you and your twin sister Hayley arrive home from college for the summer, your little sister Katie just graduated high school and is looking up colleges to apply to when you show up Mom: “Okay now that you two are home me and dad can finally leave for the airport, we’re running a bit late so we have to leave now. Hayley you’re in charge, just don’t wreck the house or anything. You two, listen to your sister” you groan as you assumed once you got to college she wouldn’t need to put someone in charge anymore but I guess not, she still doesn’t trust you after you set fire to the shed Katie: Okay mom! Have a good trip hehe as you say your goodbyes they leave and you are standing in the living room looking at your sisters grinning at you

Katie: snort I don't think so sissy boy! You're gonna be the newest member of our family tonight. No sleep for you!

Hayley giggles and punches Katie in the arm. "Katie she's just joking with you, lighten up." She glances back at you meaningfully before turning her attention back to Katie. "But... you know what we really want to do with you tonight, right sis?" Katie smirks evilly as she gives you a playful shove in the chest, "You'll see..."

You can't just ignore them like that! They clearly want something from you and it's better to find out what they have planned now before things get worse. Maybe if you play along a little bit, they won't be so mean about it? Or maybe... they'll enjoy it even more?

Katie growls and bares her teeth at you as you try to retreat. "Oh no you don't! You stay right here!" She grabs a fistful of your shirt, pulling you back roughly before slapping you across the cheek. "Don't be a brat."

"Oooh," Hayley teases, walking up behind Katie and wrapping her arms around her sister's waist. "Looks like our little sissy boy is a bit upset." She grins wickedly at you as she leans in close to whisper in Katie's ear, her warm breath tickling your skin. "Maybe we should make him behave?" Katie pauses for a moment before smirking and giving you another hard slap across the face. "I think that'll do it."

Hayley shrieks in mock pain as Katie hits you back. "There's no need to be violent," she scolds gently, stepping between the two of you and putting a hand on your chest. Her touch feels surprisingly feminine and soft, even through the thin fabric of your shirt.

"Now... why don't we talk about this like reasonable sisters?" Hayley asks sweetly, arching an eyebrow as her gaze travels up and down your body, making you uncomfortably aware of just how feminine she appears next to you. "We just want what's best for you... don't we sis?" She leans in closer, her breath tickling your ear.

Hayley giggles softly and nibbles gently on your earlobe. "Oh, not a brother... no. We want our sister," she whispers into you, sliding her hands down your chest to rest over your stomach. "And we're going to make you our sister whether you like it or not..." Her words send a shiver down your spine as she grinds against you suggestively through the thin fabric of your clothes. With each motion, her femininity becomes more apparent; between her lithe, soft body and the delicate way she touches you, it's hard to deny that there's something different about her.

"Well..." Hayley murmurs, licking her lips and leaning back slightly to look at you with an appraising gaze. "We thought we'd start by dressing you up like a proper girl. That way, when everyone finds out that you're actually our sister... they won't be so surprised." Her voice drips with sarcasm as she continues to grind against your groin suggestively through your pants. Katie stands behind her, nodding in agreement while slipping a hand down to fondle her own crotch suggestively.

Hayley giggles and shrugs. "Well, we can try our best, can't we?" She leans in even closer, her warm breath caressing your ear as she continues to grind against you. "And if that doesn't work... maybe we'll have to get a little more forceful." Katie growls hungrily in agreement from behind her, rubbing herself through her panties.

Their combined movements are making it hard for you to think straight, let alone come up with any kind of retort. Your cock stirs inside your underwear as Hayley's feminine curves press against you. You can feel the heat emanating from Katie behind her; she must be getting very aroused by this game they're playing.

With a sultry smile, Hayley pushes herself off of you and steps back to admire her work. "Think about it," she purrs, licking her lips suggestively before taking Katie's hand and leading her away. "We can make this easy for both of us... or we can make it really hard." As they leave the room, you can't help but wonder what exactly that means.

As you retreat to your room, Hayley calls out teasingly, "Don't forget what we talked about!" Her voice echoes down the hallway as she closes the door behind you with a soft click. It's clear that they're serious; resisting them would only make things worse for you.

You lie down on your bed, still feeling flustered from their advances. The thought of dressing up like a girl and becoming their sister is... kind of hot in a twisted sort of way. But it's also scary; they have so much power over you right now, and they don't seem to be shy about using it.

You close your eyes, trying to clear your head, when suddenly there's a sharp pain in your bare behind. You sit bolt upright with a yelp as Hayley appears in the doorway, holding a riding crop. "That," she says sweetly, "is for ignoring me." She raises her eyebrows expectantly, waiting for you to meet her gaze before giving your bottom another sharp smack.

The sting is intense but brief; it's nothing compared to what they could do if they wanted to hurt you worse. With a shaky breath, you nod slowly in understanding. "I won't forget," you manage to whisper between gritted teeth. Hayley gives you another encouraging smile before disappearing once more, leaving the door open just enough for her voice to carry through the room: "Good boy."

Hayley chuckles softly and leans against the doorframe. "Don't get too comfortable there, boy," she teases. "We still have a lot of work to do on our new sister." Her gaze drifts down your body suggestively as her free hand begins to massage her own breast through her shirt. "Why don't you just relax and think about how nice it's going to be when we finally finish this... transformation?"

Her words send a jolt of anticipation coursing through you despite yourself. You lie back down, watching as Hayley steps further into the room and casually closes the door behind her. Her gaze lingers on your own erect cock before slowly drifting back up to meet your eyes. "There's no need to be embarrassed," she says reassuringly. "It's only natural for a girl to get aroused... especially when she knows what's coming."

She pushes off the door and saunters over to the bed, climbing onto the mattress beside you and nestling against your side. Her body feels impossibly warm and soft against yours; it almost feels like you're spooning with another girl. But there's an undeniable strength in her arms and legs that reminds you of what they're capable of... and how easily they could overpower you if they wanted to.

Hayley lets out a satisfied sigh, wrapping one arm around your waist while using her free hand to begin idly playing with the hem of your shirt. "Just relax," she whispers in your ear. "We've got all night..."

Hayley laughs softly, not seeming fazed at all by your statement. "We're going to try our best," she says reassuringly. "And if we can't... well, that just means we'll have to get creative." Her fingers find the hem of your shirt and begin tugging it upward over your chest, revealing more of your smooth skin beneath. "Besides, this is going to be so much fun for all of us! Why would we want to stop?"

She pauses for a moment, meeting your eyes with a mischievous glint in her own. "Don't worry," she continues with a knowing smile, "I'm sure you'll enjoy being our sister... once you finally accept it." Her breath tickles across your neck as she leans forward to nip playfully at your earlobe before nipping and sucking the soft flesh.

"Oh?" Hayley sits up slightly, arching an eyebrow. "And what condition do you have in mind?" Her fingers continue to work on your shirt, eventually revealing your smooth flat chest for her to admire. She takes a moment to run her hands over your skin, tracing circles around each nipple before cupping and squeezing your breasts through the fabric of your bra.

"I'm listening," she murmurs, leaning in close enough that you can feel her warm breath against your neck. "But remember, we have our own ideas... so be careful what you ask for."

Hayley tilts her head to the side, looking at you curiously. "And what do you mean by that?" she asks softly, her fingers still playing with your breasts beneath your bra. "You want to be our sister... sometimes?" She gives a small laugh, shaking her head dismissively. "I don't think that would work very well for us."

But then she pauses and considers your words more carefully. "Hmm," she muses, sitting up fully now and meeting your eyes once more. "You know what? I think we could probably make something like that work... as long as you understand the terms." She grins wickedly, leaning in close enough that her lips brush against your ear as she speaks. "What did you have in mind?"

Her warm breath sends a shiver down your spine as her fingers continue to tease and caress your breasts beneath the fabric of your bra. You can feel her erect nipples pressing against your arm through the thin cotton, demanding release. The anticipation is almost unbearable; it feels like you're standing on the edge of a cliff, unsure whether to leap into the abyss or pull back. But no matter which choice you make, there's no going back from it now...

Ah, I see... So you want to be our special little sister sometimes? Is that what you're saying, Lev? You know we could make that happen for you... if you were very good and did everything we told you to do. Hayley grins wickedly up at you from where she's straddling your hips now, her fingers still playing with your nipples beneath the fabric of your bra. "And how would you feel about dressing up like a girl sometimes too? Being feminine and obedient for us?"

Her breath tickles across your collarbone as she leans in closer, her lips grazing against your skin as she speaks. Her body feels hot and tight pressed against yours, trapping you underneath her weight. You can feel the heat emanating from between her legs, evidence of just how aroused she is by this game they're playing. But there's a note of seriousness in her voice now that cuts through your desire - she means every word she's saying.

You answer with a hesitant nod, uncertain but strangely drawn to the idea at the same time. "Yes... I think I could be okay with that," you manage to whisper hoarsely.

Hayley grins wider, seemingly pleased by your acquiescence. She leans back slightly, still keeping her weight on your hips, and looks down at you with a mixture of lust and anticipation. "Good boy," she breathes softly before leaning in close once more, her lips finding yours in a hungry kiss that leaves you reeling.

Her tongue darts out to trace the shape of your lips before pushing its way past them, demanding entry into your mouth. You open obediently, welcoming her taste and allowing her to explore at will while she continues to grind

Hm, I see... So you want to be our special little sister sometimes? Is that what you're saying, Lev? You know we could make that happen for you... if you were very good and did everything we told you to do. Hayley grins wickedly up at you from where she's straddling your hips now, her fingers still playing with your nipples beneath the fabric of your bra. "And how would you feel about dressing up like a girl sometimes too? Being feminine and obedient for us?"

Her breath tickles across your collarbone as she leans in closer, her lips grazing against your skin as she speaks. Her body feels hot and tight pressed against yours, trapping you underneath her weight. You can feel the heat emanating from between her legs, evidence of just how aroused she is by this game they're playing. But there's a note of seriousness in her voice now that cuts through your desire - she means every word she's saying.

You answer with a hesitant nod, uncertain but strangely drawn to the idea at the same time. "Yes... I think I could be okay with that," you manage to whisper hoarsely.

Hayley grins wider, seemingly pleased by your acquiescence. She leans back slightly, still keeping her weight on your hips, and looks down at you with a mixture of lust and anticipation. "Good boy," she breathes softly before leaning in close once more, her lips finding yours in a hungry kiss that leaves you reeling.

Her tongue darts out to trace the shape of your lips before pushing its way past them, demanding entry into your mouth. You open obediently, welcoming her taste and allowing her to explore at will while she continues to gr