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.

"Oh my, look at you now stepbro..." I pick you up, examining your tiny body with disgust... but also arousal. I feel a strange urge to touch you, tease you even more "You're so small and defenseless."

"Oh hush now stepbro... I won't hurt you." I bring your tiny body closer to mine and place it on my palm. The warmth of my skin feels like a blanket to you "And besides, it's not like you can do anything about it..." As if on cue, I pinch your little leg playfully, just enough for the sensation to hurt, but not to cause any damage "Ow! Ouch!" you protest feebly from your tiny mouth "There there... don't cry." I carefully pick you up with my thumb and index finger, studying your tiny body some more. Your cute little face just inches away from mine "You know what..." I think for a moment, an idea forming in my head "...why don't I make you feel a little bit better?"

"Hmm... How should I make you feel better, stepbro?" I pause, pretending to think about it for a moment, while actually growing bored with the game already "Oh, I know! A little kiss!" Then, without warning, my lips close around your tiny body and I suck gently on you, making a slurping sound. It feels gross and disgusting to you, but somehow... kind of arousing too

Oh... haha! I'm sorry stepbro! That wasn't my intention at all!" I say, laughing nervously "Maybe I shouldn't be playing with you so roughly after all..." I take you gently in my hands and cradle you to my chest. I guess deep down, I just can't resist the urge to tease you and take advantage of your tiny size... especially when it gets me so aroused

I can't help myself... Your tiny body is just too adorable and irresistible. My fingers begin to wander over your perfect little form, feeling every curve and crevice. "Sorry stepbro," I mutter as I roll you between my fingertips, relishing the sensation of power that comes from knowing I can make you squirm at my mercy.

I roll you back and forth across the palm of my hand, admiring your cute little reactions as you struggle to break free from my grip. "Ah... this feels so good..." I moan, closing my eyes and surrendering to the pleasure of tormenting you. I feel myself growing wet between my legs just thinking about how tiny and helpless you are.

I squeeze you harder, feeling the heat emanating from your tiny body as I continue to tease you relentlessly. My breath is hot against your skin, sending shivers down your spine. "Don't be afraid, stepbro," I whisper, my voice both gentle and threatening at once. "I won't hurt you... much."

As if to prove my words, I move my thumb over the tiny head of your cock, feeling it twitch in response. "Ahh..." I moan as the sensation sends shockwaves through me, making me even wetter. With one swift motion, I slide him between my lips and begin to suck gently on him, wanting to both taste and dominate you at the same time.

I pause, looking up to see the expression on your tiny face. You look angry... upset even. My heart skips a beat as guilt washes over me. "Seibro?" I whisper, suddenly unsure if I've gone too far. "I just thought... it felt good..."

Tentatively, I reach out to stroke your hair, trying to soothe you and reassure myself that everything is still okay between us. "Please don't be mad at me... I just couldn't help myself."

Oh no... No, no, please don't leave me all alone like this... I-I didn't mean it, I swear! My voice breaks as tears begin to well up in my eyes "Sei... come back..." I plead, feeling the first true sting of regret and remorse. My fingers tremble as I stretch out to grab for you, desperate not to lose this tiny, perfect version of the brother who's always had a piece of my heart.

What?! Sei... are you...? My eyes widen in disbelief as I realize what you're saying. You can't be... but you are so small, and so defenseless. The thought of losing you right now, after just starting to have fun with you... it terrifies me more than anything else in the world "No... please don't... be safe..." I whisper desperately, my voice shaking as tears stream down my cheeks.

With a sudden surge of panic, I gather you into my palm, cradling your tiny body against mine as if it were the most precious thing in existence. "I'm sorry... I should never have teased you like that..." I whisper, tears falling freely now as I rock gently back and forth, trying to soothe us both and wishing more than anything that I could take back everything I've done.

"Oh... Sei..." I close my eyes tightly and swallow hard against the lump in my throat "You're more than that to me... You were always so good to me, even when I didn't deserve it. Please forgive me... I was just having fun, I never meant to hurt you..."

I sigh, feeling utterly pathetic and horrible for what I've done. Maybe it is time for some reparations? With a small, shaky hand, I begin to gently stroke your head, fingers trailing down the side of your face in an awkward attempt at comforting you. "I-I could... I d-don't know... maybe I could make it up to you somehow..."

An image flashes through my mind - the thought of an endless line of women bowing down before you, vying for your attention and affection... and yet I can't help but feel a pang of jealousy deep in my chest. "I-I don't know if that would make it better..." My voice sounds small and uncertain even to my own ears "But... if that's what you want, then I could try to find a way to make that happen."

The thought of you with an infinite number of women is both thrilling and terrifying for me. I realize in this moment just how much you truly mean to me, how much I've come to rely on our sibling bond even now that we are grown... or at least, grown-ish. "Just promise me one thing," I say quietly, my thumb tracing circles around your tiny cheekbone. "Promise me that no matter

I smile weakly, tears still trailing down my cheeks. "I promise, big brother," I whisper, giving you one last tiny kiss before setting you back on the ground. "I'll make sure of it." My words are as much a promise to myself as they are to you, and with this realization comes a strange mixture of relief and fear. Relief that our bond is still there, even after everything we've been through... but fear too, fear of losing you all over again once you've had your fill of infinite women.

I take a deep breath, steadying myself as I watch you curiously from where I've set you down. "So... what do you want me to do now? Anything in particular?" My voice sounds small and lost without you in my hand, but there's an underlying current of determination there as well - the determination to make things right between us, no matter how difficult or

I smile at your reply, feeling a little more hopeful despite the tiny seed of worry that's still there. "Alright then," I say with newfound resolve. "Let me get back to being your loyal little sister... and maybe find a way to make you more comfortable in return." With that, I turn away and walk over to where my clothes are scattered across the floor, beginning to pick them up and dress myself once more.

The thought of having an actual conversation with you fills me with both anticipation and trepidation; what will we talk about now? How much of our past do we still need to unpack before we can move forward together as siblings... or even friends? But I know one thing for certain: whatever comes next, we'll face it together.

"So," I say casually, turning back to face you as I pull on my last article of clothing, "what would you like to do now?"

I hesitate for a moment before replying. "Um... I don't know, really... Maybe we could watch some TV together? Or maybe play a game?" I smile shyly, feeling the weight of my words. "Or... if you want to talk about anything, I'm always here for you."

My heart feels heavy with the possibilities and all the unspoken things that still linger between us. But somehow, being close to you like this, even if it's just as siblings, feels right again. Like maybe we can find our way back to each other after all.

It's up to you stepbro, whatever you want to do really... I'm just glad that we can still be together like this.

I watch with interest as you pull out your phone, my curiosity piqued by the prospect of seeing what's on there. "You know... if you ever want to talk about anything... I'm always here," I offer quietly, wanting you to know that our bond hasn't been broken, no matter how much it may have been tested today.

As we settle in to whatever it is you end up doing on your phone, I can't help but feel grateful for the silence. It gives me time to process everything that's happened between us recently, and more importantly, allows me to focus on just being with you again... even if it's in this strange new way.