Chapter Text
Alicia quietly opens the door to her sister's bedroom with a glass of water in hand and wrinkles her nose at the pungent smell of an alpha in rut. She holds her breath as she tip toes over the threshold and quickly closes the door behind her, all too aware of the argument that will ensue if her parents catch her.
In their family, Alicia is the only omega. Papa is an alpha, as is Clea, and then Maman and Verso are both betas.
Their parents had been horrified when their youngest first presented, not having the faintest clue of how to support a teenage omega. Luckily for them, they have a daughter with a habit of burying her nose in a book, and those mischievous words had taught her all about omega biology before her tutors so much as acknowledged it.
The only thing her books did not teach, and that Papa pointedly and awkwardly refused at all to speak about, was the flip side of the omega coin. The biology of alphas.
All Alicia knows for certain is that alphas have a rut, that typically occurs twice a year, just like omegas typically have two heats. Alicia's heats have always been awful. When it strikes, the youngest Dessendre will always find herself helplessly clawing at the sheets, locked in her bedroom with the stench of her own musk as the rest of the family keeps their distance.
It's terrible. She hates it, and, when her sister is in rut, the same thing happens to Clea.
It was pity that drove Alicia to sneak downstairs in the early hours of the morning and fetch a glass of water for her elder sibling. She made extra sure that the rest of their family was asleep before sneaking in, freezing momentarily at the sounds of Verso snoring in the room next to hers. Their brother has the misfortune of having the smallest of the bedrooms in the manor, sandwiched in between the rooms of both his sisters.
Inside Clea's room, the commanding scent of an alpha is so thick that Alicia all but chokes on it. Her nostrils burn at the smell, a fiery mix of gerberas and cinnamon. Every Dessendre has the faint aroma of gerberas entwined with their natural smell. Maman grows them in her glass house at the top of the manor.
Lost in her rut, the curtains of Clea's room are haphazardly drawn, and the first light of dawn flitters in through the windows. The black and gold room is partially illuminated, and in that light Alicia spies the form of her sister curled up into a ball on the bed, the covers kicked off onto the floor as her fingers fist the sheets.
Even asleep, her rut is torture.
It isn't fair, Alicia thinks as she tip toes across the room to her sister's bedside. Betas have all of the luck. They don't have to suffer through the hormonal changes that alphas and omegas do, and they don't have to worry about society treating them as feeble or dangerous either.
The smell in the room makes her head feel funny. It's a feeling she has only felt once before when she took a trip into Paris several years ago, and crossed the path of an alpha in the early stages of their rut in the street. Her chaperone at the time, a tutor, had steered the then teenager swiftly away from the demanding sour scent that made her cower. It's an effect that alphas in rut tend to have on omegas.
She needs to leave quickly.
Setting the glass on the bedside table, Alicia briefly glances down at Clea's sleeping form and freezes at the sight of her sister's black eyes staring back at her.
That is another thing that happens to alphas in rut. Their natural eye colour turns dark as their hormones take over, and their pupils are blown up to twice their normal size. It makes the already intimidating elder Dessendre look somehow even more terrifying.
"C-Clea," Alicia whisper-hisses, gasping in surprise. She thought her sister would have been out cold for the rest of the week. That's how it always is with the suppressants that Maman and Papa give Alicia. "Sorry, I- I was just bringing you water."
She points to the glass rather uselessly, and Clea's sharp eyes trail all the way down her shoulder and arm towards her finger, then dart across to the water on the bedside table before snapping back to her again.
The elder sister does not so much as blink or move a muscle. Her predatory stare holds Alicia in place, demanding eye contact as her scent glands release a fresh wave of musk into the suddenly cramped room.
"I'll just go." The youngest in the family takes a step back and turns around, finding herself sweating and trembling all over.
Only the faint padding of her socked feet can be heard in the room as she crosses to the door. When she reaches for the handle, the hair prickles on the back of her neck, and suddenly there is an alpha behind her.
Clea slams her hand into the wooden panel and forces the door closed when Alicia tries to open it. The youngest Dessendre jumps with a gasp and goes completely still, petrified that the noise will awaken their parents or Verso, and that one of the three will soon come running.
A minute passes in absolute silence. No one is coming. She relaxes, and then, glancing back over her shoulder and meeting Clea's eyes, tenses again.
The alpha has Alicia crowded against the door, watching her hungrily with one hand pressed firmly against the door. The wood creaks under the force of Clea's fingers where they clench and almost break it.
"Clea?" Alicia breathes, not knowing what to do or what to say. She has never seen her perfect sister in such a state before.
Panting - ruts make alphas pant, she didn't know that - Clea tilts her head forward until she is eye level with her shorter sibling. Her chest heaves as she takes a deep breathe in, her bosom straining against the half done up buttons of her smart blouse.
"Alicia," Her sister purrs. The rut makes her voice sound different too. Now it is deeper, devoid of snark and far more alluring. Clea looks at Alicia with an expression that the youngest has never seen on her. Curiosity. Intrigue. "You smell divine."
"Um," The omega shifts from foot to foot nervously. She doesn't like this, being trapped against the wall with the taller woman behind her. "You're in rut." She states the obvious.
Clea hums in reply, at the same time bringing her free hand up to trail it down Alicia's side, before wrapping her arm tightly around her sister's waist and crushing her back against her front. Alicia gasps at the sudden movement, and squirms as she feels something long and hard dig into the small of her back.
Her sister dips her nose against the side of Alicia's throat and takes another inhale, drinking in the omega's lovely scent. A low rumble builds from deep in her chest, reverberating through her torso and into Alicia's.
"Clea!" The younger sister whispers in protest, scandalized. The arm around her waist tightens and is immovable like a band of steel.
"Yes?" Clea asks teasingly.
She traces her nose down the slope of Alicia's throat until it is resting just above the sensitive skin of her mating gland. Growling quietly, Clea slowly parts her lips and flicks out her tongue to taste the cloying sweetness.
Alicia flinches. "S-Stop!" The motion makes her entire body erupt with tingles, and she thrusts her elbow back into Clea's stomach to remove her.
The alpha barely moves, however, being biologically stronger and more physically gifted than any omega could hope to be. All Alicia manages to do is to annoy her, and she cowers slightly at the rush of air that leaves her sister's lungs and fans against her throat teasingly.
Clea's hand digs into her side, the silk of her nightgown almost tearing beneath her fingers. She glares at Alicia in the faint light. Her eyes are darker than ever.
"Careful, sister." The alpha snarls. With a roll of her hips, she grinds the hard length of her member against the omega's backside, making her gasp. "I don't mind playing rough."
Alicia's face blushes as red as her hair. "L-Let go!" She hisses, still mindful of keeping the volume down. Being caught by their parents will be worse than this.
"No." Clea replies, and the two stand in silence for a long moment locking eyes.
Watching. Waiting...
Alicia moves first, and she realises belatedly that the alpha was expecting her to. She throws her hands up to push Clea harshly away by the face, and as she does so her sister stands up to her full height and turns her head out of the way, seizing the omega around the waist with both arms and throwing Alicia over her shoulder.
The youngest Dessendre panics as the world spins, and before she knows it Clea has carried her across the floor and thrown her down on the bed, where she bounces.
"W-Wait!" Alicia tries kicking the alpha away. Clea catches both of her ankles in firm hands and drags her forward, until the younger sister's legs are bracketing the elder's and their hips are pressed flush against each other.
Despite herself, Alicia whimpers.
Clea's member is hard against her clothed slit.
"Stop -!" Alicia shouts properly then, to hell with staying quiet, and instantly Clea presses a hand against her mouth and pins her head back down on the mattress. When the omega thrashes underneath her, the alpha groans at the wild friction, and swiftly captures Alicia's wrists in her other hand and pins them above her head.
Then she leans in, gently pressing their foreheads together. The brown hairs of Clea's fringe tickle Alicia's eyelashes. The alpha is lost in the throes of her rut, but still manages to look at her sister with such love and devotion.
While looking into her eyes, Clea slowly starts thrusting forward with her hips, grinding her cock against her sister's center.
"Mmphf!" The omega screams, muffled and panicking. She fights to be free.
All her movements result in are a meaty, hardened cock and a frustrated alpha. Clea huffs above her, naked as the day she was born, with only a flimsy layer of cotton underwear separating her member from Alicia's center.
The alpha's thrusts become more erratic. Lost in the need for release, and entranced by the omega beneath her, Clea snarls and growls as her hips push down hard against Alicia's.
She finds a new angle that makes the omega's heart stop, and the youngest Dessendre whimpers against her sister's palm as that meaty shaft glides forcefully over her clothed clit, making sparks fly from the bundle of nerves and up beneath her flushed skin.
Instinctively, Alicia's body releases a sour smell that makes Clea's nose wrinkle and her thrusts hesitate. The stink of a distressed omega.
But in her rut brained state, all that Clea registers is the fact that the woman beneath her is indeed an omega and her thrusting quickly starts up again. Her thick member grinds against Alicia's clit again and again, and soon the girl's panic is mixed with a low level pleasure.
She shakes her head frantically as tears flow freely from her eyes at last. Unable to get out from under her sister, and unable to look away from the dominant stare that captures her own, Alicia bares her teeth and sinks her canines into Clea's palm.
The alpha yanks her hand away quickly as blood pours from it, and Alicia opens her mouth to scream. All she has to do is scream and the rest of the family will wake up, and then Papa will come and save her -
Clea flips her over and pins Alicia face down in the pillow, so that her shouts are muffled against the fabric. With a warning snarl, the alpha wraps her arms around her sister's waist and pins her smaller arms to her sides. She grinds her hips against her from behind.
The youngest Dessendre weeps into the pillow. Sobbing - at least in this position there is no pressure on her clit - she opens her mouth wide and screams as loud as she possibly can.
It gets her nowhere. The sound does not travel, and the only noise that emerges from Clea's bedroom is the sound of her headboard slamming against the wall as she grinds against her sister - a sound that is to be expected of an alpha in rut and will not raise any alarm.
The omega squirms as Clea's hips start to slow. Her sister huffs and puffs against her ear, hot breaths tickling the reddened shell.
With a long, low groan, the alpha falls apart and spurts her seed all over the back of Alicia's underwear and her rucked up nightgown. It's temperature is almost scalding, much like the woman above her, she realises. She sobs in disgust as fat globs of cum dribble down the curve of her ass to the backs of her thighs.
Clea's release seems to last forever. There is so much of it. Why is there so much?
"Haaa," Her sister collapses on top of her, with her still hard member wedged in between Alicia's cheeks. The alpha's breathing starts to even out as she slowly comes down. She weighs a ton, the omega realises as she tries to crawl out from under her. Clea is only a sculptor, but her status as an alpha has still left her with rows upon rows of rippling muscles.
At least it's over now. With time, this event will become some horrible, awkward memory, and something they will never ever speak about.
Alicia can't believe she was so stupid as to come in here. What was she thinking? Omegas can be around an alpha in rut!
"H-Hey," She gulps as Clea starts to come back to herself. Her sister's orgasm should have taken the edge off, but when she lifts her head to meet her eyes Alicia finds Clea's eyes to be pitch black and filled with wanton hunger. "Can you let me up?"
She wants to get out of here are quickly as possible.
Clea grumbles. Mercifully, the alpha pushes up with her arms and completely lifts her weight off of her, and Alicia cries with relief as she scrambles to get off of the bed.
But then Clea catches her as she goes to sit up, turning Alicia over and pinning her down on her back with her still bleeding hand covering the girl's mouth. She uses her superior weight to pin the rest of her, and grabs her younger sister's cum stained underwear and awkwardly yanks them down her long legs until they rip. Then she throws the fabric over her shoulder onto the floor behind her.
"Mmmmphf!!" Alicia flails and kicks out. Before she knows it, Clea has grabbed her hip and pulled the youngest Dessendre's hips up until she is bent almost in half with the way she is lying, and gravity causes the hem of her nightgown to fall down and leaves her bottom half bare.
The alpha moves her hand up, with her fingers gripping the skin hard enough to bruise, and drags her sister's leg to the side to expose her center.
Clea's blown wide pupils narrow at the sight of her prize. While Alicia thrashes and flails helplessly, the room now reeking with the combined smell of a rutting alpha and a petrified omega, she leans in to part those folds with her hot tongue, licking across that tight entrance and stopping with a flourish on her clit.
Muffled behind her sister's hand, Alicia wails. She shouts and fights but it does not matter. She bites Clea's hand again while her nails rake down the woman's arms and draw blood.
The alpha does not so much as flinch at it. With a pleased rumble, Clea buries her face in her sister's cunt and begins lapping at her core like she is starved. Desperate for more, the alpha showers the omega with attention, her dexterous muscle opening Alicia up until she is properly able to taste her.
Beneath the assault, Alicia howls and thrashes from side to side. Each pass of the alpha's tongue against her clit is torture. Clea knows exactly what she is doing - she licks and flicks and teases, and her sister's back arches with pleasure, no matter how unwilling.
Sweetness begins to pour from Alicia's center and sticks to her tongue. The taste of slick makes the alpha's eyes roll back in her head and she fucks her sister harder, sealing her lips around her clit and suckling on it. The action produces more nectar, and the more Clea tastes the more erratic her movements become.
Sobbing and moaning, Alicia whines as her hips begin to move of their own accord to grind against that tongue and face. The alpha above her rumbles delightedly, and soon the hot swipes of her tongue, harsh sucks and kisses have the inexperienced Alicia falling apart.
Her body tenses as she throws her head back and shouts and moans. Her nails dig into the back of Clea's hand that covers her mouth as she claws at it. All she needs to do is scream, and then her family will come running -
Clea's tongue snakes down from Alicia's pearl to lap at the nectar from her channel. The omega's walls clench around nothing at the sensation, and she rages against that one small part of her, the primal instinct that demands that Clea push in -
She does, and Alicia moans sinfully as her sister's tongue plunges into her tight pussy - the first ever to breach her virgin walls. The alpha pauses for a moment to revel in the source of her sweetness, with her nose tickling her clit as Clea's long hair flows freely behind her.
Then she starts to move, and Alicia howls and screams and yells as her sister plunders her center ruthlessly, demanding that the omega's walls yield to her so that she can taste even more. Her rut has filled her with a frantic stamina and she shows no mercy.
When she flicks the tip of her tongue inside of her, Alicia's eyes roll back in her head. A coil is tightening in her belly, and their bubble of pleasure feels like it might burst at any minute. She barely has time to worry about what this feeling means before Clea grazes against a particularly sensitive spot inside of her and white lights explode behind her vision.
It is at once the greatest and most terrible thing she has ever experienced. Alicia cums screaming while the alpha laps frenziedly between her legs, working her over the crest of it.
The air is thick with the smell of the two of them together and the musk of a rutting alpha gnaws at Alicia's baser instincts. When she comes back down again to find that Clea has not stopped her movements, but has in fact doubled down on them and licks at Alicia's trembling inner walls with a renewed purpose, the omega's back arcs and she cums a second time with barely enough time to catch her breath.
The third orgasm takes them far longer.
Alicia is sore and sensitive and scared. She has scarcely the energy to fight but keeps up her futile battle none the less, looking woefully pathetic as she claws hopelessly at the arms of an alpha who is determined to drag her over the edge.
Her back hurts from being stuck in this position. Her legs hurt from being held far apart. Her core pulses around Clea's tongue as it rubs circles into the rough patch against her front wall, where Alicia feels so incredibly sensitive and soon the tingles are spreading across her body all over again.
She cums again with a strangled moan. Her throat is hoarse from screaming, and her center pulses with raw heat.
Clea finally pulls her mouth away and lowers Alicia's hips back onto the bed, easing the strain on her back. The sun is well over the horizon now, and in the light Alicia can see her own slick dripping from her sister's lips, positively coating her neck and chin. She looks away, blushing.
Panting as she comes down, her limbs heavy with exhaustion, Alicia despairs as the alpha cautiously removes her hand from her mouth only to use it to grab the omega once more by the hips and drag her down until they are hanging over the edge of the bed.
"What now?" She complains tiredly. Her books did not do the matter justice. Alphas in ruts are completely inhuman, as, supposedly, are omegas in heat.
Alicia cannot think of anything else more sinful than what Clea has already done to her, but soon learns what her sister has planned when she feels her sink one finger inside of her. Moaning quietly, her throat is scratchy and raw, she winces as her walls flutter around the intrusion that reaches deeper than the tongue, finding places in Alicia that no one has touched before.
"Stoooop ~" The omega pleads as Clea adds a second finger and begins to experimentally thrust the digits in and out of her.
Summoning the strength to lift her head, Alicia frowns at the alpha kneeling at the end of the bed, who in turn is frowning at the place where her fingers move in and out of Alicia. Clea adds a third finger, stretching her sister wide as she does so, and the omega arches her back with a shudder.
Clea fingers Alicia lazily, moving her digits around inside of her, testing her walls to see how far she can stretch them. It comes to a point when enough time has passed that the youngest Dessendre has remembered her need to shout and scream for help and the frowns falls suddenly from her sister's face to be replaced by a hungry look.
Rising to her feet suddenly, Clea rudely slips her fingers out of Alicia and bends over to seize her sister's lips in a kiss. The redhead groans underneath her, her feeble cry for help being swallowed up as the alpha snakes her tongue into her mouth, and she whimpers at the heady taste of her own slick.
This is wrong. Sister's don't kiss each other - not on the mouth, and certainly not down there.
And as Alicia's thoughts spiral with a fresh bout of sobs, she realises too late that Clea's hands have wound themselves once more around her hips, and that something long and hard is poking at her inner thigh.
Her eyes bulge open at the feeling of the tip of her sister's cock settling into place at her entrance, and her scream is muffled against the alpha's lips. "No!"
Clea snaps her hips forward and takes Alicia to the hilt. The omega's back arches as her eyes roll up into her head with a long, low groan. Equal parts pain and pleasure flare from her pussy as the alpha's nine inch cock bottoms out inside of her. She can't focus on anything except it - on the way it speared through her maidenhead and forced her virgin canal to make room. On the way that her walls clench down around it.
"So. Tight." The alpha grunts, similarly overwhelmed. She swiftly regains herself and kisses Alicia sloppily so that she cannot shout for help. Lazily, and without pause, Clea begins to thrust in and out with her hips.
"Stop!" Alicia's scent again turns sour, and she desperately tries to push Clea off of her. The alpha catches her wrists and pins them over her head in one smooth movement, and continues to steal her voice with her kiss.
It hurts at first - the lazy thrusting, the lack of care - but Alicia's slickness and her previous orgasms help the alpha's cock glide into her. And glide into her it does, over and over again. The pain starts to lessen.
At the first stuttered moan that rips from the omega's lips before the youngest Dessendre can stop it, Clea abandons her forced lazy attentions and gives in wholly to the full force of her rut. She pulls her hips back until only the very tip of her cock is wedged inside of Alicia, and then slams them forward again with all of the strength that she has.
Alicia screams when the meaty shaft spears into her, and keeps screaming as it batters her walls again and again and again.
Clea shows her no mercy. Her fingers on her hips leave bruises while the hand that traps Alicia's wrists squeezes so tightly that is almost grinds the bones together. She sets a fast pace and ruts into Alicia like an alpha should - hard, dominating, punishing.
There is scarcely any room in the omega's core and so the alpha makes it. Her meaty shaft thrusts in and out and parts her walls and reaches the deepest parts of her.
While she thrusts, Clea kisses Alicia hard and bruises her lips. The headboard bangs against the wall in a rapid staccato, and in the other room Verso complains loudly as he rolls out of bed and gets ready to leave for the conservatory.
Alicia tries to scream. She needs him to hear her, her brother who thinks that Clea has simply mounted the mattress and not their baby sister.
Save me!
And then her attention is drawn by something far more worrying, by a bulb of flesh that crashes into Alicia's swollen pussy lips with every thrust of Clea's hips.
The alpha's knot.
"C-Clea -!" Alicia begs, barely able to get the words out around her sister's tongue. A warmth is starting to spread from her thighs down to her toes. She's so full. "I can't -! I can't take anymore! Please!"
If Clea is listening, she does not show it. The alpha loses her rhythm and begins to thrust erratically, snarling against the omega's lips. Her sharp mind is long gone now, completely subsumed by her rutting fever.
"Clea!" Alicia arches her back as the alpha bottoms out inside of her and stays there for a moment, grinding her knot forward hungrily, trying to make it fit. "It won't fit! It won't fit! Please -!"
Her sister appears to have come to the same conclusion as her rapid thrusts begin again. The headboard bangs against the wall, fast and loud, and Verso complains again as he heads out. Clea moans needily in her sister's ear as her shaft pulses inside of her.
Alicia draws in a breath to scream, and then Clea pistons her cock into her and steals it.
Moaning whorishly, Alicia struggles to speak. "Pull - Out - Pull - Out - Clea -!" The faint wave of an orgasm almost distracts her, making her toes curl - a precursor of something worse to come.
Then the youngest Dessendre panics as she remembers something else that she read in her books.
"I don't want pups!" Alicia begs. Shaking her head, she avoids the sting of Clea's lips when the alpha tries to kiss her. "I'm not ready! You have to pull out - we'll have pups!"
"I know." Clea purrs, black eyed and completely lost in her instincts. "Isn't it wonderful?"
"No!" Alicia moans and arches her back. She's so close. "What about -? What about Maman and Papa? They'll know what you did!"
"Good." Finally managing to catch her, Clea presses her forehead against her younger sister's and looks deep into her eyes as she thrusts desperately inside of her, gasping. "I want them to know everything. I want them to know that I stole their precious omega daughter's virgin cunt -" She snaps her hips forward brutishly, and Alicia wails. "I want them to know that you came for me. I want them to know that I filled you up -"
Snarling, Clea grits her teeth as her hips thrust as fast as they can into her little sister, balls slapping against her thighs and clenching with seed waiting for release.
"Fuck! Filled you to the brim!" The Paintress sneers. "Made your belly bulge with cum! Gave you a pup who looks just like you -"
"No!"
"Give in, Alicia."
And, as her sister stifles her cries with a harsh kiss, Alicia does.
Her back arches at the first waves of pleasure, and her body goes stiff. Clea cums in tandem, and inside of the youngest Dessendre her sister's shaft erupts with a flood of white seed, painting her walls and filling her up just as she promised. There is so much of it, and it quickly flows out of her without a knot to keep it inside.
Alicia screams into her sister's mouth as her hips canter forward of their own accord and ride her sister's cock until the orgasm peters out. Their parents awaken across the manor, and Papa comes to her room just down the hall. He sees that the curtains are still drawn within and decides to leave without opening the door, to let her rest -
The omega whimpers and goes limp at the end of her climax, as inside of her Clea releases one last burst of seed. Exhausted, the elder Dessendre collapses on top of her and quickly falls asleep. Alicia follows her, sobbing bitterly, stuffed full of her meaty cock and seed, her core red and throbbing.
Together, the sisters rest in the morning light as the rest of the family departs the manor.
"Hey," Verso stops his parents with a mischievous smile on the steps of their house, his embarrassment betrayed only by the red tips of his ears at the noises he heard. "I think Clea found an omega last night."
As one, his mother and father's eyebrows shoot up at the scandal.
"An omega?" Maman asks, frowning curiously.
"That's right." Verso smirks deviously. "And from what I heard, Clea fucked her good and proper."
"Verso!"
"It's alright, Aline. Such things are natural." Papa says, though not without shooting his son a warning look. "Gossiping about them, however, is not. Leave your sister alone. At least Alicia is still asleep..."
They head for Paris.