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After Sigma joins the ADA, he and Lucy quickly become friends. One day, Lucy goes to visit Sigma, and finds that he’s not doing so well.
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Not a ship!! I just think they would be besties:3
- Language:
- English
- Words:
- 681
- Chapters:
- 1/1
- Hits:
- 1
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The Mysterious Case of the Petrification by Insertaname
Fandoms: 文豪ストレイドッグス | Bungou Stray Dogs, Harry Potter - J. K. Rowling
24 Aug 2025
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The wizards are too dumb to solve the mystery behind the chamber of secrets themselves, so they reluctantly go to the muggles for help. Well not the muggles, a certain group of muggles, with a certain world's best detective.
Sent as a transfer student after being aged down by magic, and dragging his totally just a rival along with him, and his emotional support raccoon (of course), they go to investigate this mystery. Or just to cause shenanigans and get magical candy.
Safe to say Honeydukes has a new favorite customer.
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Great, Sigma thought. Dazai could set them right himself. “Dazai, tell them you aren’t interested in me.”
Dazai rubbed the back of his neck awkwardly. “I thought we were dating?”
For BSD Rarepair Fest 2025 day 1 - confession
Series
- Part 1 of bsd rarepair fest 2025
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天人五衰所带来的灾难结束就像一页小说迎来终局，而下一部新作则如同魔盒般缓缓开启，无法预测。
芥川的身体状况在复活后每况愈下，而此时太宰治为他准备了一个邀约。
或者是
敦需要学会处理他新搭档、新同事的事情。
Warning：这个世界不缺一篇芥川变成武侦社员的敦芥文，但是它在我的文档里出现了。
这是在119话出现前开始写作的，也许可以当作if。
Series
- Part 1 of daydream of tail wing or sphenoid bone
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Blood on our hands, we stand alone (ON HIATUS) by Smeepoo
Fandoms: 文豪ストレイドッグス | Bungou Stray Dogs, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
24 Aug 2025
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He remembers it, a fight against a certain man, a man who knew far too much about the book, who foolishly shared that information with others then…
or Akutagawa and Atsushi wake up in the world of MHA after what Dazai warned them about happened, or did it?
Now stuck together in a world that goes again everything they’ve ever been taught, the two must learn what they’re willing to do in order to get home, if there even is one to go back to.or or I haven’t seen a lot of BSD BEAST x MHA crossovers where Akutagawa is in the ADA and I want to change that
Previously “SSKK’S MULTIVERSAL ADVENTURES!!”
Title from “Mother Mary” by Mr.Kitty24/08/2025: READ THE END NOTE OF CHAPTER 13 FOR THE FIC'S STATUS
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In which Mori chooses to transfer Atsushi to the mafia. Atsushi spirals, hard. He gets existential.
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Chuuya has a rough and tiring day at work and when he gets home all he wants to do is sleep. When he sees a certain bandaged Mackerel he expects a chaotic night but instead they indulge in some sleepy shenanigans.
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“I’m so happy you’re okay now.”
No, he was not okay.
“Akutagawa, ”
He felt weak and light-headed, and he could do nothing as he was gathered in Nakajima’s arms, unable to move a muscle and with too many unanswered questions whirling madly in his mind as he once again slipped back to unconsciousness.
“I’m not letting you go.”
In the darkness that surrounded the two youths, courtless crimson roses continued to blossom silently under the night sky, filling the cold air with their sickeningly sweet scent, everywhere and inescapable.
Or: a twisted reimagining of the vampire outbreak's aftermath.
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Pm dazai x Ada chuuya by Magicalgirl12234
Fandoms: 文豪ストレイドッグス | Bungou Stray Dogs, Soukoku - Fandom
23 Aug 2025
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fic where chuya left the mafia and joined the agency instead, leave dazai alone in the mafia after odas death. Now chuuya must try to find dazai and convince him to join him in the light. But dazai has grown bitter and numb after his years alone. Will chuuya be able to save his partner and make him see light he lost again?
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Two months earlier:
“Do you really want to raise our baby here, Chuuya? In this horrible, disgusting place?” Dazai’s voice was uncharacteristically raw as he sat beside his pregnant husband on the couch. For once, there was no sarcasm, no inconsistency—just helplessness. “Don’t you think Oda was right?”
And now…
The moment Chuuya pieced it all together in his mind, his body lurched with the reflex to retch. A deep discomfort burned in his throat as his nails dug into the skin of his own neck. He shut his eyes, struggling not to lose his sanity.
Dazai did it. The moment Chuuya gave birth, Dazai had taken their baby from him and fled the Port Mafia. He ran. He ran. He ran. He ran. He deceived Chuuya.
“Dazai…” Chuuya’s pupils dilated with sudden, shattering realization, and he screamed.
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The Liberties I’m willing to Take by VelocitySpell
Fandoms: 文豪ストレイドッグス | Bungou Stray Dogs
23 Aug 2025
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‘’Huh?’’ Atsushi looked up, puzzled at Kyouka’s words.
‘’That Akutagawa.. You and him aren’t so different.’’ The girl repeated. Her eyes stared at the cup in his hands, no readable expression. Atsushi took her words in. He wasn’t so sure what she meant. ‘’Him and I? No so.. Different?’’
‘’Yes.’’ Kyouka replied, looking up this time. She eyes Atsushi, a small glint of light in her usually dull eyes. ‘’I knew him.. he was a friendly kid.. but was full of trouble from his past.’’
The Older Male huffed and rolled his eyes, ‘’Yeah…’’
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Swap!Au where The Port Mafia and Armed Detective Agency members swap places, along side with The Decay of Angels, The Guild, and The Hunting Dogs.NOT Connected to BEAST in anyways shape or form besides Dazai, Atsushi and Kyouka being in the PM and Akutagawa being in the ADA.
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Kismet by tu1ipzlvr
Fandoms: 文豪ストレイドッグス | Bungou Stray Dogs, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
23 Aug 2025
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Dazai has always been bad with feelings.
After joining the Armed Detective Agency, he finds himself in a whole new light, navigating complicated emotions and expressing vulnerability as he gets more comfortable. Suddenly, the Agency strikes a deal with the Port Mafia—to transfer one member from the light to the dark, in exchange for protection during the battle against the Hunting Dogs. When all of that is over, it’s time for Mori to choose who will join the Port Mafia’s ranks. Upon hearing Mori’s final decision, Dazai is forced to deal with this new revelation.
Around the same time, there has been an increase in the number of heroes trying to break through the barrier between Yokohama and the rest of Japan. The new member in the PM’s ranks is forced to go on a long-term mission with the strongest ability user, Chuuya Nakahara. With the both being over the age required to go undercover as a student at U.A High, one of them becomes a teacher at the esteemed UA under the careful watch of Principal Nedzu as the other infiltrates the ranks of the LOV.
Fate binds people to things—so what will happen when Double Black is reunited and forced to work together by the string of kismet once again?
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"No one knows what it's like to be the bad man, to be the sad man, behind blue eyes."
-What if Kou and Dazai hadn't met?
Series
- Part 5 of Running Through Branches
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Roses Will Always Have Thorns by gayest_of_the_gay
Fandoms: 文豪ストレイドッグス | Bungou Stray Dogs
23 Aug 2025
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Chuuya was tired of it. Tired of always being second best to Dazai. Tired of Dazai's teasing. Tired of Dazai in general. So he made a plan.
A plan to get Dazai out of his life for good.
Or:
Chuuya accidentally gets Dazai to finally kill himself and gets a little angsty when he starts hearing his partner's voice.
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Совершенно заурядное, на первый взгляд, расследование в токийском квартале Асакуса едва ли должно было стать чем-то примечательным для Дазая в тот день, если бы не появившийся в том же месте Накахара Чуя: три года назад он покинул мафию, не разглашая причин, и теперь внезапно выныривает из гущи улиц, ведя за руку маленького мальчика. Такое событие сразу же затмевает все остальное, но только вот Дазаю еще невдомек, что оно потянет за собой и кое-что из давнего прошлого.
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陣営 | "Fate loves to play favorites, but unfortunately, I'm not one of those."
Sent back in his 7 year old self, if he could even call it "his," Atsushi Nakajima unexplainably only had little bits of his future-self's memories. With the lingering mystery of who he might used to be and on why was he even back in time, he encountered people.. People he never met but felt.. connected with?
Why? Is there some reason he atleast knows these new people by appearance?
Why does he have a feeling of gratitude to this Dazai Osamu? Why does he feel hatred from Ryunosuke Akutagawa when the boy himself says they're friends? Why was he relieved that Chuuya Nakahara was there? Why does he feel like he has the need to protect the 5 year old, Kyouka Izumi?
And why? Why does he keep connecting deeply to people he hadn't met? Why would a tear slip when he sees them? Is there such a reason?
Delving deep, one thing was for sure to Atsushi, "This isn't MY past, it's a different me. A different what could be."
I͢..... エイブリィ. . . . .
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In which a woman is placed within the Port Mafia under the guise of secretarial duty—but strings are pulled behind her back, and one executive begins to care far too much for someone never meant to remain untouched.
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Things We Hold Dear by farfromrealityyy for Princesszeldaprincess
Fandoms: 文豪ストレイドッグス | Bungou Stray Dogs
22 Aug 2025
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Chuuya primarily does overseas missions for the ADA. While he and Dazai are married, they only see each other every couple of months. What happens when a home invasion occurs when a pregnant Dazai and their son Souta are home alone? Will Chuuya be able to make it back in time?
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Atsushi accidentally gets adopted by Fukuzawa and joins the ADA Magazine as a new model?
Or
Part chatfic, part prose, all insanity modelling au, no abilities, idk wtf I'm doing.
(Previously known as BSD Modelling AU)
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Fyodor dies in front of Nikolai who out of grief and fear of loneliness (not like he would admit that) takes Sigma with himself.
The Agency takes care of the Mersault and Fyodor aftermath, but Sigma is in coma for way too long - and when he wakes up, he confronts a civilian Nikolai about his decision: he wants to join the Agency.ABANDONED for now, see the last chapter's notes.