microcest

18+ multifandom microfic prompts for incest pairings

[microcest]

Microcest is a weekly multifandom microfic prompt blog for incest pairings

Common Tags: #Prompts , #Works , #Announcements Microcest is also on BlueSky and Dreamwidth.

Over 1k? Use our @macrocest AO3 collection. Macrocest also hosts events and is on Tumblr, Bluesky and Dreamwidth. Want more shipcest? Check out Other Cest Events and @shipcestroleplay

Guidelines:

1. All microfics need to include incest, but every fandom is welcome! 2. Relationships can include more than just the incest pairing, but the incest pairing must feature 3. NSFW, Dead Dove and dark content is welcome, but please tag them accordingly. 4. When posting your microfic, please tag @microcest and include:

- the name of the prompt   - your word count - a note of nsfw content or triggers  (somnophilia, underage, etc.)

This might look like:

Explosion Dean/Sam | 150 words for @microcest prompt: Getting caught Warning: nsfw, gore It wasn’t supposed to have happened this way…

but you can format it in any way you choose!

FAQs:

Q: When will the prompts be posted? A: Prompts will be posted weekly on Wednesdays around 10am EST/New York timezone.

Q: Where are prompts listed? A: They will be posted here on Tumblr with the tag #microcest prompt, there is a text-only list of prompts on Dreamwidth as well.

you can also view them on our Microcest Calendar or Microcest Prompt Gallery

Q: The day for the prompt has already passed. Can I still write a microfic? A: YES! You can still submit a microfic for any prompt that has passed, just note the original prompt date in your submission.

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Q: How should I incorporate the prompt into my microfic? A: Feel free to use the exact word/phrase in your work, or just use the prompt as a general idea. (Example: if the prompt is ‘not in the swimming pool!’ then you can use that as a quote from one of the characters, or simply write about a scene where something ensues that maybe shouldn’t be done in a swimming pool.) Q: What is the word count requirement? Does my microfic need to be a specific number? A: Microfics are generally anywhere between 50 and 500 words, but if you feel inspired to write something longer, then we encourage that as well! We have a sister blog, MACROCEST, that is for longer works.

Q: Can we join a prompt from microcest with other events? A: Yes! As long as it follows the rules of both/all of the events!

Q: Is faux-cest allowed? As in people not blood related partaking in roleplay? A: Yes! Faux-cest, step-siblings, step-parents, incest play, implied incest, etc. are allowed.

Q: I have an idea for a prompt, can I submit it to you? A: Yes! Send your prompt here!

Q: I have another question that wasn’t answered here. Is there somewhere else I can ask? A: Any other questions can be asked by sending us an ask on Tumblr or emailing us at [email protected]. All of our previously answered questions can be found here.

If you ever want to submit more prompt ideas anonymously, you can do so with this form, emailing [email protected], or via our ask box. Just make sure to note it's a prompt suggestion (otherwise I'll just get messages like "Dad, hurry up!" and it will confuse the hell out of me) and we will add it to our prompt list without posting the ask so it stays anonymous/a surprise!

[whumpkink]

the death of dignity

series: butchers

written for: @microcest | #030. noncon (23.10.24)

rating: m | word count: 498

content warnings: non-graphic rape, underage, incest, omegaverse

summary: for one night, Dylan could take what Diana takes every night.

also on AO3

Instincts told her to fight. To bite and scratch.

There was no dignity in being underneath another alpha, was there? Mother was stronger than her, even if Dylan was rapidly approaching her height. And if that one doctor five or so years ago was right, she’d have two or three inches on the woman by the time puberty was done. But nothing mattered when Mother had decided Dylan was too touchy with her omega.

Mother decided Dylan was scenting her, being clingy to an omega that belonged to Mother and therefore another alpha had no right to be around it.

It didn’t matter if it was her sister, if Dylan was simply... affectionate wit her own sister. All that mattered was that mother wanted to punish her. Dylan had seen the way Diana looked at her and then mother and then stayed right where she was. After all, Diana wasn’t stupid enough to put herself between an alpha and what this alpha wanted to hurt. Dylan wouldn’t blame her, she’s thank her — keep yourself safe, I can take it.

The order was barked: undress.

She did, hands trembling. Out of fear, out of rage. The woman looked at her up and down like she was nothing but a piece of meat worth less than her time, lie she was doing this out of necessity. Dylan wondered if she could fight. Turn the situation around and not be the one that would come out smelling like blood and alpha.

In one blink, Mother grabbed her by the shoulder and pushed her to the ground. Dylan grunted as her face hit hard against it, she tasted metal. Mother pinned her wrists against her lower back. Dylan closed her eyes and forced herself to think about Diana.

The smell of blood, of corruption. The mornings she was limping. The days she had bruises on her wrists and on her neck. The bite-mark Dylan once saw on her shoulder. That sweet underlying scent she smelled on the neighbour’s pregnant wife.

She tried to relax, or something like that. She tried to take a deep breath, but other hand on the back of her neck was suffocating. Mother was rough and blunt, Dylan was sure she was bleeding before Mother was fully in.

But it was better if she was punished than Diana, her sister already always took it, didnt she? Dylan could handle it for once.

She could survive it for one night.

Even if the alpha side of her brain was growling and trashing, begging her to push back. To bite and scratch and show mother she wasn’t a little thing to be used. But it was for Diana, wasn’t it? If Mother was with her, if Mother was inside her, she wasn’t touching Diana. And for one night, the woman could rest — could sleep on her own and not play daughter-wife.

Dylan was an alpha, she could take it. She could bleed and could survive it like nothing had happened.

[fawnitte]

"No, I'm your brother."

Pairing: Neteyam x Lo'ak

Word Count: 864 words

Content Warnings/tags: incest/brocon, slight nsfw, anal fingering, possessive/angry neteyam, canon divergence

Author's note: for @microcest prompt no. 113: argument turned sexual omg netelo guys...i'm getting way too into them...hehe also posted on ao3

Don't like? Don't Read. Don't want to see this content? Block me. :)

Neteyam follows Lo'ak only to see him getting ready to ride his ilu.

"No way you're rolling out of here, baby brother," Neteyam says, the nickname slipping out like it always does. Lo'ak turns his head, watching him walk up.

"I have to warn Payakan about the pingers." Neteyam shakes his head. Payakan. Neteyam didn't get it, didn't get what made him so special.

"No, you've got to keep your skxawng ass here," Neteyam says, coming right up to Lo'ak. He moves his hands to accentuate his point. When he looks up at Lo'ak he can see the frustration appear immediately.

"He's outcast," Lo'ak says, brows furrowing as he sways, keeping his eyes locked on Neteyam. "There's nobody to warn him but me!"

"Bro..." Neteyam sighs softly, raising his hand to rest it on Lo'ak's head. This boy, always so stubborn. It was admirable at times, but not when it put Neteyam at risk of getting in trouble. "Why do you always have to make things so hard?" he asks softly. Lo'ak pushes his hand off, his head. He lets out a small huff, ears lowering just slightly. His brows twitch.

"You mean why can't I be the perfect son like you?" He asks with that stupid little condescending head tilt. Neteyam's ears flatten as he presses his lips together. Of course. Of course he'd say that. Neteyam nods, backing away and turning.

"The perfect little soldier?" Neteyam knew he was far from perfect. Far from living up to Toruk Makto. He just knew how to fucking listen.

"Well I'm not you! Okay?" Lo'ak yells, brows furrowed. Neteyam turns back towards him, an irritating anger in his chest that made itself present in his face and his tail curling up harshly. But Netyeam watched as Lo'ak's face shifted into something softer, staring at him with his big eyes.

"I'm not you."

It sounded like he wanted to be.

"He's my brother. I'm going," Lo'ak says, pointing off into the distance, turning his body without his eyes leaving Neteyam's face.

That just pissed off Neteyam more.

He felt an anger rise up his chest. It made him feel hot. That stupid tulkun was Lo'ak's brother? The one he met only a few months ago? And the audacity to say that right in his face...

Lo'ak turns to walk away the second Neteyam begins to speak. "Oh, he's your brother?" And Lo'ak kept walking away. The little shit. Neteyam grabs Lo'ak's arm tightly, forcing him to turn around and face him. Lo'ak's eyes drag themselves up to Neteyam's face again.

"No, I'm your brother," He says with gritted teeth, pointing his hand at his chest. He stares at Lo'ak intensely, wanting his point to get across. That tulkun should mean nothing compared to him, compared to his actual family.

"Get off'a me!" Lo'ak exclaims, yanking his arm out of Neteyam's grip. He lunges for his ilu, but Neteyam grabs him again. Lo'ak quickly catches his footing and turns quicker than Neteyam can see, punching him right in the face.

Neteyam lets go of him, staggering back. He gasps, looking at Lo'ak with wide eyes. Lo'ak looks at Neteyam with a fire in his glassy eyes. Neteyam scowls, tackling Lo'ak and easily taking him down.

The two begin to roll around, limbs tangling with each others as they both attempt to punch the other. The two grunt and yell, Lo'ak desperately trying to win.

Neteyam is stronger.

He rolls Lo'ak onto the ground, straddling him and holding his arms to the ground. Lo'ak squirms, grunting as he tries to regain control. When he realizes he can't, he hisses.

Neteyam hisses right back, ferociously. Lo'ak's ears flatten, eyes full of tears.

Both of them are breathing hard, hearts pounding, anger simmering. Lo'ak's breaths are shaky. He weakly hisses again, trying to get out of his grip. Neteyam leans foreward, placing more of his weight on Lo'ak as he grabs his jaw with one hand.

"Don't you ever call him your brother in front of me, okay?" Lo'ak stares, blinking as he pouts.

"But he's my spirit brother," he says. Neteyam rolls his eyes, letting go of his chin. His hand moves down, resting on Lo'ak's inner thigh, slowly creeping underneath the loincloth.

"And I'm your real brother. I'm always here, always have been, always will be. I know you better than you know yourself," he mumbles, finger pressing against Lo'ak's asshole. Lo'ak gasps, dick twitching.

"Payakan understands me. He Sees me. He's more similar to me then you'll ever be."

Neteyam clenches his jaw, shoving a finger inside. Lo'ak gasps louder this time, more akin to groan or grunt.

"He Sees you? Baby bro...I See You. Okay?" He says, pumping his finger in and out. Lo'ak whines from the pain, those tears from earlier coming back.

"Don't lie."

"I See You, Lo'ak. As much of a skxawng you are, I See You," he says softly, his finger not stopping. Lo'ak gasps softly, hips twitching. He begins to cry.

Neteyam tilts his head.

"Do you understand now? You're mine. Not some tulkuns," Neteyam says, adding a second finger. roughly. Lo'ak mewls, breath catching.

"I understand..." he moans softly.

it's 2am i'm too sleepy to end it better lol

Divider credit: @cursed-carmine // @coldxperience

[pvrplevoid]

@microcest | prompt #113 - argument turns sexual

OCs, Igor x Olga | 489 words

brother-sister incest, explicit sexual content, past parent-child incest, cheating

Igor works hard, Olga hates it... they decompress quite intimately together.

As the oldest siblings, it seemed natural that Olga would argue so vehemently against Igor’s decision of putting himself in danger.

As children of their father, it was natural that it ended with rough, angry sex.

It started when Igor, once again, came home bearing new scars. Olga now kept jars of ointment for them, and she started her usual complaints as she gently covered the newly-healed skin on his chest. He was moody enough to be grumpy about the fact she was two inches taller than him and used the difference to remind him he was her little brother.

As if a eleven months still made real difference.

He argued back, Igor was doing valuable work. The most valuable work in the kingdom. Screaming here, “I was dad’s favourite” there, and they were wrestling like teenage boys. Olga was deceptively lean, she kept up with Igor, the man built like a mountain. And he could tell she was being nice by letting him pin her down.

Or she just felt his boner, Olga was pliable like that.

Her husband probably loved it, unaware who else could take advantage of her tendency of getting extremely turned on by being roughed up.

“Sometimes I think you do it on purpose,” he pinned her wrists above her head, moved his hands down her arms and she kept them in place. She had blood on her lips, he kissed it.

“Don’t act like you weren’t expecting this.”

It was a low blow. It was the truth.

How undressed he was compared to her was unfair, would bother a lesser man. But this wasn’t soft, wasn’t lovemaking. He roamed his hands up beneath her simple dress, found soaked cotton.

“Turn.”

She did. Wasn’t she a good girl? Igor bundled up the dress, freed his own heavy, hard cock and pushed the underwear aside. Olga was as turned on as him. Her moan was almost a growl as Igor bottomed out with one long, hard trust.

He leaned over, placed a hand on each side of her head and started to fuck. The small room was filled with the lewd sounds of skin against skin, of cock sliding in and out of a soaked pussy. He bit into her neck, her shoulders. Leaving marks she’d have to hide from her weak of a husband.

Olga grabbed his wrists, her nails dug into his skin. It’d bruise, she always bruised him.

“Did you take your potions?” He remembered to ask. Olga only nodded. “Good. I’ll fill you then.”

Her cunt clenched hard in response. He was sure one day she’d ask him to breed her a child. And he would, happily. He loved her enough to do so. Igor told her so.

And growled dirty things, kept his hips pumping as the pain from his hard days of work were numbed by the simple act of fucking his sister on the floor of her home.

[microcest]

Microcest Prompt No. 114 - caught in a lie

Wednesday, June 3rd, 2026

We post multifandom incest microfic prompts every Wednesday!

Links: Info & FAQs / Previous Prompts can be filled at any time / Read 304 microcest works on AO3!

[guts-n-gore]

Bro. (Sexually charged)

[shipcest-f-f]

Freak o'clock

[matchlocks]

drew gooden gets it

[mrstellmeafuckingsecret]

"siblings or dating?" *and

[microcest]

Microcest Prompt No. 113 - argument turns sexual

Wednesday, May 27th, 2026

We post multifandom incest microfic prompts every Wednesday! Links: info and faqs on ao3 / previous prompts / read all 299(!!!) microcest works on ao3!

[shipcest]

Forgive my man he did all of that but he had a good reason (he's in love with his brother)

[eldritchsexual]

your third eye opens the second you start shipping siblings

[kalira]

Too Small

A Chronicles of Narnia story for @microcest!

Prompt: teddy bear (from July 16th 2025)

T; 500 words Peter/Lucy

Lucy, Queen of Morning, struggles in the caging bounds of a body, a life, a world that are, now, too small for her; long outgrown yet inescapable.

[kalira]

Lure

A Binan Koukou Chikyuu Bouei-bu LOVE! fic for @microcest!

T; 500 words Akihiko/Haruhiko

Akihiko and Haruhiko will get their man eventually, they’re determined - but until then . . . there are worse things than having one another, nothing and no one between.

[kalira]

Wager

A Hellboy fic for @microcest!

Prompt: you're distracting me (from July 2nd 2025)

T; 500 words Nuada/Nuala

Enough skill brought to bear renders even the deepest distraction little more than a diversion along the way to victory - and the accolades well-earned that may follow.

(Fluffy, flirty teasing-via-soulbond, long pre-canon.)

[kalira]

Restless Visions

A Moon Saga Yoshitsune Hiden story for @microcest!

Prompt: sleep walking (from June 25th 2025)

T; 500 words Tomomori/Noritsune

Something, it seems, is haunting Noritsune, and if he won't come to Tomomori on his own, then, well, Tomomori will just have to go after his brother instead.

[microcest]

Microcest Prompt No. 113 - argument turns sexual

Wednesday, May 27th, 2026

Thank you anon for the prompt!!

We post multifandom incest microfic prompts every Wednesday! Links: info and faqs on ao3 / previous prompts / read all 299(!!!) microcest works on ao3!

[semperfiona]

An Archive of Our Own, a project of the Organization for Transformative Works

Niecest flashfic