Welcome to the third annual ACOTAR Omegaverse Week!
October 25th - 31st
this is the greedy brainchild of @whatishowedyouinthedark who shamelessly wanted more A/B/O fics in this fandom, lovingly co-hosted by the wonderful @rosanna-writer
Everyone is welcome to reply to each daily prompt with a short drabble, headcanon, sketch, moodboard, or whatever else your brain desires to get the juices flowing... so to speak ;)
This will largely be a NSFW event. All posts will be tagged appropriately, but please block/filter as needed. Only YOU can manage your mental health experience online!
If this sounds like a good fit for you to squeeze into your schedule, we'd be so happy to have you. See you soon!
Guidelines
A/B/O Fic Rec List
2026 Prompt List
2026 Masterlist
2026 AO3 Collection
—
2025 Prompt List - 2025 Masterlist - 2025 AO3 Collection
2024 Prompt List - 2024 Masterlists - 2024 AO3 Collection
divider image by tsunami-of-tears you can find them here
I fucking love when people give in-universe reasons for omegaverse shenanigans being a relatively new phenomenon and not just a fact of life. And this is probably my favorite out of all of them. Insane choice, and I want to kiss the author sloppy style about it.
As we all know, the Spanish Flu caused the omegaverse. Iconic.
"We need to go back in time to show Gorge Orwell the state of the internet." "We need to go back in time to show Marx modern capitalism." Man up and go back in time to show Sigmund Freud Omegaverse.
Updates to "No Fandom" Additional Tags, January 2026
AO3 tag wranglers have canonized some new "No Fandom" additional tags and revised subtag and metatag relationships of existing "No Fandom" canonical tags. Check out the latest news post for details: https://otw-news.org/2v38xznc.
You probably already guessed these, but we hope this list gets you all hot and bothered and ready to create some juicy works of art for us ;) have fun!!!
Day 1: Lust
Some say heats and ruts are the most powerful force on earth - could you resist the temptation?
Day 2: Gluttony
Who ever said indulgence wasn't the key to happiness?
Day 3: Greed
One mate, two mates, three mates, four,
five mates, six mates, seven mates, more :)
Day 4: Sloth
What's better than a day lazing about in a cozy, warm nest?
Day 5: Wrath
Those Alphas can get awfully touchy sometimes when someone tries to take what's theirs, can't they?
Day 6: Envy
Thou shalt not covet thy neighbour's mate...
...unless?
Day 7: Pride
They say 'pride goeth before the fall' but that applies to other people, surely
Happy ACOTAR Omegaverse week! Enjoy the Nessian smut inspired by the humidity <3
Read on AO3.
Preview:
“You’re making a mess where you sit. You didn’t even bother wearing any underwear.” Cassian spoke, his eyes on Nesta’s.
She blushed heavily, more slick spreading.
“Please.” Nesta begged. Her hips tried to buck, but with his grip there was no success.
“You’ve messed with your Alpha for too long. Hold your thighs apart. If your hands slip, I’ll stop.” He growled, arousal dripping from his speech.
@acotar-omegaverse-week
The rain clattered against the windows of the House of Wind, covering the glass spaces with hundreds if not thousands of water droplets. The pitter-patter echoed loudly from inside the private library where the eldest Archeron lay.
Typically from the last several years that Nesta had lived in the Night Court, the summer months brought in heat but nothing like the humidity she grew up with. However that all changed over the course of this current summer. The humidity had strike record breaking heights in over four centuries. And that humidity was infinitely worse as a fae now. With sharp senses and heightened sensitivity to heat, Nesta stayed cool in her home, not wanting to venture outside, even for Valkyrie training.
Although they’ve canceled several times this week already with the temperature being so unbearable. Not even the rain helped the heat. It made the humidity fifty times worse. Although it gave Nesta more time to stay inside as she settled into the latest romance she was reading.
The omega adjusted herself in the loveseat, wearing only a silk scarlet nightgown that barely touched her thighs. The limitation of clothes helped somewhat with the strong temperatures, however since Azriel was away on a mission, the lack of peering eyes and annoyed sighs were nowhere to be seen or heard giving Nesta the incentive to dress in her gown.
Her gaze dropped to the next line on the page, trying to take the scene at a slow pace. Her teeth sunk into her pouty lip as arousal flooded her veins, reading the sentences of two lovers entangled in one another. His big calloused palms kept her thighs apart, leaving her center defenseless against his battle marks. He licked his lips as a cry for need slipped from her, a prayer to every god. When was her alpha going to claim her—
“You just can’t help yourself, Nes.” A voice broke Nesta’s concentration from the novel. The fae female peered over the love seat, glaring at Cassian who leant against the doorway. His signature smirk on full display. Having just the siphons on his hands, he stood bare chested with only underwear on.
“I don’t know what you’re implying, Cassian.” Nesta countered, quickly shutting the book, careful to take note of the page number.
“Oh I think you do, Nesta.” His smile showed every tooth as he approached her. His husky forest scent flooded Nesta, who shook her head slightly. 113. You’re on page 113. Don’t pay him any attention—
Her thoughts stopped as his underwear collided to the floor. His hard thick length near eye level. Her mouth drooled while her cunt grew wet with slick. Reaching over, Cassian grabbed her book from her grasp and began to read outloud.
“When was her alpha going to claim her? Would he make her beg like the previous night with his tongue in between her legs? To wake up the next morning with still no claim mark? Her womanhood couldn’t stop the slick that left at a fast pace, staining his sheets–”
A yell of embarrassment echoed around the room as Nesta pushed up against Cassian. His naked body was hard all over against her softness.
“Stop it, Cassian! You have no business reading that!.” She stood on her tiptoes reaching for her book, but Cassian was just taller and faster. He shifted the book into his other hands before continuing.
“Suddenly her alpha squeezed her thighs hard, keeping her legs apart. ‘My what a lovely mess and I’ve barely touched you, Pet.’ Her alpha groaned. His lips leaned down to her center, engulfing her womanhood into his own twisted kiss.”
Cassian shut the book before it dropped to the carpeted floor. Nesta continued to glare as her face matched the color of her gown.
“Nesta.” Cassian purred.
The female didn’t respond to her name. Instead her mind spent all of her energy to block out the wave of lustful desires crawling to the light.
Stupid omega brain.
The alpha gently pushed Nesta down, her butt landing in the loveseat. A quiet oof escaped her as her thighs rubbed together.
“Now Nes, if you were really that serious I know you would’ve taken the book from me. However, you didn’t even try. Does my omega want something?”
Nesta whimpered, her omega mind fully taking over. It wasn’t even her heat yet, but the basic biological need impacted her greatly.
“It’s too hot for this.” The omega whined as Cassian dropped to his knees. He glared at her as though the temperature was just a mere challenge.
“The humidity is making your scent stick everywhere in this damn house. I can’t go anywhere without smelling your scent. Your forest flames and ocean salt. Your desire grows by every filthy word you’ve read in this book.” Cassian pushed the coffee table away from them as he took Nesta’s thighs in his hands, keeping them spread.
“Cassian!” Nesta squealed as she tried to close her legs, but his grip didn’t lighten up. It only strained as a growl erupted from his throat.
“You’re making a mess where you sit. You didn’t even bother wearing any underwear.” Cassian spoke, his eyes on Nesta’s.
She blushed heavily, more slick spreading.
“Please.” Nesta begged. Her hips tried to buck, but with his grip there was no success.
“You’ve messed with your Alpha for too long. Hold your thighs apart. If your hands slip, I’ll stop.” He growled, arousal dripping from his speech.
Quickly Nesta’s hands went over to where Cassian’s were, keeping her legs in the same position. His gaze met her as if to voice you can say no. Nesta slightly nodded, her consent given. His smile faded to a filthy grin.
“Who does this cunt belong to?” Cassian asked, his tone slurred in yearning. His gaze fell to her cunt, watching the slick build up. A finger barely passed by causing Nesta to gasp.
“Cassian…Cassian please.” Nesta begged again.
“Begging won’t do you any good. There’s nothing stopping me from tying your legs apart and taking you into the city to make the crowds watch you.”
Nesta whimpered, her cunt pulsing at the image in her head.
“And if I were to do that, they would watch us. Watch me claim you. Fuck you. Breed you. Knot you. Watch my pups grow inside you.”
Nesta cried out as another phantom wave of pleasure flowed by her clit.
“It’s yours. My cunt is yours.” Nesta broke, quivering in need.
“And who am I, Nesta?”
“My mate. My love. My alpha. My alpha. Alpha!” She screamed.
Then his mouth was on her and Nesta erupted into stars and madness. She bucked and cried, the pressure of his tongue and hands were too much and not enough all of the same time. His fingers stretched her full, getting her ready for his knot. Cassian then pulled his lips away, far enough away he couldn’t taste her, but shivers were crawling up her spine feeling his breath on her.
“By the Cauldron, Nes. This amount of slick should be illegal. I’ll never get used to this, Omega. All of this for me.”
The praise made her cunt clutch around his fingers. In response he curled his fingers inside her making Nesta finish all over him. Her legs shook in her hands as she tried to stay in place. Cassian chuckled at her response.
“It’s cute that you think you could be done after that. Even after all these years your omega cunt can’t handle me huh.”
“C-Cassian I won’t last. P-please give me your cock. Your knot.” Tears pricked her eyes in desperation.
“Knot your omega.” Her whole body glowed from the heat around her.
Cassian yanked Nesta’s hips to the edge of the couch before his lips and tongue were back in and around her. Nesta screamed at the pleasure as she felt his hands on her thighs. She took this as the okay to move her own from her legs. Muscles strained as her hands tangled into his black hair.
Cassian growled causing vibrations against her clit. Nesta swore bucking her hips into his mouth. His tongue tasted her everywhere. Not one space was left untouched for even his tongue found the way to her pink pucker. His mouth traveled everywhere, nipping all over the sensitive areas.
Nesta yanked at his hair, nails pulling at the roots. Another wave crashed into her before she came again, slumped against the loveseat.
Gently he pulled away from her, letting go of her legs. Nesta cried at the loss of touch, her cunt pulsing from two orgasms. Cassian sat down next to Nesta. Her desire went into overboard, she climbed over his legs with a thigh on either side of his.
“I can’t get enough of you, Nes.” He breathed. His hands curled around her waist.
“And neither can you.”
“Is my omega going to claim me?” Cassian titled his head, catching Nesta’s ‘fuck me’ glare, as he liked to call it.
Nesta’s own smirk played against her lips. “Maybe this omega should get one of her knotting toys. Wouldn’t have to wait this long—”
In seconds Nesta was lifted up with ease before Cassian pushed his cock inside her. She gasped, shaking at the sudden stretch. Her eyes rolled into the back of her head at the sudden pleasure.
His hand grasped her throat, pulling her face towards his. Cassian glared at her, teeth and all.
“Unless I don’t have the urge to fuck you, that should never been an option when we’re together.”
“You’re an alpha so I imagine your urges are always there with your hand to help.” Nesta spoke in a breathless bratty tone.
His grip tightened, making Nesta see stars.
“Since you decided to have an attitude, Omega, you can do everything yourself.” Cassian smirked at Nesta’s opened jaw. Before she could say anything, his free hand slapped her ass hard. She yelped, her cunt squeezing his cock.
“Fuck I love it when you do that..” He looked at her, the smirk still there.
“What are you waiting for? I mean you mentioned toys so you know how to do it yourself.” Cassian encouraged, knowing that Nesta made a mistake by opening her mouth.
“Be a good omega.” It was a demand, not a question. Not a request.
Humiliation rushed from her cunt to her face. Pink burned her skin as slick increased. Slowly, Nesta raised herself up and down on his cock. She placed her hands on his legs near his knees, keeping her balanced and giving the momentum she needed. Her chest heaved, breasts rising and falling at every move aching at her journey. His cock hit all the right spots as Nesta fucked herself. Her slick covered him fully, the stretch burning in lust.. She gasped, gazing at him with desperation.
“Cassian..Cassian please. Alpha please!” Nesta begged, her whole body flushed. Then strong hands were at her hips making her move at a rough and faster speed. Cassian took control, their scents mixing with one another.
“That’s right, Omega. Take my cock. Take my knot. Let me breed you.”
Nesta shivered at his words as she clung to him, her arms around his neck. Their lips met finally in a tangle of kisses and bites. After a moment, she pulled her bruised lips away, trailing them to her claim mark between his neck and shoulder. He shuddered as Nesta kissed and licked and nipped at the scarred skin.
Cassian yelled, his hips thrusting faster and faster.
“Look at you. My omega. My Nesta. My mate. Taking my cock so well. Worshiping the claim of our bond.” His hands squeezed her hips hard as the pressure escalated.
Nesta couldn’t comprehend anything as she felt them come together before his knot entered her, locking her to him. Only their breathless moans were heard.
Inside she felt the endless stream of cum. Nesta sighed, her face nestled into her claim mark. Cassian’s lips found the mirrored claim on her body, and sucked on the skin. Nesta whimpered, becoming overstimulated. Taking note that she was near her end, Cassian gently kissed her as his knot stopped.
“Let’s go clean up, Omega. You’re ready to pass out and Azriel should be back soon and I don’t want to be yelled at for the fourth time this month for not having clothes in common spaces.”
Nesta nodded, her voice unavailable. She tucked herself into his body as he stood up and marched from the private library.
Maybe the night court should have more of this weather.
Hey sorry to bother you, but I saw you posted the masterlist for the event and I didn't see my work in it. Were you only linking works posted on tumblr or something? Because I posted my fic on Ao3 in the 2025 acotar omegaverse collection (https://archiveofourown.org/works/67994996). I guess it doesn't much matter if the post has already been made, but. If it is just linking to tumblr posts, I understand.
Hi! Yes I'm so sorry I only looked through tumblr posts. I'll add it now!
Check out all our amazing 2025 contributions here! Thanks to everyone who participated <3
Day 1 - First Heat/Rut
Comfort by @littlest-w01f (Azriel x Vanserra!sister reader x Eris)
Somewhere Safe to Land by @whisperingmidnights (Cassian x Nesta x Gwyn)
The Gold and the Rust by @thesistersarcheron (Feysand)
it's new (the shape of your body) by @rosanna-writer (Cassian x Amren)
Buried Beneath by @tadpolesonalgae (Eris x Reader x Elain)
Between the Jaws of Fate by @astra-aeterna (Feysand)
Bat Boys First Heat/Rut Fic by @nus4y
Day 2 - Pack Bond
OMEGA by @thevalkyriesshadow (Gwynriel)
Housewarming by @whisperingmidnights (Azriel x Gwyn x Elain x Lucien)
In Silt and Sun by @jules-writes-stories (Thesan x Sahar)
Azris Fanart by @nus4y
Found by @littlest-w01f (Feysand x Reader)
Shared by @tadpolesonalgae (Rhysand x Reader)
Day 3 - Purring & Cuddles
OMEGA by @thevalkyriesshadow (Gwynriel)
Awake in the House of Dreaming by @whisperingmidnights (Gwyn x Azriel x Nesta x Cassian
Learn Your Lesson by @tadpolesonalgae (Azriel x Reader x Eris)
Perfect Cuddles by @danikamariewrites (Azriel x Reader x Nessian)
Salus by @whatishowedyouinthedark (Feysand)
and they were roommates! (oh my god, they were mates) by @borgeslabyrinth (Feysand)
Day 4 - Knots & Ties
Bodysuits & Backshots by @futurehunt (Azris)
Pomegranate Season by @lady-bluebird-luv (Feysand)
Practice Makes Perfect by @whisperingmidnights (Elain x Azriel x Gwyn)
Tensegrity Fanart by @witchlingsandwyverns commissioned by @whatishowedyouinthedark (Feysand)
Three Days, Four Nights new chapter by @thesourcabbage (Azris)
Promised by @jules-writes-stories (Azris)
Azris fanart by @rentfreeatticsquirrel
Soft and Sweet by @tadpolesonalgae (Amren x Reader x Feysand)
Between the Jaws of Fate Chapter 2 by @astra-aeterna (Feysand)
Day 5 - Ravaged & Ruined
Promised Chapter 2 by @jules-writes-stories (Azris)
Gwynlain Drabble by @rosanna-writer
At Least Dinner Will Hold by @whisperingmidnights (Tamlin x Feysand)
Day 6 - Monster Mayhem
A Friend In Need - Tamsand fanart by @fourteentrout
A Friend In Need Part 2 by @fourteentrout (Tamsand)
Repulsive by @tadpolesonalgae (Koschei x Reader x Elain)
Day 7 - Free Day
OMEGA by @thevalkyriesshadow (Gwynriel)
Let Me Take Care of You by @icey--stars (Azris)
Do Me Like I Know I'm Yours by @dottielovegood (Feysand)
The Bitching of Beron Vanserra by @g00seg1rl (Bryaxis x Beron)
divider image by tsunami-of-tearsyou can find them here
Thank you so so SO much to everyone who has participated this past week and made our dream of more acotar omegaverse true!!! <3 We're going to be compiling the masterlists over the next few days so stay tuned for that post :)
The biggest shout out ever to the lovely, wonderful, clever, talented @rosanna-writer without whom I could not have made this week happen (and who gently reminds me when i accidentally reblog posts to the event page sdhjfbsdfjsdfk) LOVE YOU! <33
Summary: Bryaxis flees to Autumn after the war, ravishing a fishing village to carve out solace. Their presence seemed invariable to his forces or sons so Beron attempts to drive out the invading monster by his lonesome. A mighty High Lord with lifetimes of battle training and an alpha designation to boot was nothing to snort at. It was also nothing to Bryaxis, not when they needed peace.
Snippet below the divider and all 4.7k over on ao3 for free day of @acotar-omegaverse-week 🫶
Too many arduous centuries have passed for Beron to still be shocked there were some things he’d have to handle himself or they would never be accomplished.
When Eris kneeled before his throne and reported a laughable failure after being tasked to lure, trap and expel ‘Bryaxis,’ Beron knew what had to be done.
Night, those incompetent fools, had let loose and lost control of the monstrous being, who had found a clearing smack dab in Vasherham to call home.
“I’ll take care of it myself,” Beron grumbled, rising from his velvet cushion to amble towards the courtyard. Not even he, as High Lord of the damn place, could winnow within the throne room. Precautionary methods.
“Apologies, father.” Eris kept his head hung. The beta knew his place well.
He looked back when he reached the archway, “Stand up, Eris,” he ordered gently but firmly, a soothing wave of mulberry and headying his command with lordly power.
Beron had already winnowed before Eris could unbend a knee.
The expected smell of fish guts was jarringly absent as Beron appeared. All smells were absent. All of it was jarring.
Trees and grass had ripped from the soil now bare to fog clouded sun. Only one, malnourished and charred tree of birch stood amidst the chaos. The dirt penetrating his penny loafers made him cringe as he strode towards where a dock should be.
Much to his dismay but little to his shock, the row of gutting and bartering stands were ruined. The dock itself was ashamble. Beron swallowed sand as he took in the damage, the lack of life and sorrow. Where was everyone? Why was no one mourning this loss? Where was the spared messenger? Where was the fucking purpose!? This was but a fishing town!
He couldn’t smell himself, his powers felt dimmed, rationed.
The drumming of his heartbeat was the only sound and it alone was overwhelming, thumping. Despair led him to spiral, he comforted himself that it was because he was distracted that his shield wasn’t tripped by the voice timbering beneath his skin.
He knew though, he knew deep down his mind would’ve had no chance against the Sigma.
Leave. Now. This is no longer yours.
His body froze of its own doing, the fog thickened. The voice was masculine, deep and gravelly, like the groan of timbering trees, ancient and final, it burrowed beneath his skin and strummed his spine.
“Show yourself, thief,” Beron spat.
Brace yourself, fireboy.
This vision of Bryaxis was a reference to @velidewrites fanart of him, I’ve been drooling thank you 💗 and thank you so much @jules-writes-stories for beta reading ily mamas, and @the-darkestminds for helping with conceptualization, I love conceiving things with u pookie! And thank you @thesourcabbage @nus4y and @queercontrarian for feedback 🧎♀️😘😘💗
My lovely freaks and friends: @futurehunt @iftheshoef1tz @palomita-de-la-sangre @pippsmcgee @mistandmemories @chunkypossum @buffy-vanserra @makinglongwordsslutty @nightsandflamess please let me know if you’d wanna be tagged in my random acotar bs! Mwah 😘
Pairing: Feysand
Modern AU + Omegaverse
Written for @acotar-omegaverse-week (day 7)
Word count: 7145
───── ･ ｡ﾟ☆: *.☽ .* :☆ﾟ. ─────
Heat has started
Feyre’s thumb hovered over the blue button on the screen. Was she really doing this? Could she really spend her heat with a stranger that had been selected for her by an app? What if the agency had made a mistake? What if she had made a mistake in trusting them? A very expensive mistake…
But then again, what was the alternative? To spend it alone? To go out in the night and ask the first decent-smelling alpha she meets to accompany her home for a four day fuck fest? Yeah, that wasn’t unsafe at all. And there was no chance in hell that she would go through another heat alone.
