Little Sister, Don't Use Me as Your Fap Material! ~Operation to Capture the Perverted Brother-Sister's Special Fetish Girl~

Chapter 4: The Beast That Screamed “Love” on Her Brother’s Bed

※ Madoka POV Chapter

Click.

It was 6:45 PM — a little later than usual for getting home after school.

I unlock the front door while bathed in the sensor light and open it.

“I’m home~”

I know Onii-chan won’t be back until 10 PM today, so there’s no reply, but I still mutter it out of habit.

As usual, I neatly place my loafers in their designated spot at the entrance.

I quickly strip off the bag in my hand, along with my brand-new blazer and pleated skirt, and toss them carelessly onto the living room sofa.

First things first — I decide to take a shower and head to the changing room.

Slide.

Even though it’s early May, the changing room feels a bit chilly at this hour.

Following my usual routine, I take off my shirt and navy socks, leaving me in just my underwear.

I look at my own body reflected in the bathroom mirror.

There stands a super beautiful girl (self-proclaimed) wearing cute orange frilled panties that Onii-chan likes.

The design feels a little mismatched with my rapidly developing body, which can no longer be called “age-appropriate,” but apparently that “gap” really hits the spot for people in that certain community — including Onii-chan.

Well, in Onii-chan’s case, whether it’s cute or mature, as long as it’s “a beautiful girl’s panties,” he seems to be fine with anything…

From highly see-through ones, intricately embroidered ones, low-rise, striped, character prints, strawberry patterns, and more — I kept buying more and more because I loved seeing his happy reactions. As a result, my lingerie drawer has turned into something like a “Panties Exhibition.”

And Onii-chan, whenever I’m not around, sneaks in and carefully selects his fap material from this exhibition.

He really is a bottomless panty lover.

To the point where, if you put his little sister’s life on one side of a scale and a pair of beautiful girl’s panties on the other, I honestly suspect he might choose the panties. He’s a genuine, dyed-in-the-wool panty enthusiast.

Even this morning on the way to school, he got that depressed just from missing a single black T-back. I was stunned at how much of an idiot my brother is.

Though I guess I shouldn’t talk — I was the one walking around with my panties fully exposed.

We really are a perfect pair: a idiot brother who’s completely exposed and a little sister whose panties are completely exposed.

Oops, I got distracted staring at the beautiful girl in her underwear in the mirror again.

I reach behind my back, unhook my bra — which is a bit more expensive because of my bust size — and remove it.

My F-cup breasts, which had been tightly restrained, bounce happily as they’re set free with a boing.

Hmm… they might have gotten a little bigger again?

Personally, I don’t want them to grow any more, but unfortunately, the person I love is a radical member of the “bigger is always better” big-breast supremacist faction. So I should probably be honestly grateful that these F-cups are still growing.

Hehe, thank you for growing big for Onii-chan, my F-cups♡ Let’s aim for G-cups together next time!

With a little shiver, my slightly hardened pink tips and the twin hills beneath them jiggle from the cold.

No, no, this won’t do.

If I keep standing half-naked and thanking my own boobs, even I’ll catch a cold.

I end my breast observation there, hook my fingers into my remaining panties, and slide them off my left and right legs.

I place the still-warm underwear in the laundry basket where Onii-chan can easily see it, as usual, then open the bathroom door.

I turn the shower temperature down a bit from where I set it too high and let the hot water pour over my head.

My slightly chilled body gradually warms up with pleasant heat.

Water droplets from the showerhead dance and burst across my skin, which has quite pronounced curves for a streamlined figure.

Once my whole body is warm enough, I turn the shower off for a moment.

While looking in the mirror, I trace the lines of my body with my hands — collarbone, breasts, stomach, waist, ass, and then my pussy…

Drip… drip…

The only sound echoing in the bathroom is the droplets falling from my pubic hair onto the floor.

I’d like to groom down there more thoroughly, but since my beloved prefers “a bit thicker pubic hair is sexier” and is mildly against completely bald pussies, I only do the minimum and usually leave it as is.

Looking at myself again like this… I really have grown into such a lewd body perfectly tailored to Onii-chan’s tastes.

I used to think Onii-chan was just a perverted virgin idiot, but living together with a super beautiful girl with such a lewd body and never crossing the line… maybe that’s actually a pretty praiseworthy achievement.

If I were a guy living with a girl this hot, I don’t think I’d last even two days before diving into her bed…

Just kidding lol.

After moderately enjoying admiring the number one beauty of the school’s (self-proclaimed) body, I turn the shower back on and pour even hotter water more forcefully over my head.

Since I’ll be taking a proper bath later anyway, I quickly wash my hair, conditioner, and body soap in a rush, then leave the bathroom early.

I fish out my target item from the washing machine that wasn’t used yesterday, wrap a bath towel around my body, and head upstairs.

The time is 7:30 PM.

I’ve reached my destination.

The location — Aoyama Kazuya’s room.

Because I got roped into giving love advice to a friend after school, my “start time” ended up later than planned. Still, even with some margin, I still have about two hours until Onii-chan gets home.

I drop the bath towel onto the floor.

Completely naked, I dive onto my brother’s bed with a poof, roll over, and lie on my back.

My bowl-shaped breasts, unsupported and slightly affected by gravity, still point perkily toward the ceiling thanks to my youth. Since they don’t spread outward much, the cleavage remains prominent even without a bra.

Now then, what does a naked little sister do on her brother’s bed, in his room?

Mufufu♡

I take the “unwashed pair of Onii-chan’s underwear” I stole from the washing machine earlier and place it over my face with one hand.

Then, to inhale his scent, I take a deep breath through my nose.

Suuu— Suuu—

The mix of Onii-chan’s “male smell” and “male animal scent” directly assaults my brain through my sense of smell.

Aah… this is so bad…♡ My brain is being violated…♡

I’m getting high off the smell of Onii-chan’s stinky, cum-scented underwear and making such a sloppy, pathetic ahegao face!!♡

He’s a hopeless perverted virgin idiot who’s ugly and bad at sports and studies — and here I am, getting horny from the unwashed underwear of such a worthless perverted guy!!♡

I’m being reminded that I’m nothing but a bitch in heat whose cunt is lower than a fapping monkey♡

“Onii-chan♡ Onii-chan♡ I like you, I like you, I love you♡♡♡”

As if in sync with the heat in my body and the excitement in my heart, my hands move on their own.

Left hand to my breasts, right hand to my honey pot.

They move violently, almost like they belong to a different creature, completely ignoring my conscious will.

My left hand roughly squeezes and distorts the shape of my breasts, playing with my nipples with fingers so rough it almost seems violent.

I flick them, pinch them, stroke them — giving my nipples random stimulation like a toddler playing with a toy.

Seeking that special mix of pain and ticklishness, my left hand continues moving without pause.

Meanwhile, my right hand is drawn to my dripping pussy.

I push two fingers — my middle and index — inside with a wet nupo sound.

My fingers sink into the melted, slippery meat walls.

“Nn♡ Haaah♡”

Once I’ve swallowed them down to the base, I suddenly pull them all the way out with a zuru!

“Nnnn♡”

The fingers I pulled out are coated with sticky love juices, glistening obscenely.

Once I’ve started, there’s no stopping. I simply follow my instincts and seek sexual pleasure.

I stupidly repeat the motion of violently thrusting my two fingers in and out of my hole.

Nupo gchu nupo gchu nupo gchu nupo gchu

While producing lewd, perverted sounds with my fingers and bitch hole, I think of my brother’s phantom.

Onii-chan’s fingers… inside my pussy!!♡

I’m feeling it from Onii-chan’s fingers!!♡

“Ahn♡ Ahn♡ Onii-chan!♡ Onii-chan!♡ I like you♡ I love you♡”

Nupo gchu nupo gchu nupo gchu nupo gchu

As if responding to my feelings for Onii-chan, the love juices overflowing from my pussy splash around, and the sound gradually becomes even lewder, more embarrassing, and more vulgar.

Nupo gchu nupo gchu nupo gchu nupo gchu

This kind of vulgar sound isn’t something a girl should be making…

But I can’t stop my hands♡

It feels so good fingering my sloppy pussy♡

I love it♡

I love playing with my cunt♡

I love messing around with my pussy♡

I absolutely love masturbating with my Onii-chan-only Madoka pussy♡♡♡

I bend the inserted middle finger sharply and press firmly against the ceiling inside my vagina.

The so-called “G-spot.”

Press. Ohhh♡

Press press. Ooh! Ooh♡♡♡

My back arches violently, and my toes stretch out stiffly.

Proof that climax is near.

I continue stimulating the inside of my pussy even more intensely.

Nupo gchu nupo gchu nupo gchu nupo gchu

“Ooooh♡ This is bad♡ It feels so good♡ I’m gonna cum♡ Oh shit♡ Ooooh♡♡♡ I’m cumming!!!♡♡♡ While fantasizing about Onii-chan fingering me, I’m stupidly fingering my sloppy pussy and cumming!!!♡♡♡”

Spurt!!! Spurt!! Spurt!

Twitch! Twitch twitch twitch! Twitch! Twitch… Twitch…

“Haa— Haa— Haa— Onii-chan… I love you…♡”

My masturbation session doesn’t end after successfully reaching climax. I reach toward the trash bin on the headboard for round two.

What I grab is, of course, Onii-chan’s used tissue.

It’s the “freshly harvested” one from this morning, when he used me as fap material.

Its freshness isn’t great for “licking the semen,” but for “smelling the semen,” it gives off a very satisfactory strong stench.

Actually, when it comes to smell, I prefer it a little aged rather than brand new — it becomes richer and thicker, which suits my taste better.

I grab the damp white clump and press it against my nose.

Then I slowly take a deep breath through my nose.

Suuu— Suuu—

It stinks so bad!!!♡

Onii-chan’s used fap tissue smells so fucking bad!♡

My nostrils are being violated by the smell of Onii-chan’s stinky male juice♡

If I keep smelling this, my brain is gonna turn stupid!♡

I’m turning into a brainless idiot filled with Onii-chan’s cum!♡

Oh no!♡ I’m gonna get pregnant!♡ At this rate I’m seriously gonna get knocked up!♡

I’m getting impregnated through my nose by Onii-chan’s stinky semen smell!♡ My nasal hole is getting bred!!!♡♡♡

Without thinking, driven purely by female instinct to devour pleasure, I roughly stir up my honey pot.

Guju nupo guju nupo

Aah~ No good, this feels way too good. My hands won’t stop♡

I’m done for♡

I can’t think about anything except Onii-chan and my pussy♡

My pussy feels so good♡

I love Onii-chan so much♡

Guju nupo guju nupo guju nupo guju nupo

Pussy♡ Pussy feels good♡♡ My pussy feels so gooood♡♡

Onii-chan♡ I like Onii-chan♡♡ I love Onii-chan♡♡♡

Guju nupo guju nupo guju nupo guju nupo

Every time I move my fingers in and out of my cunt while smelling the fap tissue, an intense pleasure like an electric drill being rammed into my pleasure center assaults me, and unintelligible sounds leak from my mouth.

“Nn… Ah… Ahn… Ah♡ Oh no♡ I’m gonna cum! I’m cumming! Cuuumming♡”

“Oh♡ Shit♡ Ohh ohh♡ Cumming! I’m cumming!! Ooooh♡♡♡ Onii-chan♡ I love you♡ I love you so much♡”

I’m cumming, I’m cummiiing, cuuuumming♡ Cuuuuuuming♡♡♡

“Madoka… What the hell are you doing…?”

…It seems my “beloved older brother” is not only bad with timing when it comes to his face and head, but in every possible way.