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facefullofsadness · 10 months ago

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Could you do a giselle dom pervy step sister(female reader) smut where they don’t like each other at first but ig giselle found a way to turn that hatred into them fucking in secret while their parents are in the house

ANONNNN!!! YOUR MIND!!!! I've been thinking ab this ask for WEEKS and I finally have time to write about it omg obsessed

content - stepcest, blackmail, smut (pervy!giselle, cunnilingus, fingering, face sitting, squirt, voyeurism/public(?) sex)

wc - 2739

a/n - catching up slowly but surely on asks, I have no school this week so imma try my best!

you never really warmed up to giselle.

you never really WANTED to ever warm up to her. she was mean, annoying, obnoxious, and greedy. I mean, how fucking self-centered do you have to be to make your baby stepsis call you by another name because she "doesn't deserve to call me by my real name" as giselle had said. what infuriated you was how pretty she was too. someone who was such a bitch shouldn't get the benefit of being attractive, especially since aeri knew and definitely used it to her advantage. whether it be to the people around her like friends, classmates, teachers, or even your parents, she finessed them like no one's business.

but she could never trick or fool you. you were a challenge to her, and it pissed her off not getting what she wanted. giselle HATED your guts. you were smart, sweet, cute, and generous, traits she simply was not. she hated how your guys' parents eyes' would light up in excitement when you came to them with an academic achievement, looking at you with admiration and love, eyes that would look at aeri with annoyance and disappointment.

aeri's not stupid, she knows why she's disliked, but she doesn't really care. it only really started to affect her seeing YOU be soooo liked by them. she simply hated you because you weren't easy, and you hated her because she saw everyone as easy. though, however much it upset you, it upset her to a degree you couldn't even imagine. she had to win the invisible game, and she was going to get her way with you, one way or another. so she devised a plan, which was to put simply, blackmail.

one day when you were gone at school, she set up a secret camera in your room facing your bed. she laid back on the living room couch in content, watching you come home from school, shooting each other a painfully fake greeting, before you ascended upstairs to your room. during nightfall, you would of course, fulfill your physical desires while everyone was asleep in the house, unaware of the recording device from across the room. and in the morning when you left, your wicked stepsis would sneak back in to retrieve the footage, playing it back and giggling to herself, knowing this would ruin you.

giselle's sweet baby stepsis, a sexual deviant during the after hours, shoving a huge dildo into her pussy to force multiple orgasms from her own body.

aeri was giddy with joy, now owning what single-handedly would win her the upper hand. the day continued as normal, but as you were about to go to sleep, there was a knock at your door. you rolled your eyes when you opened it to find a smug aeri, her phone in her hand with a play button over a still image of you in your room. your eyes shift between her and her phone confused before she pushes you inside and shutting the door behind her.

"what the fuck is that aeri?"

she huffs and sits comfortably at the end of your bed, "first of all, it's giselle to you, don't forget. second, how 'bout I show you?"

playing the video on max volume, your muffled moaning erupting from the small screen, watching a video of yourself masturbating. your ears ring and your cheeks flush, pouncing onto the older girl and trying to tear the phone away from her. your older stepsis is far stronger than you and easily you get overpowered, her hands pinning your wrists together and against the bed, her legs straddling either side of your lap.

with one large hand gripping your wrists together and the other hand hovering the still playing video against your face, she smirks, "what? shy? you weren't so shy last night when you were shamelessly fucking yourself, now were you? hm, y/n-ie? my sweet little sister?"

you grit your teeth and shake your head back and forth to deny the accusation, as if it weren't true. her dark chuckle fills your ears and the room, joined with the loud squelching of your pussy coming from the video. you feel tears start to well in your eyes and you plead with her.

"unnie, please... delete that!"

she coos at you, "awww sweetie, you think I'm that easy? not without a price, I won't."

you continue to plea in a desperate voice, "unnie please! I'll do anything! just please, delete it, or don't share it! anything you want!"

her lips curl into a sinister smirk that you can see even in the dark. you feel your heart drop to your stomach at the thought of what she must've suddenly imagined, immediately regretting your choice of words. before you could even consider opening your mouth to take back what you said, aeri drops the phone and covers your mouth.

"anything huh? will you behave for unnie and do anything I want?"

you debate shaking your head no, but when you hear a particularly loud moan come from the video playing next to your ear, you nod your head yes.

"good girl, you may be stubborn but you're not stupid. a little bit dumb for your choice of words though," she hums above you and trails the hand over your mouth downwards, dragging her long slim fingers across your sensitive body, jerking with every inch of contact she makes.

you whine as her fingers circle your hardening nipples and pinch them between her fingertips, giggling at how your body reacts to her touch.

"sensitive little baby, aren't you y/n-ie? fuck you're so cute, you shouldn't be so fucking cute."

aeri hated how much she was enjoying this almost as much as you did. she hated how cute her little sis was, writhing under her, eyes welling with tears in fear, body reacting to every subtle brush, thighs rubbing themselves together to suppress the ache at her core. and you hated it too, you hated that your older sister made you feel so fucking good, how her touch ignited flames in your stomach, how you panted into the air the more intimate her touch became, how you anticipated and needed more when you realized how disgusting this all was.

you both hated it, but you both couldn't get enough.

looking up into giselle's eyes at the same time she looked into yours, locking onto one another and gazing into lustfilled stares, the tension filling the air. the hatred boiled over and morphed into a new emotion, desire. a compromise emerged, and mentally, you both knew what it was. it all felt too good to want to stop, so you gave in.

leaning up and smashing your lips against aeri's, her immediately pushing back into you, pressing you down into your mattress. sloppy wet kisses loud and echoing through the room, both your moaning filling your ears and drowning out any possibility for moral dilemmas to pierce your mind. the hand pinning your wrists down, traveling up to hold your hand, interlacing her fingers through one and letting the other one go.

you let your free hand shoot into her hair, pulling her closer into you and shoving your tongue into her mouth, eliciting a whine to escape giselle's throat, accepting the intrusion. her other hand finds your thigh and brings it up, wrapping your leg around her waist and grinding her hips against your clothed core, making you both groan out into each other's mouths.

"fuck, you're good. why are you good?" she moans into your mouth.

"I'm not- a fucking- amateur." you pant out between kisses.

"yeah? then tell me, has anyone else made you feel this good?"

she questions, almost as a challenge, and you're scared to answer knowing it's just another piece of blackmail to hang over your head. you both already know the truth, obvious by your hips rutting back against her, your sweat dripping down your forehead, neck, and chest, your core aching with need, and your eyes blown to oblivion.

"fuck you," you answer instead.

she chuckles lowly again, the tone and vibration in your mouth when she does it making your pussy throb between your legs.

"not before I fuck you."

flipping you over and onto your hands and knees, tearing your shorts and panties off, throwing them to the ground. she wastes no time shoving your legs apart and licking along your leaking slit, making you moan out and bury your head into your pillows.

"you're so fucking sick, do you know that? being so wet and horny for your unnie like this, you disgusting little whore."

giselle says as if she's not soaked in her own clothes, nipples hard and hole clenching around air. she feels so powerful, so in control, and it feels so good to have you whining under her. sticking her tongue out and getting to work immediately, dragging her wet muscle greedily and swiftly against your pussy, drinking in all of your slick. muffling your moans into your pillows and clawing at your sheets hard enough to rip them.

her strong grip on both of your legs forcing you to keep them apart, slapping your ass every so often and making you scream out into the pillow. her tongue moves around your core so fucking good, alternating between sucking and flicking at your clit to thrusting and licking inside of your cunt, the sounds unbearably sinful and delightful to especially aeri's ears. she's drunk, on the taste and feel of your pussy, the way your body reacts, and the muffled cries being torn from your mouth.

she closes her eyes and relishes in your delicious juice swishing around her mouth, moaning into your pussy at how fucking good it feels to have you like this. her core aches and throbs so painfully, she clenches her thighs to hold it in. she lands another slap on your ass before shoving three fingers into you, already starting with an unforgivable pace, curling them and finding that spot in you easily. you scream and claw at the sheets, almost assuredly knowing your pillow wasn't muffling your cries anymore, not like either of you cared. aeri was going insane and felt herself becoming more and more addicted to you. addicted to ruining you, addicted to having power over you, addicted to owning you.

with the arch of your back and body stilling, you gush cum all over your stepsister's face, thighs trembling and chest heaving, moans slipping out of your mouth like a waterfall, your pussy mimicking the motions of one too. giselle drank all of it, everything, licking all over your leaking cunt and wiping her face of it too, sucking her fingers dry to not leave a single drop wasted.

she didn't even let you rest as she flipped you over onto your back, quickly stripping of her pajamas and lingerie, before climbing up to your face, her thighs resting on both sides of your head.

"use your tongue for something useful, pervy slut."

pfft, hypocrite.

she gives you no time to respond or think before shoving her fat pussy into your mouth which you immediately start to drag your tongue all over, coating it in her slick. your hands grip her juicy thighs and you dig your nails into them, her wincing above you and gripping the headboard with one hand, the other hand in her mouth to muffle her sounds.

you never rip your eyes away from her face for even a second, obsessed with how much sheer pleasure rests on giselle's face, her mouth biting down on her hand, her eyebrows furrowed in concentration, and eyes clamped shut. your nose hits her clit repeatedly with your tongue buried deep inside her cunt, flicking it to stimulate inside her tight walls. she tastes so fucking divine, cum directly entering your mouth and your spit drooling out the sides of your lips.

her hips quicken and she fully rests her weight on your face which makes you delighted, drinking her up and pulling her in, suffocating between her thighs. not that it mattered, you loved it. you couldn't breathe but you pushed through, thrusting your tongue in her and maneuvering her hips as her clit hit the tip of your nose.

"drink my squirt you little bitch, take it! don't waste a drop! fuck!"

she demands you as she cums in your mouth, her pussy squirting onto your tongue. her thighs shake in your hands and you close your eyes to avoid squirt getting in them. you feel like your drowning in the sheer amount of liquid coming from aeri's pussy, but you obey your sister, drinking everything that slides down your throat. she finally calms down and you tap on her thighs in a panic, literally not able to breathe. she laughs above you and stays there, watching color drain from your face before she lifts herself up, watching you cough and gasp for air.

"sick fuck," she says before smashing her lips against yours' and digging her tongue into your mouth again.

suddenly, she pulls away and gets dressed, picking up her phone and waving at you with that infuriating smirk on her face as she opens the door and leaves, "see you again, baby sis!"

and from then on that's when it started, fucking your step sister in secret. at first it was only at night, every night since the first time. then it progressed to whenever your parents were out of the house, fucking on the couch in the living room, on the kitchen island, in the shower, in each other's rooms. at some point, she started to get more flirty with you, her touches lingering for too long when she held your hips in the kitchen to move past you or sliding her hands up your shirt when she'd greet you with a hug when you came home from school, whispering an "I missed you" into your ear, her breath against it making a shiver go down your spine, which always drove you insane.

at some point though, giselle couldn't give less of a fuck if your parents were home or not, she just wanted to fuck you. your family would be having a movie night in the living room and you'd go to the kitchen to get more snacks, the older girl following you to "help." then she'd pin you to the kitchen counter and slip her fingers down your underwear, dipping them into your already wet pussy.

"really y/n-ie? you're fucking wet? were you eye fucking me all night that you couldn't help yourself get horny? let me help you with that baby."

she would whisper breathily into your ear before fingering you right then and there, you clutching the popcorn bag in your fingers and biting down on your lip, trying so hard not to moan and get caught, thankful the movie was loud enough.

or during a dinner party WITH YOUR RELATIVES, she would "accidentally" drop a spoon on the ground and go to retrieve it, only to separate your thighs and trail a long tortuous lick across your exposed pussy, aeri having demanded you to wear nothing under. you're suddenly gripping your utensils and coughing on the food in your mouth, acting like it went down your throat wrong. your sister climbing back up from under the table with a lost spoon and a smile.

and of course, she fingered you under the dining table that night too, your face red and physically incapable of eating for about twenty minutes, clutching her forearm as you came around her fingers in front of everyone. you had bit down on your lip so hard, blood had started dripping down your chin and onto your dress, excusing yourself to clean up. panting out of breath in your room and ripping the dress off of you, your sister following behind you and pinning you to your bed with a smirk.

"that was impressive baby, you were able to keep in all those delicious moans huh? well, don't you dare fucking keep them in now, they can't hear you from here, and we're not even close to finished."

smashing her lips against your blood stained ones, the taste of metal filling her mouth.

and while you're not sure if you're starting to like your sister or not, you definitely start getting used to it (maybe obsessed).

a/n - the other night when I was looking at this ask, I suddenly had the urge to write a "rich girl aeri x reader fic where they both fucking despise each other and are just rich bitches until one night they both break from all the sexual tension and fuck in the back of aeri's car" fic... I'll get to work-

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