1 - 20 of 157 Works in Soft Sigma (Bungou Stray Dogs)
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After joining the detective agency, Sigma struggles to adjust to his unfamiliar surroundings and his place among the people there. In the quiet of a shared night, he finds comfort, acceptance, and maybe something more in Atsushi.
Series
- Part 5 of Flufftober 2025
- Language:
- English
- Words:
- 1,527
- Chapters:
- 1/1
- Kudos:
- 11
- Hits:
- 49
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All in, all lost (SIGZAI FIC) by Marie1241413
Fandoms: 文豪ストレイドッグス | Bungou Stray Dogs, Sky casino - Fandom
03 Oct 2025
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Sigma is gambling but soon it turns into an argument between dazai and sigma,does sigma truly xareabout dazai?-can this be resolved or will they never cross paths again..?
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For all intents and purposes, Dazai was an alpha. Not a great alpha, but an alpha nonetheless. He was cocky, secretive, and flirty with every omega that walked his way- a typical alpha. Sort of. After a mission goes wrong and Dazai’s identity is revealed, can Dazai really resist his instincts?
TW: Explicit nsfw, self-harm depictions, manipulation, abuse.
Please take care of yourself and don't read if these bother you. This is NOT a depiction of a healthy relationship. -
Is This Love? If So It Has Me Feeling Ill by I need sleep but this will work (Remihere)
Fandoms: 文豪ストレイドッグス | Bungou Stray Dogs
19 Sep 2025
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I don't know what to put here, so here's my favorite line so far.
“Oh, Dazai dear, you truly are the ungifted in a world full of gifted.”
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Sigma always goes to the same cafe in the hope of always being served by the same employee.
Series
- Part 2 of SIGMATSU ♡♡♡
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Sigma has taken care of many littles in their 3 years of living, only at the expense of their own age regression. Yosano and Kouyou realize what they do for others and manage to get them to regress.
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After a long week, Dazai and Sigma spend the Saturday evening baking together. It's moments like this with each when they can truly be at peace.
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Nikolai has always been impossibly clingy with Sigma, slipping past boundaries with a grin and demanding closeness that no one else would dare to ask for. When he complains about “bad dreams” and begs to share a bed, Sigma finally agrees, convincing himself it’s just to keep Nikolai quiet for the night.
But when midnight falls, with Nikolai’s arms wrapped tight around him and soft whispers pressing against his skin, Sigma finds it harder to keep pretending. One kiss turns into another, and what began as reluctant comfort slowly becomes warmth, tenderness, and a closeness he never expected, and doesn’t want to let go of.
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Sigma's brain slowly starts feeling fuzzy, their last coherent thought being "I was drugged" before they black out.
AKA Sigma gets kidnapped, Fyodor and Nikolai freak TF out.
(This is Sigma's POV for most of it btw)
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It’s Sigma’s first day at the ada and it’s also his first time seeing atsushi after he fell off the sky casino
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Atsushi thinks sigma is dead, and sigma’s it’s first day at his new job -
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Dazai wants to go back to the agency, and tries his best to focus on the case at hand...
- Language:
- English
- Words:
- 734
- Chapters:
- 1/1
- Kudos:
- 20
- Hits:
- 112
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Lost man in infiltration by Fandomly_flamboyant
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), 文豪ストレイドッグス | Bungou Stray Dogs
24 Jul 2025
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Sent to infiltrate Japan's hero society from his grey Yokohama, Sigma thought it would be an easy mission. Only for him to be stuck learning about human emotions, he had never felt before. Now caught between his mission and his own awakening heart, he has to decide: spy, or something more?
(I'll probs change the summary later on, I'm sorry)
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I Dont Wanna Think About It !! by sacrificiallamb_1111
Fandoms: 文豪ストレイドッグス | Bungou Stray Dogs
20 Jul 2025
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fyodor has issues. like major issues.
basically just me projecting all my problems onto fyodor.
dont come after me pleasee
and yes this is based off the song "Me And My Madness" !!
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Sigma's first winter stroll outside of their secluded mansion, feeling prideful that he'll handle the unforgiving Russian cold. A snowy night won't defeat him. Little does he know, Fyodor and Nikolai anticipated this bravado and knew the cold would bite him, no matter how much pride Sigma carries in his stride. So they quietly prepared extra coats and accessories to rescue his warmth from the harsh cold.
This is proof that even pride needs mittens sometimes.
Also, they take many pictures together.
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Sigma didn’t need an alarm. He had Atsushi.
In a way that was better, because an alarm couldn’t drag him out of bed before he’d even opened his eyes. In a way that was worse, because Atsushi dragged him out of bed before he could even open his eyes.
Sigma and Atsushi’s morning routine as they prepare to go to the Agency.
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Leaving the bathroom, Sigma puts on some slippers and opens the bedroom door. Her senses were immediately struck with the smell of warm vanilla, butter, and cinnamon. Inhaling and exhaling softly, she takes it all in. It smelt amazing. So intimate.
She slowly made her way towards the kitchen, wooden floors creaking with each step. She immediately took notice of her annoyingly tall boyfriend. She stares at him humming along to a song playing on his headphones, slightly moving his hips to the beat.
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Sigma, the first ai robot to run a casino by itself. As a robot who’s been interacting with humans everyday, it began to question its humanity, accidentally becoming sentient in the process.
After sneaking out of his apartment, going to truly put an end to himself, dazai encounters a stranger walking along the side of the road, looking oblivious to their surroundings, he decides to hi.
UNFINISHED!!
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sigma finds himself having horrible nightmares every time he falls asleep, that strange man and weird bird haunt him everywhere he goes.
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siglai fantasy fic
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A new Angel of the Decay by sky_cas1no_regular, xPitki
Fandoms: 文豪ストレイドッグス | Bungou Stray Dogs
01 May 2025
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The only thing Sigma ever wanted was a happy family. They were happy lovers, in a happy marriage that was going well, so why not create a child who will bring them more joy in life, for whom they will care and pass the love that they can give, that they are willing to give?
They brought Theo to life. Their baby, their child, born with Sigma's eyes, with split white and black hair, and getting Nikolai's personality traits even without him being his biological father.
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DoA raising their child: Theo (his life from birth to adulthood), and Fyodor being a shitty father (yes, half of this fic is angst) + xPitki's art
FAMILY ARC (4)
Series
- Part 10 of Diary Of Angels
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The members of Decay of Angles as well as Dazai Osamu and Chuuya Nakahara receive an invitation to participate in a contest for one page of the Book. Although everything seems suspicious, out of desperation (or simply - boredom) they decide to participate in the game.
Expecting a fight for survival, the competition surprises them with its kinkiness. With each round, the tension between the participants increases, making it difficult to logically analyze the game.