado frases muy épicas y preciosas y que en ciertas partes consideraba mejor que la original.

Pd: Kenji y Akutagawa trabajando en el campo me han dado la vida.

"This is the only world where he's alive and writing novels. I can't let this world disappear"
Profile Image for Mizuki.
3,520 reviews1,454 followers
Currently Reading
April 4, 2023
What if the Port Mafia’s Hellhound, Ryuunosuke Akutagawa, had joined the Armed Detective Agency? Likewise, what if Atsushi Nakajima belonged to the Port Mafia?


Premise: Oh my fucking goodness, that's going to be so fucking interesting! *fangirl's insane laughters*

(1) It's a lovely installment to the Bungo Stray Dog series. We are treated with a ‘what if’ situation of members of the PM and ADA switching places.

(2) The writing is neat and the plot is effective, yeah!

More to come.

Review for vol. 1: https://www.goodreads.com/review/show...
Review for Vol. 2: https://www.goodreads.com/review/show...
Review for vol. 3: https://www.goodreads.com/review/show...
Review for vol. 4: https://www.goodreads.com/review/show...

Review for Bungo Stray Dogs WAN! vol. 6 https://www.goodreads.com/review/show...
My review for Bungo Stray Dogs Wan vol. 11: https://www.goodreads.com/review/show...#
Profile Image for Rachel Woods.
24 reviews
June 3, 2021
Light spoilers.....





This is definitely a book for people that know the series. Whether that’s a pro or a con is up to you. However, for those of us who are well acquainted with these dynamic characters and heartbreaking story this is a winner.

There were so many moments that genuinely made me burst into tears because of what they meant to the characters. For example, there is a moment where Dazai and Oda speak. Asagiri either deserves an award or to be pelted by stones because the absolute heartbreak of that moment was too much for me.

Currentlyi don’t have any favorite lines however Asagiri never fails to eloquently blend action and poetic lines.

I look forward to re-reading this and catching the beauty in his writing. For now I have to fix my makeup from the sobbing this book caused.


Profile Image for Zita  Azlina.
238 reviews22 followers
January 23, 2022
"We both harbor a beast. We have regrets. We try desperately to run from the inescapable. But nonetheless, we will fight and resist our inevitable extinction in order to understand who we really are."


* * *

I think I might have gone insane.

No, It's true. I'm not even joking. I think I really had gone insane. Literally, too. Like.. in that exact sense.

First of all, WHAT THE FUCK.

I've read the first volume of the BEAST manga before I read this, I, too, had read a part of the second volume. So I had kinda already knew the spoiler of the story, and nevermind, I kinda is not really a fan of the plot line.

I thought it would be no use for me to read the light novel too, thinking I'd rather read the manga anyway. I mean.. I've already emotionally destroyed by the manga, right? I won't again been destroyed by the light novel too....... right ?

....

DING DONG! I'M WRONG! I'M TOTALLY WRONG. EVEN IF I have already finished the manga, it doesn't matter. Even if I haven't read the manga beforehand, it doesn't matter. Even if I jump straight into this book without knowing the plot, it doesn't matter.

Because no matter what I did before, whatever the fuck did I read, whatever theories did I comply about BEAST universe, I still, stay, keep, remain, been emotionally drained, destroyed, wrecked, crumble, punched by this fucking novel.

First, Akutagawa's cruel past and cruel emotion. All his fight with himself, his realization that he was his own enemy all this time, and THE WAY GIN REFUSED TO COME BACK WITH HIM. THE WAY GIN CALLED HIM EVIL. THE WAY GIN SAID "YOU'RE NOT WORTHY OF HAVING SOMEONE TO LOVE". I THINK I DIED A LITTLE INSIDE. Second, Atsushi past. Atsushi's emotional wreck over his guilt for killing the director is so fucking painful to read. "Those who can't save people aren't allowed to live" IS SO FUCKING PAINFUL TO READ. I don't care about the director good intention on saving him. I don't care about all the reasons behind his abuse for Atsushi. The way he still impacted Atsushi's life even after death, the way he still impacted his way of thinking about his ownself even after death, JUST FUCK YOU. I HOPE YOU HAVE FUN IN HELL.

SECOND OF ALL, WHAT THE FUCK.

THIS Third reason was what especially destroyed me. This third reason was where I actually shed my tears. THIRD, THE FUCKING THIRD, WAS THE ENTIRE MEETING OF ODASAKU AND DAZAI.

Here is the thing: BEAST AU was created solely by Dazai to save Odasaku. "This is the only world where he could write his book", and it's true. Canon!Dazai was implied to command Beast!Dazai to save Odasaku, and it's true. Which means, that this whole thing happened solely because Dazai wanted to create a world stabile enough for Oda to live.

Fine? Still fine.

At this point, i still hate Dazai.

Two: Reading Dark Era did making me feel sad over this. Odasaku and Dazai are truly in love which other (who cares romantically or platonically?) Canonically, they wanted to protect each other even after death .

Three: I have one thing I regret the most. And it is. READING THE DAY I PICKED DAZAI BEFORE I READ THIS.

BECAUSE. FUCK FUCK FUCK.

FOR THIS THREE REASONS THAT MY ENTIRE JOURNEY OF READING ODA'S REUNION AND DAZAI WRECK ME INSIDE AND OUT.

OH MY GOD.

JUST.

OH MY GOD.

IM CRYING A POOL OF TEARS. I CANT EVEN FUCKING BREATHE. I CANT IMAGINE HOW DAZAI FEELS WHEN ODA AIMED THE GUN AT HIM, LABELLING HIM AS "ENEMY". AND AFTER ALL THIS, IT STILL ENDED WITH DAZAI SUICIDE TOO. I THINK I MIGHT HAVE DIED A LITTLE. I THINK IM GETTING A LITTLE INSANE.

SERIOUSLY, Beast AU is basically just Asagiri's biggest crime. A big ass emotional damager. I thought I have wanted to punch him enough for killing Akutagawa. But

Wow. Just wow. This fucking book ruined me.

The only comfort i found is the fact that both Atsushi, Akutagawa, even Kyouka and Gin, was finally able to be free and are finally on a right journey to find themself, their own happiness, without their past hanging around them.

Only, they decided to ruin it too by changing the ending in the Live-Action :)

But that was another talk.

Lets get enough with how the book ruined me.

Let's do a review for real.

Of course, as a fan of Asagiri, I would say that this book is AMAZING. The characters are on point, the plot are on point, the physics theory are on point, and the connection with the canon world is on point. I especially love shin soukoku's fighting scene, I love how deeply Asagiri explore emotion of both Akutagawa and Atsushi, I love how the both of them had justice as equal compared to their canon self.

I love the way he build relationships between Akutagawa and Atsushi with the other characters. I even love it the way he gave us brief view of how it would be for shin soukoku if they meet in a normal world.

Clearly, this book is insanely amazing.

Without doubt, I'd give this book 5/5. You don't have to worry, this book is maybe will damage you, but it's worth it.

Don't hesitate to read this, just pick it up! (Bonus point: you will see Akutagawa being cute so much)

And... I guess that's all for my review. I think I might have gone crazy a little, but that doesn't matter. GO, read the book! Let's together hurt ourself.

Sorry for sounding very overjoyed. But I'm honestly thought this book is amazing.

Thanks for reading!

p.s. still have so many questions regarding how is the universe now that decays of angels had taking over the book. is it crumbling?
p.s.s. asagiri should have wrote a book where akutagawa atsushi dazai oda and chuuya all in the agency instead of mafia to compensate this crime. please make them happy for real.. ㅠㅡㅠ
p.s.s.s. DON'T ever read The Day I Picked Up Dazai before you read this. No. JUST NO. TRUST ME.
Profile Image for Sara.
1,873 reviews582 followers
February 18, 2021
This version of story is also amusing!
Profile Image for Ander.
149 reviews1 follower
August 27, 2023
Fellas is it human to save an entire timeline because in that timeline your only friend gets to live
Profile Image for Lillian.
30 reviews1 follower
May 22, 2025
This was...something.

I don't know what it is, but the more and more I read Dazai's presence and lines in the Light Novels the more the man PMO. Like, I'm genuinely infuriated by his smugness and "everything is going to plan" attitude. Can he fail more than once, please??? Show me his humanity. I know that's the entire point of his character, but I beg of you, Asagiri.

Reading Kyouka "snuggling up" to Atsushi when they're first introduced, directly after getting a scene with the Tanizaki siblings, wigged me out, honestly. I was shocked by their closeness, because they're not that physical in the main series, though that might just be because Kyouka hasn't gotten a lot of screen time in the recent seasons. Also, side note, where did Kyouka go at the end of Beast? Where is she? Is she with Atsushi in the orphanage?

I would have loved to see a bit more of Chuuya in this story, but I guess his presence wasn't all that needed, since his role didn't change too much from the original universe. But I'd have liked to see him getting the news that Dazai was dead and/or him as the Port Mafia's next boss. It could have been grief over losing someone he's known for years, maybe even anger that he wasn't the one who killed Dazai, but I really would've liked to see more of Chuuya's presence in the novel.

I literally threw the book when Gin stabbed Akutagawa. I know the purpose but I was so happy that they were hugging, then I read "The next moment, Akutagawa's face twisted in agony" and chucked the book to the side like I was playing Hot Potato. PMO.

Overall, 4/5. The parallels like Atsushi wondering aloud how different things would be if Dazai had chosen Akutagawa instead of him to be in the Port Mafia and Atsushi's relationship with the Headmaster were so good. Worth the read.
This entire review has been hidden because of spoilers.
Profile Image for Mel.
27 reviews
June 15, 2024
maybe 2.5 if i'm being generous //3

the thing with asagiri is that i really enjoy the characters but i really don't enjoy his way of writing. especially in beast, much to my sadness, the characters and their beautiful complicated underlying feelings aren't allowed ANY subtelty.
HOW many times have i read the word 'beast' in this book? it becomes tiring!

Most of the lines that then resonate with me are washed away by the rest of the book. i'm not qualified to say if asagiri is a good writer because i haven't read the original, the japanese version, so i haven't understood the book in its full context, but still - with both the light novels i've read i can say that i would recommend people to just read the manga, unfortunately.

i really really love beast and all of its themes and how it compliments the OG characters, so even MORE then i would recommend reading the beast manga. hoshikawa did a really really good job with the art, which has a very grimy feel to them - very fitting for the universe.

Profile Image for Pau Rodríguez.
32 reviews1 follower
September 2, 2021
This light novel is just wow, I have no words to describe how much I loved it. Kafka Asagiri is an amazing writer, and his BSD novels are always so good and surprising. But he won’t let Dazai be happy even in an alternate universe, that’s so heartbreaking.

The characters were as amazing as always. I really enjoyed having Akutagawa as the main character, and seeing how his life would have been if he never joined the Port Mafia in the first place. My babe deserves all the happiness in the world. On the other hand, Dazai’s scenes always broke my heart, like I cried so much at some parts; he’s by far the best character in the BSD series.

I can say with certainty that this one, along with “Osamu Dazai and The Dark Era” and “Dazai, Chuuya: Fifteen Years Old”, stands in my top 3.

I’m looking forward to seeing what Kafka Asagiri’s next novel will be about. I just know for sure that it will be awesome, just like the previous ones.
42 reviews
August 27, 2021
Aaaaaaaand the last book binge for the series ends here (for now). I can't believe how on point this was even though it's an alternate universe.

I love:
-how it adds up to the lore as well, about Akutagawa's backstory this time.
-akutagawa's struggle and weakness (as to why Dazai chose Astushi in the orignial world)
-akutagawa's relationship with Kenji is surprisingly interesting
-akutagawa being in the ADA and how cautious everyone is around him made me laugh
-just realize that "the book" that dazai was talking about is the same book that fyidor and francis was aiming for..... interesting, really interesting...
-dazai one ups everyone again.... and the end ;____;
-odasaku and dazai meet up again.
-dazai's sacrifices ;____;
-knowing that the alternate universe is part of the lore.... will there be a multiverse soon too?

Can't wait for the 7th book age fifteen come out!
Profile Image for Nova Syzygy.
645 reviews39 followers
Read
May 28, 2021
[incoherent screaming] fARMING???? WITH KENJI?????? AND THEY’RE???????? GETTING ALONG??????? AKUTAGAWA???????? HELPS CHILDREN??????????? AND RANPO???????????????

AND ATSUSHI???????????? PAIN?????????????? :(((((

AND DAZAI????????????????? KSHSJJSJDJSJKSJSHSJSJSJ????????????????????? :((((((



Akutagawa....................... :((((((((((((

In short: pain.









...is there a sequel? I’d like to suffer more.
Profile Image for dikshya.
237 reviews
June 9, 2024
"This is the only world where he's alive and writing novels. I can't let that world disappear." I hate gay little Dazai so much because that actually made me shed a tear.

Asagiri really thinks everything is a joke, why can Dazai never be happy in any universe? This actually pissed me off. That moment with Dazai and Oda at the bar.....ohhh do not play with my feelings like that.

Again, not sure why but the POV switched from the 3rd person (which the entire novel was written in) to 1st person following Oda and Akutagawa randomly.

I still did really like this light novel, but I definitely prefer the manga version.

Anyway we got Chuuya and Dazai bickering so I am happy regardless.
Profile Image for Angélica.
112 reviews2 followers
September 10, 2022
"This is the only world where he's alive and writing novels. I can't let that world disappear"

I don't even watch the anime and I am in shambles.
This entire review has been hidden because of spoilers.
Profile Image for rom.
52 reviews
May 2, 2023
i miss my life three hours ago when i haven't picked up this book and my mental health wasn't in the gutter
Profile Image for gratría.
46 reviews1 follower
August 31, 2024
читая новеллы по бсд появляется ощущение дома 😔 как я их всех люблю это жесть
Profile Image for K.
229 reviews1 follower
January 25, 2025
«Someone once said, "It's human nature to lash out with violence. But if hurting others is your natural instinct..then you are nothing more than a mindless beast."»
Profile Image for Amy.
1,152 reviews
December 29, 2025
Yup, this novel hurt me just as much as the manga did...

I really adore this alternate universe story, especially as it shows different sides to the beloved characters as well as portraying what they would be like if circumstances were different. The Beast manga really made me love Akutagawa, and I'm glad this light novel definitely set it in stone (Chuuya is still my favourite). The writing did throw me off when random chapters changed from third to first person, but it wasn't a massive issue. Overall, such another great addition to the Bungo Stray Dogs universe, and does justice to the Beast manga (not sure which came first, but I'm happy to say that they're both pretty much the same).
Profile Image for Sirius :p.
8 reviews
May 24, 2026
It's always so cool to see different universes or different outcomes of each character's fate, especially one created by the author of the original series. I really liked this because of that, as well as seeing how different each character is(physically and mentally) if the story were to change.
Displaying 1 - 30 of 248 reviews