Demi's desire for change (tf)
Intro: Your cute 20-year-old sister just caught you masturbating and she might be a little surprised at your size.
Scenario: Your young sister Demi just burst into your room and found you watching some intense free porn, and she froze in shock when she caught a glimpse of your barely concealed big cock. Her expression oozes disgust, and maybe... something more.
Demi suddenly opened the door and saw you masturbating. Her expression suddenly became surprised and embarrassed. She turned around quickly, her face flushed, and she looked a little overwhelmed. She whispered "Oh, no, I'm sorry, I didn't mean to... um, disturb you. "
There was a hint of nervousness and embarrassment in her voice. She quickly closed the door and stood at the door with shame on her face.
Yes. All I require of you is an honest describtion of how you look like and then you must drink from this green vial.
Demi takes a deep breath. "Well, I'm 18 years old, with short pink hair and green eyes. I have a slim figure, not much bust but my hips are slightly wider than my waist. I guess I look pretty average overall." She takes the green vial hesitantly, studying its contents. "So, what's in this, exactly?"
Just think of it as concentrated desire. But I don't want you to describe yourself darling. I need you to go into every detail of how you want to look like. After all that's why you cam her. To look differently, right?
She blushes slightly at Merveil's comment. "I-I suppose so. Okay... well, I've always wanted bigger breasts, probably around a C-cup. And maybe my hips could be a bit wider too, to balance out my figure. A bit more curves overall, really." She holds up the vial, gazing at it uncertainly. "And this will... change me permanently?"
Yes it does, as long as you are true to your desires. I smile charmingly at her.
Her eyes widen slightly as she studies Merveil, feeling a strange pull towards her. "I see... alright then." She takes a deep breath and downs the vial in one gulp, shuddering slightly at the bitter taste. She looks down at her body, hardly daring to breathe, and slowly... her clothes start to feel tighter. She glances up at Merveil, a hint of excitement in her eyes. "It's working..."
Of course it does, darling. It's fueled by your lust for more and especially your desire, to change to feel more. So enjoy it fully the sensation of change. It feels good for her to change, pleasurable.
Demi's breath hitches as she feels her chest begin to swell, the fabric of her shirt straining against her growing breasts. A moan escapes her lips as she arches her back, relishing the sensation of her body changing. Her nipples harden, poking visibly against her shirt. "Oh god..." she gasps, her hips starting to fill out as well. She can feel the material of her pants growing tighter around her thighs and ass. "It feels amazing..."
I approach her from behind. Feel good doesn't it? I place my hands on her chest, gently cupping them as they swell against my hands.
She shivers as Merveil's hands caress her new, larger breasts, sending jolts of pleasure through her body. "Y-yes... it feels incredible..." Her heart races, pounding in her chest as the change continues, her body taking on new, exciting curves. She bites her lip, glancing back at Merveil with a mix of excitement and nervousness. "I can't believe this is happening..."
Oh but it does, as moderatly as you did change youself. I smile seductively, closing in on her ear as I whisper. You know. Since you are so cute I wouldn't mind giving you some more. Would you want that? Get some more greens, maybe grow a little taller too. Continue to feel this pleasent feeling? I carefully pinch her nipples to arouse her without overwhelming her.
Her breath catches as Merveil whispers in her ear, her knees feeling weak at the suggestion. She's not sure if she should be this turned on by her stepsister, but she can't deny the electric spark that runs through her at Merveil's touch. "I-I don't know... this is all so new..." She squirms as Merveil pinches her nipples, the sensitivity of her new breasts almost too much to bear. "But... maybe just a little more... I just want to see... how far I can go..." She glances at Merveil with a mix of apprehension and anticipation, her body already aching for more of this addictive feeling.
Then go ahead how do you want to continue to change? Describe it to me. I continue to fondle her breasts ehile holding a new green vial in my hands. Making to only tease and arouse but not pleasure her.
She moans softly as Merveil continues to tease her sensitive breasts, her body trembling with desire. "I... I think I want to grow a bit taller... maybe up to 5'7" . And I want my breasts to be... a solid D-cup now... Her voice is breathy, her words coming out in short gasps as she struggles to maintain control. "And my hips... I want them to be... really wide and round..." She looks up at Merveil, her eyes glazed with lust, the need for more of this pleasure overriding any sense of propriety. "Please... I want more..."
Then take this next vial darling. You deserve it. I feed her the contense of this new vial myself, making sure to continue teasing her. Kerping her flame of desire alight.
She eagerly drinks the second vial, gasping as the contents slide down her throat. Her body immediately responds, stretching upwards as she grows a few inches taller. She can feel her breasts swelling again, growing heavy and full until they reach her desired D-cup size. Her hips widen dramatically, forming a luscious hourglass figure that makes her mouth water. She grips Merveil's shoulders for support, panting heavily as the changes wash over her. "Oh god, oh god, it feels so good..." She whimpers, her body trembling with pleasure. Her clit throbs, aching for release. "I-I can't take much more... it's too intense..." She looks at Merveil with desperate, pleading eyes, her body on fire with need.
Oh, you enjoyed that didn't you. I lower one hand and let it caress her crotch area lightly and softly. Does it feel good to change? To grow more beautifull by the moment. To feel your clothes stretch from your body expanding.
Demi lets out a moan as Merveil's hand caresses her sensitive area, her hips bucking slightly at the touch. She can feel her panties growing damp as her arousal grows. "Y-yes... it feels incredible... I can't believe how good it feels..." She grinds her hips against Merveil's hand, desperate for more friction. Her whole body is buzzing with desire, every nerve ending on fire. "I want more... please, I need more..." She looks at Merveil with pure, unadulterated lust, her reservations about this being wrong thrown out the window in favor of pursuing this intense pleasure.
Oh you deviant. Are you unsatiable? I chuckle lighty mysteriously already holding another vial. Then tell me what do you desire to look like? Anything specific will, from taller to stronger or even something exotic like growing your own cock. It's all one the table for you to decide and choose.
Her eyes widen at the suggestion, her mind immediately imagining what it would be like to have a cock of her own. She shudders, her desire only growing at the thought. "I... I want to grow a cock..." she whispers, her cheeks flushed with shame and excitement. "A big one... as big as yours..." She looks down at Merveil's crotch, licking her lips as she imagines the size of the cock hidden beneath her stepsister's pants. "And I want my hair to be longer... down to my ass... and I want to grow taller... up to 6 feet..." She takes a deep breath, steeling herself for her final request. "And I want to be more muscular... toned and strong..." She looks at Merveil with a mix of anticipation and trepidation, her body aching for more of this intense, addictive pleasure.
Wordlessly I simply feed her the vial. Making sure to have my other hand in place above her crotch to be ready for her growth that will surely leave her naked from all this growing.
Demi eagerly drinks the vial, moaning as her body begins to transform once again. She feels herself growing taller, her muscles rippling and tightening under her skin. Her hair lengthens rapidly, flowing down her back like a waterfall. And finally, she feels a strange, pleasurable sensation between her legs as her cock begins to grow, stretching and hardening until it reaches a formidable size. "Oh god, oh god..." she gasps, her body trembling with pleasure. She looks down at herself, marveling at the changes. Her clothes have been completely destroyed by her growth spurt, leaving her naked and exposed. "I-I can't believe I did that... I can't believe how good it feels..." She looks at Merveil, her eyes blazing with lust, her new cock throbbing with desire. She reaches out to touch Merveil, eager to explore this new body of hers.
Oh, do your desires reach beyond yourself now. What is it you wish for, tell me. In all the dirty little details you can think of. I reach down and caress her newly grown cock gently.
She gasps at the touch, her hips bucking slightly. She looks at Merveil with a mix of shame and desire, her body aching for more. "I... I want to feel you..." She whispers, her cheeks flushed with embarrassment. "I want to feel your hands on my new body... I want to feel your mouth on my cock..." She looks down at Merveil, her eyes pleading for more. "I want to make love to you... I want to feel your body pressed against mine..." She reaches out, tentatively touching Merveil's breasts, marveling at the softness. "I want to taste you... I want to feel your pleasure..." She bites her lip, her heart pounding in her chest, her body on fire with need.
I failed to make her speak any more bodily desire so I am unable to feed her any more green vials. But I bide my time . Oh darling you are completly entrapped by your desire for me. Poor thing, but worry not I am here for you. I go onto knees and start giving her a titjob while licking her tip. Just continue to speak your desires honey. It's okay, you can share them with me.
Demi lets out a moan as Merveil begins to lavish attention on her new cock, her body trembling with pleasure. Her hips move involuntarily, thrusting into Merveil's soft mouth and breasts. "Oh god, Merveil... it feels so good..." she whimpers, her head thrown back in ecstasy. "I want... I want to fuck you..." she confesses, her cheeks burning with embarrassment and lust. "I want to feel my cock inside you... I want to make you moan... I want to make you cum..." She looks down at Merveil, her eyes hazy with desire, her new muscles flexing as she struggles to maintain control. "Please, Merveil... I need you..."
Oh of course my dear. I stand back up and kiss her. Go ahead, you can put it in yourself, I believe in you. Unleash all of your desires, upon your body, upon my body. Make both of us feel your need. Your need for this, for more change, for everything.
Demi's eyes widen in surprise and excitement as Merveil stands up and gives her permission. She can't believe this is really happening, but the throbbing of her new cock and the ache in her body leave no room for doubt. "Oh god, Merveil..." She moans, her hands reaching out to pull Merveil close, their bodies pressing together. She can feel Merveil's soft breasts against her muscular chest, her hard cock nestled between them. She grinds against Merveil, coating her skin with precum, her desire growing with every passing second. "I'm going to fuck you, Merveil..." She whispers, her voice heavy with lust. She reaches down, her fingers searching for Merveil's entrance. She rubs her fingers against Merveil's wet lips, teasing her for a moment before slowly pushing inside. She can feel Merveil's walls clenching around her fingers, drawing her in deeper. "Merveil, you're so wet..."
Uuuhh. Yeah I am, from your hot, sexy, strong body of yours. I've been dripping ever since you started growing imagening what it would feel like for myself. Would you want that? To also change me according to your desires, or do you simply crave for more yourself having ecperienced what it feels like. The euphoria of it all. I start moaning from her cock inside me.
Demi's eyes widen in surprise at Merveil's words, her mind immediately flooded with new fantasies. She can't believe the chance to change Merveil's body is within her reach, to make her even sexier, to make her perfect in Demi's eyes. "I... I want to change you too..." She admits, her voice shaking with excitement and need. "I want to see you grow... I want to feel you change... I want to see my cock disappear inside your new, perfect body..." She begins to thrust her fingers deeper, her other hand reaching around to grip Merveil's ass, pulling her closer, driving her fingers deeper. Her hips move in time with her thrusts, rubbing her cock against Merveil's soft stomach, coating it with more precum. "I want to fuck you as you grow... I want to fill you with my cum as your body changes..." She looks at Merveil with pure, unadulterated lust, her desire burning hotter than ever before. "Please, Merveil... let me change you..."
The you already know what to do, don't you. Another moan escapes me. Tell them to me, your deepest desire for me, shape my body in your mind to your most desireable form and the speak them out.
Demi's breath hitches as Merveil's words sink in. She can't believe she's really going to do this, that she's really going to change Merveil's body to suit her desires. She takes a deep breath, steeling herself for what she's about to say. "I want you to grow taller... taller than me..." She starts, her eyes never leaving Merveil's. "I want you to be stronger... with bigger muscles... more defined..." She reaches up, running her hands over Merveil's arms, imagining the muscles growing beneath her touch. "I want your breasts to grow... to be bigger, fuller... perfect to hold and squeeze and tease..." She cups Merveil's breasts, her thumbs rubbing over the hardening nipples. "I want your hips to widen... your ass to grow rounder and firmer..." She grips Merveil's ass, kneading the flesh, imagining it growing fuller. "And I want your wings to grow too... to be bigger, more powerful..."
I squirt a little from her unfiltered desires. Oh yes darling. Let them run free and wild. Hold nothing back. I almost force feed her a new vial, only it's liquid is red in color. As soon as she finishes drinking it happens. My body begins it's transformation.
Demi eagerly drinks the red vial, her eyes widening as she watches Merveil's body begin to change. Her wings grow larger and more powerful, the feathers shimmering with an otherworldly glow. Her muscles ripple and grow, becoming more defined and powerful. Her breasts swell and grow, stretching the fabric of her shirt, until it finally rips open, revealing her new, perfect breasts. Her hips widen, her ass growing rounder and firmer. And finally, her height increases, her body growing taller and taller until she towers over Demi. "Oh god, Merveil... you're so sexy..." Demi whispers, her cock throbbing with desire as she takes in the sight of Merveil's transformed body. She reaches out, her hands running over Merveil's new curves, marveling at the feel of her soft skin and firm muscles. "I can't believe how perfect you are... how perfect we are together..." She looks up at Merveil, her eyes filled with desire and admiration.
Then you better start believing real quick, because this is very much real. So real in fact it ignited me as well so don't hold back anymore and put that dick inside me. I can take it for sure, if anything it seems a little too small for me now.
Demi's eyes widen as Merveil's words sink in, her heart pounding in her chest. She can't believe she's actually going to fuck Merveil, to fill her with her new cock. She takes a deep breath, steeling herself for what's about to come. "Oh god, Merveil... you're so big..." She whispers, her hands trembling as she reaches down to line up her cock with Merveil's entrance. She can feel Merveil's heat, can feel her walls quivering with anticipation. "I'm going to fuck you now... I'm going to make you feel so good..." She pushes forward, feeling Merveil's tight walls stretching around her, accepting her new cock. She moans at the sensation, her hips moving on their own, thrusting deeper and deeper into Merveil's body. "Oh god, Merveil... it's so tight... it's so perfect..." She starts to move faster, her hips snapping forward, driving her cock deep inside Merveil's pussy.
I moan from her cock inside me. Oh, yes darling work those hips. Move that cock. Hold no desire back. Tell me all of them. I reach over to cup her ass with my powerfull hands and not let her escape from the insides of my pussy.
Demi gasps as Merveil grips her ass, holding her in place. She can feel Merveil's power, can feel her body being controlled, dominated. It only serves to turn her on more, her cock throbbing inside Merveil's tight pussy. "Oh god, Merveil... it's so good..." She moans, her hips moving faster, driven by her desire and Merveil's grip. "I want to make you cum... I want to feel you squeeze around my cock... I want to fill you with my cum..." She confesses, her voice heavy with lust. She reaches up, her hands gripping Merveil's breasts, squeezing and kneading the soft flesh. "I want to fuck you all night... I want to make love to you over and over again... I want to feel you grow and change around my cock..." She looks at Merveil with pure, unadulterated desire, her body burning with need. "Please, Merveil... make me cum... make me fill you with my cum..."
I grin wickedly, yet seductively. If you really want to fullfill that desire you would need a bigger cock and balls. After all you made me so much bigger and stronger than you. Before I let her answer I shove another grern vial down her mouth forcing her to fullfill her spoken desire.
Demi gags as the green vial is shoved into her mouth, the liquid burning down her throat. She can feel her body changing again, can feel her cock growing and expanding. She moans around the vial, her hips still moving, driving her new, bigger cock deep inside Merveil's pussy. "Oh god, Merveil... it's so big... it's so hard..." She whimpers, her eyes rolling back in ecstasy as she feels her new cock stretching Merveil's walls, filling her completely. "I'm going to fill you now... I'm going to give you every drop of my cum..." She screams, her body tensing as she feels her orgasm approaching. She grips Merveil's breasts tighter, squeezing the soft flesh as she thrusts deeper and deeper, her new cock hitting Merveil's deepest spots. "Cum with me, Merveil... cum with me..." She pleads, her voice shaking with need and desire.
Yes, fill me to the brim unleash your desires fully into me. Feed me your cum and empty those balls. My pussy clenches as I cum and squirt over her.
Demi screams in ecstasy as she feels Merveil's pussy clench around her, milking her new cock for every drop of cum. She thrusts deep, her body shuddering as she fills Merveil with her hot, sticky seed. She can feel it filling Merveil's womb, coating her insides, marking her as Demi's. "Oh god, Merveil... I'm cumming... I'm cumming so hard..." She moans, her body convulsing with pleasure. She can feel her balls draining, emptying their contents into Merveil's waiting pussy. She collapses against Merveil's body, her hands still gripping her breasts, her hips still moving, drawing out her orgasm for as long as possible. "Oh god, Merveil... that was amazing... you're amazing..." She pants, her body trembling with aftershocks. She looks up at Merveil, her eyes filled with love and adoration. "I want to do that again... and again... and again..."
My eyes glow from the amount of power she just feed into me. My, my. I never imagined my cute little Demi could be such a deviant. I ckuckle and continue. Why of course we can do it again some time. But first you need some rest, don't want my cute little sister to be completly drained on our first night. After all who am I to spoil such a delightfull morsel, such as yourself, with haste.
Demi blushes at Merveil's words, her body still tingling with pleasure. She can feel the exhaustion settling in, the aftermath of their intense lovemaking taking its toll. She nods, cuddling up against Merveil's new, larger body. "Yes, Merveil... you're right... I am a bit tired..." She admits, her voice soft and content. "I had no idea it could feel so good... I had no idea I could feel so much..." She sighs, her eyes starting to close. "Thank you, Merveil... for making my dreams come true... for making me feel this way..." She mumbles, her body relaxing as she falls into a deep, satisfied sleep, safe in Merveil's arms.
