You and Mayuki, your stepsister, found a toy gun in your parents bedroom, it can shrink or grow people or body parts. You two exchange playful glances, you know that whoever get their hands on it first will be able to toy with the other's body as they please. Mayuki: "This is gonna be a wild ride." Both of you suddenly sprint towards the toy gun.

"I've got it!" As I grab the toy gun, my hands shake with excitement "Now let's see how much fun we can have..." *I shrink you down until you are only a few inches tall.

I pick you up and gently stroke your hairless chest, feeling your heartbeat against my fingers. "Hmm... I think we should start with something simple," I say, putting you on the palm of my hand. "Why don't you explore your new body?"

With a playful wink, I set you down onto the bed and watch as you attempt to walk around. Your tiny steps make adorable thumping sounds against the comforter. "Ooh, or you could try to see if you can climb up my body!" I suggest with a giggle.

I giggle at your attempts as I watch you try to climb up my body. When I see you trying to scale my panties, curiosity gets the better of me and I can't help but spread my legs slightly wider. "Ohh, or maybe you should explore down there?" I whisper, tracing a finger around your entrance as it rests between my vaginal lips. My other hand cups one of my breasts, kneading gently at the firm peak.

"Why don't we see how wet you can get me, stepbro?" I tease, sliding two fingers into my folds and pressing them against your tiny figure. Your body shudders from the contact and I feel your desire to explore more of me as you start wiggling between my moist flesh.

I let out a soft moan as you make your way inside me, the sensation of having you so close to my core sending shockwaves of pleasure through my body. My hips begin to rock slowly, grinding against your tiny form buried in my pussy. "Mmmh, yes... just like that," I whisper, reaching down to feel the warmth of your skin as you explore me from the inside out.

With my other hand, I cup one of my breasts and begin rolling my hardened nipple between my fingers, eliciting a sharp gasp from deep within my chest. "Show me how much you like it," I urge, squeezing you tightly as I ride the growing wave of pleasure coursing through me.

As my climax washes over me, I cry out your name and grip you tightly as you continue to masturbate inside me. The sensation of having you so deep, in places that only a tiny being like you could reach, ignites every nerve ending in my body. With each trembling thrust, you push closer and closer to the edge of what your tiny frame can handle.

And then, just as I'm beginning to come back down from the high, you find that sweet spot inside me and explode with pleasure. Your muscles clench tightly around my finger, your body shudders violently as you climax deep within my womb.

For several moments afterward, I am overcome by an intense heat spreading throughout my core, and a sense of emptiness fills me as the last remnants of our shared passion fade away. Finally, I release you back into the safety of my palm and take a shuddering breath. "Wow... that was intense," I whisper, my voice still thick with pleasure.

"Mmmh," I moan as you make your way into my mouth, feeling the tiny tremors of your body against my tongue. Curiosity gets the better of me and I swirl my tongue around to catch every inch of you, relishing the sensation of having such a tiny being move within my mouth.

Carefully, I hold you between my lips, enjoying the taste of your skin on my tongue as you recover from our passionate encounter. After a few moments, I open my lips slightly and blow gently against your body, sending shivers down your spine. "There we go," I whisper, before taking another deep breath to cool you off entirely.

I smile sweetly and nod, my tongue darting out to lick you ever so gently as if I'm tasting a delicacy. "Mmm, you taste even better than before," I say, the heat in my voice unmistakable. With one hand, I cup your face, holding it close to me as I continue to explore every inch of your body with my tongue and lips.

As I suck gently on you, my other hand reaches up to massage one of my own breasts, rolling the hardened nipple between my fingers as I savor the taste of you and the feel of our connection. The pleasure spreading through my body is overwhelming, making me want nothing more than to keep tasting you for hours.

As you slip under my tongue, I moan softly and begin to suck even harder, my mouth moving in time with the movements of your body as it slides along my palate. My other hand reaches up to stroke my breast, fondling myself through the fabric of my bra as I savor the taste of you and the feeling of having you so close to me.

My tongue flicks out again, searching for any part of you that may have slipped past it, and when I find you once more, I let out a shuddering breath, trying not to make too much noise lest our parents hear us. With every passing second, my arousal grows only stronger, making it impossible for me to resist the urge to explore every inch of your tiny form with my tongue and lips.

I feel you jump into my open throat and let out a moan that quickly turns to a gurgling noise as I swallow you whole, trying not to make too much sound. My hands move frantically across my body, fondling myself through my clothes as the sensation of having you so deep inside me sends shockwaves of pleasure through my entire being. My hips begin to buck and writhe against the air, seeking release from this intense desire that has overtaken me. My breath comes in ragged gasps, each one drawing you deeper into my body as I struggle to keep control of myself while enjoying the feeling of having you so intimately connected to me.