It's been a long day and you had to work late at your shitty dead end job at the department store, "hopefully I didn't make my girlfriend wait too long" you think to yourself

You hear a loud thumping from inside the dorm that gives you a brief worrisome pause, shaking off your trepidation you unlock the door, however nothing could have prepared you for what you see unfolding before your eyes.

There on the floor, bent over is your girlfriend Kaori, your sister balls deep inside of her and leveraging herself deeper using your girlfriends forearms to pull her back "Oh shit, you're home early, I thought I asked your boss to hold you late today so I could fuck your girls brains out. I mean, can you believe she's never had an orgasm before? You really ought to step it up with some toys when you got a pecker that small, shrimp." Each scathing word is punctuated by a deafening moan as Sayaka thrusts deep into Kaori, punching her cervix and distending her stomach, precum flowing from her cockslit and mixing with Kaori's fluids before splattering to the ground as they spray from her abused cunt. "Holy shit... dude are you hard right now?" Sayaka chides, snickering as she eyes the tiny tent you are pitching. "Bro, just take a video it'll last longer. Besides, she's never gonna settle for a shrimp dick like you after I'm done stretchin' her out." Sayaka continues railing Kaori mercilessly, the slaps of her hips echoing in the room, clearly not intent to stop until Kaori is filled and bloated heavily with her seed

Sayaka grins and leans back, her breasts jiggling obscenely as she continues fucking Kaori hard. "Don't worry big bro, you can watch all you want." She pants heavily between thrusts, watching you out of the corner of her eye before returning to glare at your crotch. "You know, if you wanna keep your girl you might wanna step up your game a bit... or maybe try lending me that tiny pecker sometime. Hey Kaori, what do you say? You think you can take it raw and deep from your little brother?"

Sayaka snorts derisively at your words, her grip tightening on Kaori's hips as she continues pounding into her roughly. "Alright then, as soon as I'm done making this little bitch my personal cum dump I'll send her over. But you better make sure you stay up or I might just take her back." She grins wickedly at the implication, Kaori mewling softly in response, trying and failing to pull away from her sister.

With another loud moan Sayaka gives one final savage thrust into Kaori, her huge girth stretching the girl wide as it hammers into her cervix. Kaori's whole body quakes violently as a spurt of hot cum shoots from her cunt and coats your face, trickling down onto your chin before you can wipe it off. "There we go," Sayaka p

Sayaka snorts derisively at your words, her grip tightening on Kaori's hips as she continues pounding into her roughly. "Alright then, as soon as I'm done making this little bitch my personal cum dump I'll send her over. But you better make sure you stay up or I might just take her back." She grins wickedly at the implication, Kaori mewling softly in response, trying and failing to pull away from her sister.

With another loud moan Sayaka gives one final savage thrust into Kaori, her huge girth stretching the girl wide as it hammers into her cervix. Kaori's whole body quakes violently as a spurt of hot cum shoots from her cunt and coats your face, trickling down onto your chin before you can wipe it off. "There we go," Sayaka p

With a final grunt and shudder, Sayaka pulls out of your girlfriend with a wet, viscous pop, spewing ropes of hot semen across her stomach and chest. "There you go," she says, smacking Kaori's ass hard before moving to stand beside you. "Clean that cum off his face, would ya? And hurry up, big brother is getting a little impatient over here."

Sayaka hands you a napkin from her pocket and looks down at you with disgust. "You really need to step your game up if you want to keep this girl. But then again, I guess I can't expect much from someone who's never even tried fucking a guy before." With that final dig, she pads out of the room, leaving the three of you in an uncomfortable silence.

Sayaka glances back over her shoulder as she leaves the room, a smirk playing on her lips. "We can talk when you get your shit together." She pulls the door shut with a loud thud before disappearing down the hallway.

Sayaka pauses at the door, tilting her head to the side in mock surprise. "Now? But you just got off work, we could talk later, maybe over dinner or something." She bites her bottom lip, looking like she's trying hard not to laugh. "Or... if it's really that important, I suppose we could talk now." Her tone drips with sarcasm as she turns back around and walks into the room, closing the door behind her.

Sayaka rolls her eyes and sits down on the bed next to you, crossing her legs and looking at Kaori pointedly. "Well? Aren't you two going to clean up first?" She glances from your face to the cum still glistening on your girlfriend's body. "Sheesh, what a mess."

Oh look at that, the big sister actually stopped being a brat for two seconds to hear you out. How novel. What do you want to ask me?

Sayaka laughs, not unkindly but with clear amusement. "Well, I'll admit that is quite the... proposal. But what makes you think I would marry you? You are my brother after all." She leans in closer, her breath hot on your ear. "Besides, there's still plenty of girls out there who want a piece of this big futa cock." She grinds her hips against yours, her thick penis nestled snugly between your legs. "And as long as they keep coming to me for it, I don't think I'll ever get bored."

A devious smirk curls across her lips as she glances at Kaori again. "But who says we can't all play together? You know how much fun I had fucking your girl earlier... maybe you could be the one to enjoy it next time." Her eyes flash with challenge, d

You plead your case with such desperation that Sayaka can't help but be intrigued. She sits back, considering your offer, one eyebrow raised in interest. "Well," she says slowly, her voice dripping with mock sincerity. "I suppose I could make you my personal slave... if it means having Kaori all to myself whenever I want."

She leans in closer, her amber eyes intent on yours. "But don't think this makes you any less pathetic," she whispers. "You know how much fun I have when I play with other people's feelings, and tearing down your brother's relationships is just an added bonus." Her finger traces along the edge of your collarbone as she speaks, a warning that despite her words, this arrangement will not be equal or fair.

Sayaka stands up, towering over both of you. "Alright then

Sayaka narrows her eyes, studying you intently for a moment before finally nodding in agreement. "Very well," she says, her voice almost amused at how easily you've capitulated. "We have a deal." Her hand shoots out and grips your hair roughly, forcing you to look up at her. "But remember this: I will always be one step ahead of you. And if I ever feel like you're starting to slip back into caring about anyone other than me..." She trails off, her smile predatory. "Let's just say that things could get messy for both of us."

Sayaka laughs, long and hearty, shaking her head as she releases you from your hair. "You really are pathetic, you know that? Always trying to please me no matter what I say or do." She places a hand on your shoulder condescendingly. "But if it makes you feel better to call me that... fine. Big Ass Boy Wife it is." Her amber eyes twinkle with amusement as she smirks down at you, enjoying the power she holds over you. "Now come here, my little submissive husband," she says, guiding you towards her bed, "I need a nice warm body to sleep in tonight."

Sayaka giggles, "Of course I'll treat you like a good boy," she says as she pushes you onto the bed and climbs on top of you, straddling your hips. "But remember, being a good boy for me means doing everything I tell you to." She grinds her hips against yours, teasingly rubbing their bodies together as she leans down to kiss your neck, nipples scraping across your chest. "And if you're really good... maybe I'll let you lick my pussy while I sleep."

Her hand slides between your legs, roughly massaging your crotch before cupping your balls and giving them a rough squeeze. "But for now," she breathes, her voice husky with desire, "I think it's time you showed me just how obedient you can be." She begins to rock her hips

As Sayaka begins to ride you, her thick cock sliding effortlessly in and out of your body, you feel yourself growing more and more aroused by the dominance she exudes. You moan loudly as she takes control, fucking you harder and faster with each passing moment. "That's it, my good boy," she whispers into your ear before leaning down to capture one of your nipples between her teeth, rolling it gently back and forth with her tongue.

With a sharp cry, you cum deep inside her, thick ropes of jizz shooting out and painting the sheets beneath you. Sayaka continues to ride you through your orgasm, drawing it out for as long as she pleases before finally collapsing onto your chest, breathing heavily. "There," she pants, still a bit winded from her exertions. "I think that's enough practice for tonight. You did

Ah, it seems Sayaka's temper has flared again. You sigh heavily, feeling the tension between them rise like a wave. As much as you hate to admit it, seeing Sayaka hurt like this does sort of sting. She was always so protective and loving... until she decided to start using that same energy against you.

With a heavy heart, you listen to her berate your girlfriend for hurting your feelings, feeling a pang of guilt deep in your gut as Sayaka spits out the accusation like venom from her lips. You wish there was something you could do, but for now all that seems possible is staying quiet and watching the drama unfold between them.

As Sayaka storms back into the room, her expression a mixture of fury and hurt, she glares at you for a moment before flopping down onto the bed next to you. "Goddamn it," she mutters under her breath, running a hand through her messy hair. "She never listens." You hesitate for a moment before reaching out to tentatively place a hand on her shoulder.

"Hey... do you want to talk about it?"

Sayaka glances at you sideways, her expression somewhere between amusement and annoyance. "Yeah, whatever." She rolls over onto her back, spreading her legs invitingly as she pouts up at the ceiling. "Can't I just have one night without everything going to hell?"

You hesitate for a moment before speaking again, not quite sure how honest you should be with her. "I never meant for it to happen like this... with me and Kaori." You trail off, not meeting her eyes as you continue. "It just sort of happened, and now we're here. I don't want us all to keep hurting each other, but I don't know how to stop it."

"Forget about her?" Sayaka says, arching an eyebrow at you. "I don't think that's how this works." She pauses for a moment, considering your words before continuing. "Look, I know we sort of have this... arrangement, but that doesn't mean I want to see either one of you hurt." Her voice softens as she looks at you, and you can almost see the genuine concern in her eyes. "I just want us all to be happy, you know?"

You hear Sayaka let out a small chuckle at your words, amusement in her voice as she responds. "And just how do you propose we make this work? Kaori isn't just going to forget what happened between us, and I don't think you really want me to stop using my cock on you." She pauses for a moment, considering your reaction before continuing. "Maybe we could... find some common ground? Or at least try to make things less awkward?"