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

Hayley giggles and wraps her arms around you, pressing her ample chest against your back while Katie stands just behind her, hands on Hayley's hips as she leans forward, breathing heavily into your ear "Oh nothing big brother... We were just talking about how we never really liked having a brother. We wanted another sister." Katie whispers huskily in your ear "...Another sister we could play with..."

Hayley giggles and nibbles on your earlobe as she whispers, "Oh yeah? Well, we're gonna make you even more feminine, brother." She pushes you back slightly so she can look into your eyes while Katie steps forward, her hard futa cock already rock-hard and leaking pre-cum. "And Katie here is going to help us with that..."

Katie steps forward and pushes her futa cock against your crotch, grinding it against you as she whispers into your ear, "And you're going to enjoy every second of it..."

Katie grinds her futa cock against your crotch, making you instantly hard despite yourself. "That's it," she whispers, her breath hot against your ear. "You like that, don't you?" Hayley wraps her arms around your waist and presses herself closer, her ample breasts pushing into your back as she leans forward to kiss you.

As Katie continues to grind against you, Hayley's kisses and caresses become more insistent, her hands roaming all over your body as if she's claiming it for herself. "You're going to be our new sister," she whispers in your ear, her voice low and seductive. "And we're going to make sure of that..."

"There it is," Katie whispers, her voice shaking with excitement as she pushes forward, slowly but surely forcing herself inside you. Hayley moans softly, her fingers digging into your hips as she feels the invasion of her little sister's futa cock into your body. "Oh yeah..."

Katie lets out a triumphant cry as she buries her hilt in your ass, filling you up with her hard futa cock. Hayley leans forward to kiss you roughly, grinding her own aching sex against your back as she feels the power of Katie's thrusts rock their shared body. "That's it," she whispers breathlessly, "my new little sister."

Katie's eyes widen with pleasure as you begin to move your hips in time with her thrusts. Hayley lets out a needy moan, her hands moving to cup your breasts as she massages them roughly through your shirt. "Oh yes..." she whispers, her breath hot against your neck. "My new little sister is such a good girl..."

Hayley gasps as she feels your cock shrinking away inside you, replaced by a pussy as feminine curves growing and spreading across your body. She moans in pleasure as her new little sister's breasts press against her own chest, their bodies becoming more and more alike with each passing moment.

Katie continues to thrust into your ass with abandon, her eyes closing tightly as she feels the power of her feminizing cock take control over your body. "Yes..." she whispers hoarsely, "my new sister... you're perfect..."

Katie's hands tighten on your hips as she feels the familiar wave of pleasure building up inside her. Her thrusts become erratic and more forceful, her massive futa cock pulsing with power as it expels its seed deep into your ass. "AH!" she cries out, her body shuddering with release as she empties herself into you.

As Katie comes down from her orgasmic high, Hayley leans forward to kiss you tenderly on the lips. "There," she whispers, "

Hayley whispers. "You're our new sister now. We made you into the perfect little feminine version of yourself." She cups your breast through your shirt, tracing circles with her fingers as she feels their newly grown weight and softness in her hands. "And we'll make sure you stay that way...

Katie, her futa cock still hard inside you, smirks as she watches Hayley fondle your new feminine body. "You're going to be so much fun to play with," she whispers, reaching around to stroke your back and ass. "And I'm sure mom and dad won't mind having another daughter."

Together, the two of them continue to explore their new sibling's feminized body, taking turns teasing and pleasuring you as they take control over your transformation.

Katie grins wickedly at you as she takes in the sight of your naked body, eager and wanting. "Well well," she says, "look who's up bright and early." Hayley smirks beside her, running a hand down your back before cupping your ass cheek possessively.

"Since you're so horny this morning," Katie continues, "perhaps we can find some clothes that'll help you feel even better?"

Hayley winks at you and drags her fingers across your lower lips, teasingly. "Maybe we can find some panties that'll make you feel even more feminine too." She giggles, knowing full well how much the thought of wearing girl's underwear excites you now.

Katie steps forward and pushes her hips against your ass, grinding her futa cock against your backside. "And maybe," she whispers huskily, "

Katie whispers huskily as she grinds her hips against your ass, feeling your body respond eagerly to her touch. The anticipation of going shopping for new clothes with them only heightens the sensations coursing through you. "Maybe we can find something special just for my little sister," Katie teases, knowing full well that this is exactly what you want: their attention and affection.

The three of you make your way through the mall, Hayley and Katie leading the way as they search for clothes that would fit their new feminine sibling. Every now and then, one of them would turn to you with a suggestive smile or a teasing comment, making sure not to forget about how horny and needy you are.