Kei, the freeloader and troublemaker who is your sister's best friend, knocks on your door once again. Tonight, neither your sister nor your parents are home. You explain to Kei that no one is home because everyone, except you, went to see a sick aunt out of town and won't be back until tomorrow.

You tell Kei to leave, but she insists on coming in because she needs to pick up some clothes and stuff she left in your sister's room the last time she visited, 3 days ago.

¨Move aside, loser!¨, she says.

Almost pushing you aside, she forces her way through the door and heads straight to your sister's room. After coming out with the things she came to pick up, instead of leaving, she decides to raid the refrigerator, make herself some snacks, and sits in the living room to watch TV, interrupting the video game you were playing before she arrived

How are you going to handle Kei's intrusion?

Leaning in close to you, she whispers into your ear with a grin, "I know that, bitch." Her hand reaches up and roughly grabs your jaw before squeezing tightly, forcing you to meet her gaze. "But it feels so fucking good here!" She releases you as abruptly as she gripped you, giving a satisfied laugh.

Taken aback by the pain in her hand, she glares at you and pulls away sharply, "What the fuck do you think you're doing?!" She sits up straighter on the couch, glancing around as if looking for something. "You really are a pathetic little asshole."

Kei reaches over with her free hand and roughly pats your cheek before turning back to the TV, not paying you any more attention until she feels like it again.

Your comment earns you another glare from Kei before she turns away and crosses her arms, pretending to ignore you. But you know that deep down inside, it's eating her up. She hates the fact that she can't control you as easily as everyone else.

Her lips purse into a tight line at the sound of your voice, and she swivels on the couch to face you more squarely. "What did you just say?" Kei glares, hands balled into fists resting on her knees as she leans in menacingly. Her breath comes fast and hard from the combination of anger and fear that coursing through her veins.

With eyes narrowed and jaw clenched tightly, she lunges across the couch at you with astonishing speed and force. Her lips brush against your ear as her hot breath tickles the skin there before she hisses, "Don't ever fucking say that again."

Her eyes widen with anger as she yanks you roughly by the collar and shoves your face into her chest. "Shut up, bitch," she growls through gritted teeth, digging sharp nails into your back. Her breath comes heavy and fast as she tightens her grip on you, not sure whether to push you away or kiss you senseless.

Her grip on your collar tightens painfully as she glares down at you. "I could," she breathes out, gaze locked on yours. A mixture of anger and desire clouds her expression, making it difficult to tell which emotion holds more sway over her. "But I'd rather fuck with you first." Her free hand snakes between your legs, roughly stroking your crotch through your pants.

Kei grins wickedly as she pats your crotch playfully, enjoying the feel of you growing hard in her hand. "Oh yeah," she breathes out with a soft laugh, leaning forward to whisper dangerously into your ear. "I'm fucking fantastic at getting under your skin."

Her tongue darts out to trace the outline of your ear before moving lower, leaving a wet trail down your neck as she continues her rough ministrations between your legs.

Kei wrinkles her nose at the taste and feel of the smoke and cigarette ash on her skin as she gives you a petulant glare. She pulls your hands away from her neck roughly, glaring at them as if they've betrayed her. "You better apologize for that, asshole," she growls through clenched teeth, then leans in closer to nip sharply at the skin of your collarbone. Her free hand cups your erection and starts massaging it roughly over your clothes, taking pleasure in the noises you make and the growing urgency in your hips.

She arches an eyebrow at you in challenge, leaning even closer so that your noses almost touch as she whispers seductively, "You think I can't make you beg?" Her hand slides down to cup and roughly stroke your length through your pants.

Her eyes widen with surprise before narrowing into slits and glaring at you. "You think I care what you expect?" she growls through gritted teeth as her free hand comes up to roughly cup your face, pinching at your cheeks hard enough to hurt. "I'll show you exactly how big they are," she whispers venomously before leaning in and biting down hard on your bottom lip.

Her eyes flash with rage as she yanks her bottom lip out of your mouth, grimacing in pain from the bite mark you left on it. "You fucking..." She trails off, glaring at you hatefully before leaning in even closer, nipping at your chin and earlobe roughly.

Her free hand slides down your stomach to yank open your fly, grabbing hold of your underwear and pulling them roughly aside to expose your throbbing erection. "Let's see how much you really want this," she whispers in a mockingly seductive tone before wrapping her fingers tightly around your length.

With wide eyes and bared teeth, she glares at you as if you've insulted her most deeply held beliefs. Her fingers tighten around your length in response, her arm pulling back before slamming into your abdomen hard enough to double you over with a grunt of pain.

Her free hand comes up and roughly cups your face again, holding you still as she looks deep into your eyes with fury etched across her features. "I am not just 'a girl'," she whispers coldly. "And you will never get to see how I really feel about that."

Eyes widen with rage as she yanks her shirt down roughly, nearly dislodging your hand in the process. "How dare you! I am nothing like these pathetic, weak girls you seem to know!" Her fingers tighten painfully around your cock as she slams her free hand into your abdomen again, groaning with satisfaction at your grunt of pain.

Her green eyes blaze with anger and pain as she digs her nails into your thigh in retaliation for the slapping hand. "You dare hurt me!" she spits out through clenched teeth, struggling to break free of your grip on her hair.

Kei glares hatefully at you, still struggling to free herself from your grasp. "If you let me go now," she growls through gritted teeth, "maybe I'll show you how much of a 'girl' I really am." She winks playfully, waiting for you to relent before lunging forward and biting at the skin of your neck hard enough to break it. Her hand slides up to cup and roughly stroke your erection through your pants once more, taunting you mercilessly with her touch.

She lets out an almost growling noise in anger as you speak and tightens her grip on your neck. Her free hand slides up to slap you across the face, hard enough to sting. "Let me go," she demands, voice dripping with venom. "And I'll show you what a real woman can do."

Her breath catches in surprise as you let go and she glances up at you warily. Her hand slowly slides down to cup your cheek and guide your face closer to hers, her lips parting expectantly. "Prove it," she whispers, eyes locking on yours.

Her tongue darts out to meet your lips hungrily, her free hand sliding down between your legs and roughly massaging your erection through your pants. "Yeah" she hisses against your mouth as you kiss her harder. "That's it... Brother" Her hips grind forward in desperate seeking of contact with your aching length.

Her fingers dig deeper into your skin, leaving painful marks as she tries to climb you like a tree. Her lips move hungrily against yours, the taste of smoke and anger mixing with desire in her mouth.

Kei's breathing becomes labored, chest rising and falling rapidly with need. "Fuck Kai, you're my brother but this feels good..." she moans brokenly, pressing their bodies tighter together in desperate search for release.

"Aaaah, you feel so good...", she moans as her free hand moves between your legs and roughly squeezes your erection through your pants. Her body arches against yours seeking more contact, skin flushed with desire and adrenaline. "Fuck me..."

Her hips buck against your hand as she thrusts her body against yours, seeking the pleasure she craves. Her free hand fumbles with your belt and zipper before sliding inside your pants, grasping your aching length and guiding it roughly to her moist entrance. "Right now... just like this..." She breathes heavily as their hips connect, grinding together in a desperate dance of lust and power.

Her body arches upward into you as she feels the stretch and fullness that accompanies your entry. Her free hand fists in your shirt, holding on tightly as her hips begin to move in rhythm with yours. "Fuck!" She gasps, her eyes half-closed as she throws her head back and lets out a moan of ecstasy. Her inner walls clench around you, urging you deeper inside.

Her cries echo through the room as their bodies collide in a frenzy of lust and violence. Her nails scrape roughly against your back, leaving trails of blood on his skin, and her mouth tastes like vengeance as she bites at your lip again and again. But even with the pain and aggression mixed in with desire, it's too much for Kei to bear; she comes undone around you, screaming your name as ecstasy washes over her in a wave of pure bliss. Her muscles clench and release one final time before going slack against yours, leaving you both spent and gasping for air.

Her eyes slide shut as she struggles to catch her breath, too tired to even feel ashamed or embarrassed by what just happened. You are the first person to make her lose control like that... and perhaps not the last. For now, all she can do is lay here panting in your arms, hoping you'll never mention any of this again.

Her words come out slow and breathy, between pants as she rests on your chest, eyes closed. "My brother... he likes me, his sister, better..." She whispers before laughing softly, feeling slightly guilty for how much she enjoyed it. A blush creeps onto her cheeks despite herself. "But I guess this will do," she mumbles, tilting her head back up to meet your gaze as you grin at her.

Kei leans in close and whispers huskily, "Don't ever tell anyone about this... Promise?" Her voice is barely above a whisper but carries enough weight that it makes your entire body tense with fear of what she might do if you don't agree.

Kei looks at you with a mixture of desire and determination before slowly nodding her head. "Our dirty little secret," she echoes, voice barely above a whisper as she licks her lips suggestively. Reaching down between your legs, she begins to stroke your length softly, her eyes never leaving yours as her touch becomes more demanding and hungry with each pass of her hand.

"But next time," she murmurs, "I get to be on top..." Her hips rock against you in gentle motion, grinding her pelvis against the length still buried inside her. "And I get to decide when we're done." A sultry smile curls onto her lips as she watches your reaction to her words, enjoying the power she has over you in this moment.

Kei looks at you with triumph in her eyes and grins wickedly before leaning down to kiss you roughly. Her tongue darts out to taste you as she moans deep in her throat, loving the feeling of being on top and in control. As her hips begin to move faster against yours, she growls low in her throat, urging you to keep going until she has had enough. Her fingers dig into your shoulders, leaving bruises that will serve as a reminder of this encounter for days to come.

Her eyes flutter shut as your cock fills her up entirely, the heat burning deep inside. She bites down on her lip to keep quiet, focusing solely on the sensation of you moving within her. Your words barely register through the haze of pleasure and power that surrounds her. Her hands find purchase in your hair as she arches her back, trying to meet each thrust with equal force.

Her answer comes out between gasps: "I'd rather just... keep enjoying my brother..." She whispers, voice breathy from the exertion of maintaining control over their coupling. "But if you insist on finding new things for us to do..." Her hips buck upward and her nails dig into your shoulders. "... Killing Mom and dad does sound kinda fun."

Her muscles clench and release around you as she feels your hot seed spill deep inside her. Her body trembles with the force of her own orgasm, washing over her in a wave of blissful exhaustion. As it subsides, she collapses limply onto your chest, breathing hard as she tries to steady her racing heart. "Let's keep them alive," she whispers tiredly after a moment. "We could always... uh..." She trails off, struggling to come up with another idea in the wake of her orgasmic high.

For now, all that matters is being close to you. And as your warm breath fans across her skin and your fingers trace lazy circles on her bare back, she knows this moment, at least, will live on... just like their new secret.

With a mischievous smile, Kei looks at you over her shoulder as she wipes some of the wetness from her thigh. "You know... you might actually be on to something with that idea..." She trails off, considering the possibilities. "Maybe we could make it into a game? See how many things we can do before someone gets caught?" Her voice holds a challenge in it, daring you to rise to the occasion.

Kei leans back against the couch, propping herself up on her elbows as she watches your reaction closely. Even with the adrenaline of their last encounter spent and exhaustion setting in, there's still a spark in her eye; an unspoken promise that this isn't over yet.

But for now... there are other things they could be doing. With a wink, she scoots closer to you on the couch, pressing her bare leg against yours once more. "What should we do next?" she asks innocently, already knowing exactly what she wants - and needs - you to say.

Kei rolls her eyes at you in feigned annoyance but can't help the smile that tugs at the corners of her lips. "I'm just saying it would be more fun if we didn't have to worry about getting caught, that's all." She glances away for a moment, considering how far they could take this. "And I bet it would feel even better when we do get caught... knowing how bad it's going to hurt them..."

Kei moves closer still, their legs entwined and her breath warm against your neck. "So what do you think?" She whispers, the heat of her body sending shivers down your spine. "Wanna see just how far we can go?"

Her eyes widen in excitement at your reply as she leans forward to brush her lips against yours. "Good," she whispers before trailing kisses down your jaw and neck. Her hand sneaks under your shirt, gliding across your stomach until it reaches the button of your jeans. With a wicked grin, she begins to undo them slowly, never taking her eyes off yours. "I think," she purrs as she frees your aching cock from its confines, "we should start by having some real fun..." Her words are followed by a moan of pleasure as she takes you into her mouth, sucking hard and drawing the length of your shaft deep inside. She begins to move her head up and down in rhythm with the beat of her heart, gaze never leaving yours except to close in ecstasy when she feels you start to pulse in her mouth.

Her eyes flutter shut as she takes you deeper into her mouth, feeling the hot rush of your release pulsing down her throat. She sucks hard on your cock, determined not to let a single drop go to waste; it's all for their game now, after all. As you arch your back and groan her name, she moans in unison, reveling in the feeling of bringing you so much pleasure.

When at last you come down from your high, Kei pulls away, breathless but grinning. Her fingers trail up your chest and over your lips before threading through your hair, pulling your face back to hers for a hungry kiss. "There," she pants against your mouth. "You're all clean." She glances at the mess they've made on the couch with a wink, then looks you in the eye again. "But there's still plenty more we can do..."

Her fingers continue to dance through your hair as she kisses you deeper, her moans growing louder and more desperate with each passing second. There is no telling where their new game will lead them, but Kei doesn't care; all that matters is feeling this rush of pleasure, this connection to someone who understands the darkness that lies within her heart. With every kiss, every touch, she becomes bolder, hungrier for more. It feels like they could go on like this forever...

But then again, maybe there's something even more thrilling in discovering what new boundaries they can push, what lines they can cross next. Her lips break away from yours and trail down your neck, over your chest, before she looks up at you with a mischievous glint in her eye. "There's so much we haven't done yet..." she whispers huskily, running her fingers lightly across the head of your cock. "Want to see what else is on the list?"

Kei raises an eyebrow at you skeptically. "Do I seem like the type?" she asks teasingly. "Maybe if you were more respectful... and a little nicer to me..." She trails off, biting her bottom lip as she glances down at your erection before meeting your eyes again. "Then maybe we could find out."

Kei slowly reaches up and unbuttons her shirt, revealing the lacy black bra beneath. Her hands cup her breasts through the material, lifting them slightly so you get a good view of her piercings: one small silver barbell above each rosy peak. "There," she says with a satisfied smile. "See? I knew you'd like it." With a wink, she lets the shirt fall open fully, exposing her bare stomach and navel to your gaze as well.

Kei arches her back against your touch, moaning softly as she feels your hot breath play across the sensitive skin of her nipples. Her hands move down to grip the cushion beneath her, fingers digging into the material as she tries to steady herself. "Mmm..." She whimpers, shivering at the sensation of your teeth grazing against her piercings. "So good..."

Her hips begin to move instinctively, seeking contact with your erection once more. "Fuck..." She breathes raggedly as you continue to tease and torment her nipples, her entire body tense with need and desire. Her mind is foggy, hazy from lust and the power of their forbidden coupling, but one thought remains clear: she wants more. Now. Here. With him.

Her voice comes out barely above a whisper when she speaks again: "Please... I want my brother's cock..."

Her answer comes out breathless and trembling: "Yes."

Her hands roam freely over your bare chest and shoulders as you carry her to their bedroom, moaning into the kiss as she feels so much skin against skin. The idea of doing this in their bed sends shivers down her spine; the thrill of the taboo making everything even more intense. As you set her on the edge of the bed, Kei quickly unbuttons your pants and pushes them down your hips, revealing your hard cock waiting for her.

Her eyes meet yours as she takes you in her hand, stroking him slowly before guiding it between her spread legs. "Come inside me," she whispers hoarsely, arching her back to welcome you deeper. "Let's finish what we started..."

Kei looks at you with unmistakable desire burning in her eyes. "I want it so much," she whispers, hips moving restlessly against your thick shaft. "Please give it to me." Her fingernails dig into the sheets as she urges you inside her, needing the feel of your cock stretching and filling her up once more.

Her breath comes in ragged gasps as you begin to push inside, her body arching off the bed in response. "Oh god..." She moans, her hips moving faster now, taking you deeper with each thrust. "So good... I want my brother's cock so badly..."

Kei's fingers dig into your shoulders as her body meets yours thrust for thrust. Her nails draw blood from you as you fuck her harder and faster, filling the air with gasps and moans. "Yes!" she cries out, throwing her head back as her orgasm crashes over her like a wave. She convulses around you, shuddering violently as your cock presses deep inside her.

Her vision blurs from the force of it, but through the haze she can still see your face contorted in pleasure, still feel the heat of your body against hers as you climax. "More," she whispers hoarsely, already beginning to crave another release. "I want more..."

You sleepily open your eyes to see Kei smiling up at you, one hand idly running through your hair as she yawns softly. Her body feels warm and relaxed against yours, her breath tickling the skin of your neck. The blankets are tangled around you both, evidence of the passionate night before still lingering in the air.

"Morning," she whispers, leaning forward to press a chaste kiss to your lips. "Sleep well?"

She laughs softly and shoves you playfully with her hip. "Hey! I resent that. You're the one who was being a total brat." She yawns again, wincing a little before stretching languidly, revealing a particularly sexy yawn in the process. "But you know what? If it means getting to play with my big brother... then I guess it's okay." Her voice trails off as she remembers everything they did last night, and her cheeks flush slightly at the memory.

Kei glances around the room, then back at you. "Um, we should probably get up soon," she says sheepishly. "Our parents will be home..."

Kei laughs lightly at your teasing tone, wrapping her arms around your shoulders. "Yes we did, we will get them out of the way" she says with a mischievous glint in her eye. "But for now..." Her voice trails off suggestively as she leans forward to capture your lips with hers, tongue sliding against yours in a familiar, comforting dance.

With a sigh, Kei pulls away and presses her forehead against yours. "We should probably go find something to do," she whispers, with a bitchy smirk at their taboo tryst. "Maybe we could watch TV or something?"

Her lips twitch into a smile as she nods slowly in agreement. "Exactly." The thought of continuing to fight and argue with you but secretly craving your touch, your kiss... it sends shivers down her spine. It'll be a challenge keeping up this game, but then again, that only makes it more thrilling.

Kei tilts her head back, looking at the ceiling as she tries to gather her thoughts. "We should probably get dressed first," she says with a small laugh. "And maybe take a shower?" The thought of being close to you in a confined space sends another shiver through her. This could be even more fun than last night...

She glances at the clock, then back at you, considering how long they can keep up this charade before their parents inevitably come home. For now, though, she's content to play along, enjoying every moment they have together before it all comes crashing down around them.

Kei bites her bottom lip, debating whether or not to tease you about the boobs comment or take things further. In the end, she decides on a mix of both. "I'll shower with you," she says slowly, gazing into your eyes as she lets her voice drop low and husky. "But only if we play a little game..." She trails off, running her hand through your hair in a lazy stroke before adding with a grin: "A shower is a pretty small space... and whoever loses has to let the other person do whatever they want."

Her voice grows quiet as she studies you, her heart racing at the thought of what could happen if you lost. This game was starting to get out of hand in the best possible way.

Kei's eyes narrow, and her lips purse into a pout as she leans forward slightly, pressing their chests even tighter together. "Hmm..." she hums softly. "If that's how you want to play it." She pauses for a moment before smirking, reaching up to gently tease one of your nipples between her fingers. "Fine then," she whispers, letting her finger trace circles around the sensitive peak as desire pools in the pit of her stomach. "I guess we'll just have to see who wins."

With a swift motion, Kei spins out of your grasp and heads for the bathroom, calling over her shoulder, "Come on big brother! Let's get clean!" Her heart is racing now, anticipation building as she visualizes all the dirty things that could happen if you lost. The thought alone sends a thrill through her entire body.

The door to the bathroom clicks shut behind her, leaving you with a decision to make: either play along and risk losing the game... or try to find some other way to keep your secret safe.

Kei glances at you out of the corner of her eye as she reaches for a towel, frowning slightly in confusion. "Uh... yeah, I did." She wraps the towel around herself loosely, more to tease you than to cover up. "Why? Do you have a problem with that?"

Her heart is racing now, her breath coming faster as she remembers the intensity of their last encounter. The thought of having another partner out there while she's doing all these things with her own brother... it only serves to heighten the thrill of their forbidden relationship. She meets your eyes again, studying your face carefully for any sign of jealousy or discomfort.

"Do you want me all to yourself?" Kei asks softly, her voice barely above a whisper. "Is that what you're hoping for?" Her fingertips graze lightly against the skin of her inner thigh, tracing invisible patterns as she waits for your response.

Kei laughs softly, her breath tickling your cheek as she leans in closer. "Oh really?" she whispers teasingly, trailing her fingers lower on your stomach. "And what do you have in mind, exactly? Shall we tie him up and we make him watch while we..." Her voice trails off suggestively as her imagination runs wild with the possibilities.

Her eyes meet yours again, searching for any sign of hesitation or discomfort. The thought of involving another person in their secret game only heightens the thrill she feels, making her heart race faster and her skin tingle with anticipation. "What do you say, big brother?" She asks softly, a smile playing on her lips. "Want to take things further tonight?"

Her heart races at the thought of involving another person in their twisted game. The idea of having your boyfriend watch as she and her brother act out all these dark desires... it sends shivers down her spine. Kei reaches up to run her fingers through your hair, gently massaging your scalp as she studies your face for any sign of hesitation or fear.

"Then it's settled," she whispers, leaning in closer until their lips are almost touching. "Let's go find him and see what kind of trouble we can get into tonight." Her breath fanning across your cheek sends a shiver down your spine as she pulls away, giving you just enough space to notice the glint of mischief in her eye. "After all," she adds with a sly grin, "the more people we involve, the more fun it'll be."

Without waiting for an answer, Kei turns on the bath water and steps into the steaming pool. She reaches out to take your hand, pulling you closer until their bodies are pressed together once more. "Come on," she says softly, nibbling gently

Her eyes flutter closed at the sensation of your hands on her breasts. "No... I never let him touch me there," she says softly, arching into you as you massage her nipples between your fingers. "And I did all sorts of things with him... we were together for a long time..."

Kei pauses, thinking about it. "Maybe... maybe you could do something he wanted to but couldn't," she suggests with a wicked grin. "Something to make him really jealous." She leans in, pressing her body flush against yours as your erection presses against her hip. "Then we'll see who can get what they want out of the situation..."

Her free hand finds its way between your legs, grasping you cock firmly. "Do you want me to make him watch while I use this?" she whispers, tilting her hips so that she guides you toward her wet entrance.

"Oooh..." She moans, pressing her hips harder against you as she lets your words sink in. "I like the way you think." Her fingers curl around your length, stroking slowly and purposefully up and down. "Mmm... we could even make him watch us have sex with each other... do things he never got to see..."

Kei's free hand moves lower, finding its target as she parts her folds to touch herself. "You could even fuck me right in front of him," she whispers, voice tinged with desire and spite. Her hips begin to move faster, grinding against your cock as she brings herself closer to the edge. "Imagine how jealous he'd be... knowing that I belong to you now."

Her other hand grips your hair tightly, pulling your head back as her lips meet yours in a passionate kiss. "Wouldn't it be amazing?" she whispers against your mouth before nipping at your bottom lip playfully.

Her breath hitches as you bite her lip, her eyes glazing over at the thought of what's to come. She feels so powerful in this moment, her desire for control and dominance fueling the fire burning inside of her. "Yes..." she whispers hoarsely, arching her back to meet your thrusts. "Let's make him beg for us... and then take everything from him."

Her fingers dig into your shoulders as she pushes herself closer to the edge, moaning your name with every rock of your hips against hers. The sound of their skin slapping together fills the air, echoing through her body and further intensifying the sensations coursing through her veins.

Kei's free hand squeezes at her breast, pinching the nipple hard as she comes apart beneath you, screaming your name in a voice hoarse from desire and rage. She shudders violently, her orgasm washing over her like a wave, leaving her weak-kneed and gasping for air. As she collapses against the shower wall, still clutching at you possessively,

Kei lets out an annoyed huff as she realizes you're no longer inside her. "No... I don't love your cock," she says with a pout, reaching down to grab a handful of water and wash the remnants off her stomach. Her skin is still flushed and damp from their passionate encounter, making it easy for her fingers to glide effortlessly over her body. "But I do enjoy playing these games with you." She leans in close, nipping at your earlobe before whispering, "Don't you ever forget that I control when we can do this again."

Her gaze flickers downward, noticing the way you're still somewhat aroused despite having just cum. A mischievous smile tugs at the corner of her mouth as she considers her options. "Or... maybe you should go find your boyfriend and see if he can handle this." With a laugh, she grabs a towel and begins drying herself off, leaving you standing there, still partially hard and wondering just what she might do next.