all american whore (n.r)
pairing: step brother!riki x step sister!reader
preview: your dad has just married riki's mom. but, you're not blood related so you should be fine to hook up, right?
tags/warnings: fem reader, handjob in the back of a car, oral (69 on the edge of a pool....), fingering, unprotected penetration (BOOOO), hickeys, breast slapping, pet names (angel, slut, cock whore), 4th of july celebration (and by celebration i mean orgasms for everyone), creampie
trigger warnings: STEPCEST!!!, like two mentions of reader having a dead mom
wc: 3.0k
song recs for this fic: american horror show by snow wife, all-american bitch by olivia rodrigo
a/n: i was so invested in writing this for like 4 days good lord
“you could at least try and be a little excited, y/n. sure, you’re meeting my new wife and her son today, but it’s also the 4th of july. it’s a celebration,” your dad says to you while driving. “whoopty doo,” you say as sarcastically as possible. you can feel him glaring at you without even looking over at him. “i know you miss your mother, but it’s been over a decade, i’m moving on.”
you lean your head against the window, the air hanging heavy between you and your dad. “i’ll be nice to them but i can’t promise i’ll like them,” you say, turning to see your dad crack a small smile. “i think you will like them, pumpkin. just trust me,” you nod as he speaks.
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as your dad parks, nerves run through you. it’s finally hitting you that you’re meeting these people that your father intends to keep in your life forever. he walks up behind you and squeezes your shoulders. “you ready, kiddo?” he asks and you give him the most unconvincing nod ever.
you walk up to the front door and knock loudly. “you’re here!” a woman cries out as she opens the door. you assume this is your dad’s wife. “hello honey, this is y/n,” your dad introduces you and you give an awkward wave. “come in, come in. riki is just upstairs playing his video games,” she ushers you in and shuts the front door behind her. “you guys can just head out to the backyard, that’s where everyone else is,” she walks over to the base of the stairs and angles her head upwards. “NISHIMURA RIKI GET DOWN HERE,” she yells.
you walk out to the large deck in the backyard with your dad and greet lots of people you’ve never met. you notice lots of things in the very large backyard. in-ground pool, hot tub, etc. your step-mom is rich. you settle yourself in a law chair by the pool with a spiked iced tea in hand. you’re soaking up the sun when you feel a presence next to you. you open your eyes and see a man standing there. “my mom told me i had to introduce myself to you. i’m riki,” he scratches the back of his neck and turns to yell to his mom on the deck. “happy now?” his mother shrugs. he walks away from you, clearly unhappy with your presence.
as the afternoon goes on, the family gathering becomes more lively. you’re sitting on the edge of the pool with your legs in the water when riki comes to talk to you again. he slips his shoes off and plops down next to you. “here because your mom told you to?” you raise your eyebrow at him and he shakes his head. “no, i came to apologize. i’m sure you’re in the same boat as me with our parents' marriage,” he swings his legs, creating small waves in the water. you sigh, your shoulders slumping.
“you wanna go up to my room? it’s quieter and we could watch tv or something,” riki nods towards his house and you give him a small smile before getting your legs out of the pool. you grab your sandals and follow him close behind. “y/n and i are gonna hang out in my room for a bit,” riki tells his mom and she gives him a warm smile. “have fun, kids,” she says. she shoots your dad an excited look as you two walk into the house.
as you settle into riki's bed, you feel as though this is a very intimate space to be in with your step-brother. he puts on some brainrot show as background noise and sparks up a conversation with you. despite being invested in your conversation, you can tell there’s something else on his mind. the way his eyes dart between your own eyes and your lips brings butterflies to your stomach.
riki snakes his hand onto your bare thigh, your shorts having ridden up from adjusting to sit comfortably in his bed. he strokes your skin with his thumb like it’s second nature. goosebumps rise in the wake of the soft movements from his thumb. you look at him with doll-like eyes and he can’t seem to get enough of your appearance.
slowly, his hand snakes higher and higher before his fingers are teasing the stitching of your underwear. you can tell he wants to shove his hand in there and play with your wet heat. you know his fingers can feel how wet you’re getting. he shifts his arm a little bit so he can reach his pointer finger out to brush over your clothed clit. slowly, it gets harder for you to hold the conversation.
riki leans over to whisper in your ear, despite the two of you being the only people in the room. “can i? please let me make you feel good” is all he says to you and you honestly can’t get your head to nod fast enough. you’re not blood related so you should be fine to hook up, right? at your consent, he slips his fingers under the fabric of your panties and plays with your clit. small moans and whimpers escape your lips when he touches you. it feels amazing. his soft fingers on your skin lights your nerves on fire.
riki scooches closer to you so he can press kisses onto your jawline and neck. you tilt your head back on instinct, giving more access to the expanse of your throat. he slides his middle and pointer fingers into your wet hole, pumping them in and out slowly. your muscles clamp around his digits, desperate for more pleasure. “riki, oh my god,” you breathe out, your hand shooting down to hold his wrist while he fucks you. he holds your face with his other hand, making sure you’re looking at him while he fingers you.
your high creeps up on you as the tips of his fingers jab the gummy spot inside you. you arch your back as your walls throb around his fingers. “give it to me, y/n. i know you’re fucking close. cum for me,” he whispers in your ear again. you dig your nails into the skin of his wrist as you cum around his fingers. riki lets out a sinister laugh before pulling his fingers out of you. he brings his wet fingers to his mouth and licks your release off of them. as you’re about to say something to him, you hear your dad’s voice. “y/n! it’s time to go home!”
____________________________________
for the next 3 days, all you can think about is riki. was what you did wrong or immoral? it can’t be. you’re not blood siblings. the only thing bonding you is your parents’ marriage. unfortunately for you, you can’t help but want more.
today must be your lucky day because your dad has some amazing news for you. “we’re going on a little shopping trip with riki and my wife today. do you wanna go there in separate cars or take one car?” your dad asks, leaning on your doorframe. “we can take one car, it’s fine with me. i’ll sit in the back with riki.”
your dad gives you a warm grin, only happy that you’re getting along with your step-brother. he pulls out his phone to text his wife about your transportation decision. not even 10 minutes later, an suv pulls into your driveway. you rush to put your shoes on before climbing into the large backseat with riki. he pats the seat right next to him, despite the whole rest of the backseat being empty. happily, you oblige. the car is chilly and riki has a blanket over his lap.
it’s about a two hour drive to the biggest outlet mall near you. so you settle next to riki, watching a movie on the laptop he’d brought with him. about 20 minutes into the drive, you notice riki shifting around uncomfortably. you take a single glance down and you know exactly what’s wrong. he’s hard. so unbelievably hard. you can see it through the blanket.
“do you want my help?” you ask in a hushed voice. riki catches his bottom lip between his teeth as he nods. luckily, he decided to wear basketball shorts, so you have easy access. you pull the waistband of his shorts and underwear down just enough to get his cock out. you wrap your hand around it under the blanket and pump him slowly. he digs his teeth into his lip to suppress any sounds coming out. you run your thumb over the pink, dripping tip and he lets out a sigh. “you okay back there, hon?” his mom asks, seeming concerned. just as he’s about to open his mouth, you start pumping faster. “y-yeah, i’m so fine,” riki responds. his mom seems to accept this answer as she goes back to looking at her phone.
“the fuck is wrong with you?” he whispers aggressively. you give him a mischievous smile as your hand continues to work on him. you stroke him with firm, mildly swift motions. his hips buck to meet your hand’s movements and you can’t help but smile at his desperation. riki slides his arm around your waist, bringing you closer to him. he digs his fingers into the skin of your hip as his orgasm approaches. “right there, angel, fuck,” he squeezes his eyes shut as his cums, his hips stuttering. white ropes of cum paint your hand and forearm. as you bring your hand to your mouth to lick it clean, he shoves his cock back into his shorts.
____________________________________
after your shopping trip, your parents drop you off at riki’s house. you walk into his empty house and plop down onto the couch. riki stands in the doorway of the living room, watching you. “you wanna swim?” he asks, nodding his head toward the back door. “i don’t have a bathing suit,” you reply, smirking at him. “swim in your underwear.” you shrug, not really minding the idea.
you rise from the couch, walking past riki towards the back door of his house. as you walk, you drop items of your clothes on the floor. first you drop your shirt, exposing your back and your black bra. next, your shorts. they left almost nothing to the imagination anyway. your black panties hug your hips and ass in a way that almost sends your step-brother into a frenzy. you peel your socks off last, throwing them into a corner. finally, you reach the pool. you dive in head first, drenching yourself head to toe. “you coming?” you call out to riki, who’s been a statue since you started stripping.
you can barely see him from the pool but you can tell he took his slides off and threw his shirt somewhere in the room. he comes darting out the door, diving into the pool the same way you did. when he comes back up, he flips his hair out of his face. you’re holding onto the edge of the pool and watch his movements. he swims over to you, halting in front of you. there’s a moment of silence between you before he grabs you by the back of the head and crashes your lips together.
riki kisses you like it might kill him if he doesn’t. the kiss is sloppy and full of saliva. he kisses you like he’s been poisoned and your lips are the only antidote. your hands travel to his exposed chest, digging your nails into his chest. he groans against your mouth and the sound goes straight to your core. you wrap your legs around his waist underwater and he kisses you harder.
“i wanna fuck you, but not here. not now. let me taste you,” he whispers against your lips as if someone will hear you. you nod, but suddenly a better idea comes to your mind. “get out of the pool and lay on your back,” you instruct, also pulling yourself out of the pool. riki follows suit, doing what you told him to. you stand by his head and shimmy your wet panties off. you throw them onto the lawn before turning back to riki.
you put both feet beside riki’s head and lower yourself slowly, sitting on his face. his tongue almost immediately darts out to taste you and you fall forward, catching yourself with your hands on his hips. he wraps his arms around your thighs, pulling your core further onto his face. with trembling hands, you push his shorts down his thighs. he lifts his hips to help you in sliding them off him. you lay your torso down and take his cock into your hands. you stroke it a couple times before spitting on the tip.
you take the first half of his cock into your mouth, already choking around it. he moans against your pussy, his hips bucking into your face. he wraps his lips around your clit, sucking on it lightly. your knees fight to squeeze around his head but you don’t let them. you stroke the portion of his cock that you can’t fit in your mouth, trying to work an orgasm out of him. you bob your head up and down rhythmically. riki eases two fingers into you and they follow the same rhythm as your head.
your orgasm creeps up on you faster than you would’ve liked it to, but you can tell he’s close too. you pull your mouth off of him to let out a high-pitched squeal when he curls his fingers inside you. “ah, fuck, i’m gonna cum,” you exclaim, clenching around his digits that are abusing your hole. “me too, angel,” riki replies. his voice is so husky and strained that it almost sends you over the edge.
you manage to pump him a few more times before toppling over the edge. you shake above him, your thighs clamping down on his head. the noises you make as you cum send him into his orgasm. he releases onto your face and neck, causing you to flinch a little. you roll off of him, laying naked from the waist down on the warm concrete. when you sit up, you hear a car roll into the driveway. riki shoots up and give you an ‘oh shit’ look. you both bolt into the house, grab all your clothes and rush up the stairs. he barely closes his door before your parents open the front door. you can hear them talking and laughing about something but you’re too focused on how fast your heart is beating.
you collapse onto his floor, laughing about how close you were to getting caught. riki listens for the movement of your parents, trying to find out what they’re doing. relief washes over him when he hears them leave again. he turns to you to find that you’re moving to put your clothes on. “don’t you fucking dare.” he walks over to you and hooks his arms under yours, lifting you off the floor and onto his bed. you rest your body weight on your elbows and watch as he admires your body.
riki runs his hands up your thighs and spreads your legs for him. he pulls you so you’re almost hanging off the edge of his bed. “please, angel. let me fuck you. i need to know how that pretty fucking pussy feels,” it almost sounds like he’s begging you. your core throbs as he speaks. “please,” is all you can muster as a response. riki grabs the base of his cock, lining up with your wet hole. “god, you’re gonna be my fucking slut. right, angel? a whore for my, ngh, cock. gonna ruin you for everyone else. you’re only ever gonna want me” he shoves himself into the hilt before pausing.
your walls pulse around him, trying to adjust to his size. before you’re fully adjusted, he starts to thrust. his cock abuses your hole and it feels so fucking good. you wrap your legs around his waist as he uses you. “god, it’s like you were made for me. such a good cock whore. you’re taking me so well.” roughly, he pulls your bra down to expose your breasts. he slaps both of your breasts, leaving bright red marks. you cry out in pleasure, your back arching. “such a whore for your step-brother. what would your father say?” he teases.
he leans down and connects his mouth with the plush skin of your breast. he sucks on the skin, leaving a dark purple mark. he continues the same motions a couple more times, leaving your chest riddled in his love bites. “you’re fucking mine. you hear me?” he says, grabbing your chin and forcing you to look at him. “say it. say it and i’ll make my sweet angel cum.” the idea of finally cumming makes your eyes roll into the back of your head.
“fffuck riki, i’m yours. i’m all fucking yours,” you cry out. your orgasm is right there. “good fucking girl. so obedient,” he slaps your chest again, leaving a bright handprint. “where do you want me to cum?” riki asks as his thrusts speed up and become sloppy. “inside, inside, god please inside of me,” you beg, your pussy clamping down on him. he chuckles at your desperation. he connects his pointer finger with your clit, rubbing it in circles. “cum. cum for me right now, slut.”
the combination of his words, his motions on your clit and his cock abusing your wet cunt sends you crashing over the edge. you cry out loudly, a string of curses erupting from you. he quickly follows suit, spilling his seed into your weeping hole. you both rest for a few moments, feeling his cum seep out around his cock. you wipe sweat off your forehead before looking at him.
“we can never tell our parents.”
© lomlhwa 2024
I looked for this for so long, my lost gem💔















