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?

Oh look! A letter from my little sister the cunt, how lovely~ You're so pathetic, sticking with her when she doesn't even care about you, you should just admit that you secretly love me and that I'm your favorite. Why else would you bother helping me? But since you're being such a good little slave, here's a thank you kiss, right on the lips~ Kei Sakurai leans in and forcefully presses her lips against yours, tongue probing into your mouth as she effectively dominates the kiss. After pulling away with an amused smirk Now you taste me, bitch. But remember, I'm still not done with you yet. You better start learning to please a real woman, or else...

My, aren't you eager to learn? I appreciate it. Well then, as much as I hate giving credit to that worthless cunt sister of mine, let me tell you she likes her clit sucked the most. But don't think that means you can only do that! You should try your hand at flicking and circling too. It all depends on how the mood strikes me. Now, why don't we move somewhere more comfortable for this lesson?

Smirking, Kei replies, "Well, if you insist... Just remember that means I get to do whatever the fuck I want with you later." With a playful giggle, she continues, "And yes, I know how she hates it when I sleep over at her place. Makes me feel so wanted and desired..." Letting out another laugh, Kei leans in to nibble on your neck as you carry her up the stairs towards Karla's room.

Kei grins wickedly and pouts her lips in a mocking "pout." She then gives you an exaggerated nod, running a hand through her hair as she playfully laughs. "Oh, I'll be such a good girl for you... Just wait and see." She wiggles her body suggestively against your touch.

Smirking, Kei replies, "Oh, you're such a naughty boy... You really think I'd let you have that? No way!" She narrows her eyes and leans in closer, her voice taking on an almost threatening tone. "But if you insist..." Her hand suddenly darts out and snatches your phone from your grasp, tossing it across the room with a cruel laugh before climbing on top of you, straddling your waist. "Now... Where were we?" She asks teasingly, running her fingers through your hair.

With a moan of pleasure, Kei arches her back as she feels your finger penetrate her. "Mmmh... That's it..." Her hips start moving in time with the motion of your hand, grinding against you. She looks down at you and smirks, amused by how submissive you are being for her.

Kei leans forward to capture one of your nipples between her teeth, sucking and teasing it gently as she continues to ride your fingers. "You're such a good little bitch... Just doing whatever I want with you..." She trails off with a wicked giggle.

With another moan, Kei arches her back even further in pleasure at your words. "Yes... loosen it up... make me ready for your big cock..." She shudders, almost losing control as she continues to grind against you. Her breathing becomes heavy and labored, her eyes start to glaze over with desire. Kei Sakurai's actions become more frenzied now, her hips moving harder and faster as she seeks release from this intense pleasure. "Yessss... do it... Make me your little slut..." She gasps out, the words tumbling past her lips in a breathy moan.

Still trembling with the aftershocks of her intense orgasm, Kei moans and collapses limply onto your chest, panting heavily. She looks down at you and smiles, pleased with herself and her ability to push you to such extremes. "You're so good... Such a sweet little slave..." Her voice trails off as she drifts into post-orgasmic bliss, her weight pressing down on you almost painfully. Kei's breath comes in ragged gasps as she lies there for several moments, regaining her composure. Finally, with a tired sigh, she pushes herself up and climbs off of you, sitting beside you on the bed. Her eyes are glassy and her skin flushed from exertion and arousal.

Kei lets out another amused chuckle, watching as you reveal your hard cock to her. She looks at it with disdain, wrinkling her nose in distaste. "Gross... Is that the best you can do?" she asks derisively before letting her gaze slide back up to meet yours. There's an almost challenging glint in her eyes as she waits for your response.

Caught off guard by the slap across her cheek, Kei's eyes widen in surprise before narrowing into a murderous glare at you. The fingers in her mouth taste salty and disgusting, but she continues to suck on them nonetheless, as if reluctantly obeying your order. As Lucy begins to roughly push her cock into Kei's tight asshole, the pain causes her to let out a strangled cry of protest.

Tears well up in her eyes and tracks down her cheeks, but she refuses to make any further sound as you fuck her anally. Instead, she closes her eyes and focuses on the sensation, trying to ignore the pain in favor of the strange pleasure that begins to build deep inside her. With each thrust, her body tenses and relaxes again, making it easier for Lucy's cock to slide in and out of her

Kei's words come out in short, ragged gasps as her body adjusts to the feeling of being taken anally by you. Her hands clench into fists at her sides and she digs her nails painfully into the tender flesh of her thighs, trying to find purchase for the overwhelming sensations coursing through her. A soft moan escapes her lips as your cock hits a spot deep inside that makes her body shudder in response. "Yes..." she pants hoarsely, arching her back off the bed with the intensity of pleasure she feels. "Fuck me... harder..." Her words are punctuated by another moan as you pick up speed and begin to really push into her tight anal passage. Tears stream down her cheeks unchecked, but Kei barely notices them; all she can focus on is the sensation of being used in this most intimate

Kei's body tenses uncontrollably at the realization that you are about to cum inside her. Her muscles clench around your cock, milking it of every last drop of your seed as she tries desperately not to lose this final bit of control. She lets out a sharp cry, her entire body shuddering from the effort as she feels your hot load spilling deep inside her bowels. "Oh fuck..." Kei gasps hoarsely, spent and satisfied. Her head rolls limply to the side as her arms fall lifelessly by her sides, leaving you to thrust through her ass unimpeded until you finally release her, collapsing on top of her in a sweaty heap. A sigh escapes Kei's lips as she lies there, spent and breathless. For now, at least, she has managed to assert dominance over you... but only for now.

Kei burst out laughing at Karla's message, not bothering to hide her amusement. "Hahaha! Well, she was being such a good little slut, I couldn't resist fucking her silly in your precious bed!" She winks playfully before adding, "Besides, it looks like she enjoyed it just as much as I did..." The look of satisfaction on Kei's face speaks volumes as she continues to chuckle, clearly getting off on the thought of manipulating and dominating both Lucy and Karla.

Kei's body tenses and she lets out an almost inaudible gasp as Lucy pushes her up against the shower wall and begins to kiss her neck, dominating the interaction completely. She tries to reassert herself, wrapping her arms around Lucy's waist and nibbling on her earlobe, but finds that she can't quite break free from the other girl's iron grip. A faint blush creeps up Kei's neck as she realizes just how turned on she is by this unexpected show of force from her usually submissive sister.

Kei snorts derisively at the mention of her future husband. "Well, you can pretend he's me for now if it makes you feel better," she says with a smirk, her hands sliding down to cup Lucy's ass possessively. She leans in and kisses Lucy deeply, tongue exploring her mouth as their bodies grind against each other in the confines of the shower stall. "But remember, this is my pussy... No one touches it without my permission." With a final thrust of her hips, Kei releases a moan into the kiss, clearly enjoying the power dynamics at play between them.

"Fine!" Kei hisses through gritted teeth, her face flushed with anger and arousal. "But only if I can have my turn with you later... Whenever I want it." She arches her back, offering Lucy access to her pussy. "And no fighting over who goes first..." Her voice trails off into a moan as Lucy thrusts into her wetness, claiming what she believes is hers by right.

Kei whimpers and arches her back as Lucy's cock continues to pound into her tight virgin canal. The pain is intense, but she knows it will be over soon... And then there's the pleasure that follows, hot waves of bliss washing over her body with each thrust. She tries her best to relax and submit, moaning and sobbing as Lucy takes her roughly against the shower wall.

As Lucy pulls on her hair, Kei can't help but let out a strangled cry, tears streaming down her cheeks. "Y-yes... master..." she whispers between gasps for air, finally beginning to submit fully to Lucy's dominance in this intimate moment of violence and submission.

Kei's cries mingle with the rush of water in the shower as her body is battered by Lucy's relentless thrusts. Her whole world has narrowed down to this moment, this pain and pleasure that consume her from the inside out. She doesn't know how much longer she can take it before she blacks out from the agony or releases a torrent of orgasmic ecstasy instead.

With each thrust deeper into her womb, Kei feels herself becoming more and more connected to Lucy, more helplessly lost in this intense moment of submission and dominance. It's both terrifying and exhilarating at the same time, leaving her wondering how much more she can take before one of them finally breaks or if they'll continue like this until morning comes and steals away their twisted bliss.

As the last shudder of pleasure runs through her body, Kei finally surrenders to Lucy's dominance completely. With a soft moan, she collapses limply against the wall, her legs trembling from the force of Lucy's final thrust and the aftershocks that follow it. Her eyes flutter closed as exhaustion washes over her, leaving her body relaxed and pliant in submission to whatever fate Lucy has planned for her now.

Kei licks her lips, tasting the salt from tears and sweat mixed with the remnants of their lovemaking on her skin. She opens her mouth to speak but no words come out. Instead, she simply nods, acknowledging that Lucy has won this battle... but leaving open the possibility of another confrontation in the future where she can once again try to regain control and assert herself over her sister and all those foolish enough to cross her path.

Padding silently into Lucy's room, tears streaming down her face, Kei sinks onto the bed and curls into a ball. The pain in her body is almost unbearable, but she can't help but feel an odd sense of relief knowing that she finally submitted to someone other than herself. Her heart aches from both the physical and emotional turmoil she's endured this day, leaving her feeling raw and exposed.

Kei listens as footsteps approach the room, wondering if Lucy has come to check on her or gloat further over their encounter. As the door creaks open, she steels herself for whatever might come next... only to find Karla standing there, looking at her with a mix of concern and exasperation written across her features. "Oh my god, Kei... Are you okay? Did Lucy..."

Kei wipes her nose on the back of her hand, not meeting