My Little Sister Is the Best F*p Material - Volume 9 Chapter 03: A Sister Who Absolutely Obeys Her Brother’s Orders, No Matter How Much She Hates Them

Volume 9 Chapter 03: A Sister Who Absolutely Obeys Her Brother’s Orders, No Matter How Much She Hates Them

Even though the peak of summer has passed, sunny days still make sweat bead on my forehead while walking. After school, the asphalt retains the sun’s heat, and I wish for the cool autumn breeze as I tread through the quiet residential streets, where not even the rustle of leaves breaks the silence.

“Preparations are ready. Come home anytime.”

Checking the message on my phone, I quicken my pace toward home. My eager steps grow wider, but the lust meant to be burned off through exercise lingers. By the time I reach the house, my pants are bulging embarrassingly.

(Here we go…)

It’s been a long road. That day I learned about Miyu’s lolita hobby, she punched me in the gut so hard I nearly passed out. When I asked to lick her pussy as an apology, she rejected me more fiercely than swatting a bug.

It’s not like I was obsessed with licking. But after she’s sucked my cock so much, the fact I’ve never tasted my beloved’s pussy left a nagging unease, amplified by that exchange. Her stubborn refusal only fueled my curiosity about her smooth, plump puni-man.

“Alright.”

I steel myself and grip the doorknob. Beyond this door waits my panty-less sister in loli-cos, ready to let me lick her.

Opening the door, cool AC air brushes my sweaty skin.

“I’m home.”

My greeting is aimed at the lone figure waiting in the entryway.

“W-W-Welcome home, Onii-chan.”

Hands clasped, back straight, Miyu glares with a mix of tension and murderous intent before bowing. As she rises, her loosely curled twin-tails sway with the lace ribbon on her headband.

Her white shirt forms tight “breast bags,” spilling from the open-front dress, contrasting her cinched waist. Her red-painted lips and glossy, flawless nails—honed by her cosplay hobby—captivate me instantly. But neither her adorable face nor her voluptuous chest in the costume steals my focus most.

She’s wearing thigh-highs with a garter belt, despite my no-panties order. Miyu wouldn’t break a promise, so if I’m right, her pure white, hairless pussy is framed by the lace straps and stocking tops, hidden under her skirt.

Gulp… My cock rages, straining my already tight pants.

“You’re cute, Miyu. So beautiful.”

“I-Is that so?”

She tries to stay composed, but the thought of what’s coming makes it hard to stay calm. Her fingers tremble as they grip her skirt.

“A-As… p-per your request… today, I’ve reduced the clothing… under my skirt…”

Voice faltering with nerves, she lifts her skirt before me. She holds my gaze with a fierce stare until the final moment.

“Please… lick my pussy… as you like…”

Dropping her eyes to the floor, her face flushes red through her makeup. For Miyu, baring her hairless vulva is the ultimate humiliation.

Like a butterfly drawn to a flower, I lean in, nostrils flaring, gazing at her flawless, poreless slit.

“Suu… haa… Miyu, here… it’s so beautiful in the light…”

It’s stunning. Fragrant. Framed by the garter belt like a painting in a gallery. I hesitantly touch its precious surface.

“U… uu…”

Holding up her skirt, Miyu’s legs quiver at my touch. If I slip a finger into her slit, it’ll probably gush like a broken egg.

“Your stomach… thighs… butt… all so white and smooth… fuu… aah… so fragrant…”

I bring my nose to her skin, inhaling her scent like a drug. Her shyness makes her smell of body soap everywhere—she must’ve scrubbed meticulously in the bath to hide her natural scent, knowing I’d examine her closely. Her earnestness alone turns me on.

“Nn… Onii-chan, you’re like a pervert, it’s super creepy…”

“You’re letting that pervert sniff your pussy.”

“S-Stop…! Don’t say that…!”

She presses my head through her skirt. I want to lick and taste her juices directly, but just savoring her scent nearly makes me cum, so I reluctantly stand.

Tears well in her eyes, but her makeup’s tear-swollen under-eyes only enhance her allure, like an erotic accessory.

What brother wouldn’t turn perverse with such a sexy sister?

I don’t think there’s one.

“I’m gonna clean up. Then I’ll feast on what’s waiting in your vagina.”

“Do as you please. I’ll have a towel ready, so take your time purifying yourself until midnight.”

With polite defiance, Miyu erases her consciousness, using sharp words to cope with her shame. I head to the bathroom with her, stripping boldly to flaunt my raging cock. Seeing it nearly touch my stomach, a sadistic urge sparks.

“Can you clean this part with your mouth?”

My cock, sweaty and dripping with precum, isn’t clean. That’s why I want pristine, dolled-up Miyu to suck it clean.

“I have no choice but to obey.”

Glancing at my lively erection, she mutters, “If you’re that hard, you don’t need me to lick you,” before kneeling.

“Hamu… juru… chuu, chupu…”

Holding my cock’s base with her fingertips, she takes half the shaft in her mouth, glaring up at me while sucking. When was the last time she blew me with such a resentful look? It reminds me of old Miyu, and I’m thrilled again.

“How’s it feel? Fully hard now.”

“Nmu… juru… chupa… nn… sweaty, pissy… helo… salty… haamu… nn, jururu, juppa… mixed with the raw, bitter precum…”

She extends her tongue, licking up my shaft, balls, and groin, then takes my cock deeper.

Ngu… gupo… juru… nn… jururu, jubu… “Making your sister go panty-less in loli-cos… to lick her pussy… nmu, chu, chupu… the worst brother’s scent… ngujubu… jurururu… jugu, jupa… juburu…”

Sucking while venting her anger, she glares up with piercing eyes.

Her voice drips with resentment, yet her tongue’s caresses are gentle. Her voluminous lashes and subtle colored contacts make her already large eyes stand out more. The fact that my sister’s in loli-cos, sucking me off to excite me, nearly pushes me to cum.

“Fuu… ahh. Good job, Miyu. It’s nice and clean. I’m happy you’re such a good sister.”

“…You should’ve just cum.”

Noticing I was close, she tosses a snarky remark. Her polite yet rough treatment hits my groin hard. Before I cum from her words alone, I head to the shower.

I wash quickly to keep Miyu’s erotic heat alive, take the towel she offers, and dry off fast, even my hair. She watches blankly.

“How’s this erection? Getting you in loli-cos was worth it, huh?”

“Hmph. Sure. It’s quite impressive. A thoughtless size, inconsiderate of your sister’s petite frame. I don’t like it one bit.”

She brushes me off coldly, uninterested. What a harsh reaction. That she loves me despite this makes a woman’s heart a mystery.

“Since you’re purified, this way.”

She opens the bathroom door, leading me upstairs. Sadly, peeking up her skirt doesn’t reveal her panty-less slit, so I channel that frustration into the upcoming clit-licking.

She waits by my room, clears her throat, and looks away as I catch up.

Opening the door, she guides me into a moody, candlelit space. A faint aroma calms my nerves with each deep breath.

“What’s this?”

“Your sister worked hard to set this up for you.”

“I see.”

I flick on the ceiling light and throw open the curtains.

“Ah, aah…! How cruel! I worked so hard…!”

“You made it dark to hide your pussy, didn’t you?”

I blow out the candles, move them aside, and consider opening the window but stop, knowing she can’t muffle her voice.

“Mugu… I wore the cosplay properly, didn’t I?! Your thing’s already harder than before!”

“That’s a different matter. Stand there and lift your skirt. Keep stalling, and I’ll make you do it tomorrow too for breaking the promise.”

“Ugh… you’re so mean… stupid…”

Lips pursed, unable to defy me, she enters and faces me. Gripping her skirt, she lifts and lowers it repeatedly, takes a hyperventilating breath, and finally raises it enough to show her slit.

“Onii-chan… please, lick your sister’s pussy…”

Once said, she’ll let me do it. Seeming to adjust to baring herself, she exhales, as if saying it’s my turn now.

“Then I’ll indulge to my heart’s content.”

Kneeling before my goth-dress-clad sister, I, naked, bury my face in her crotch. Compared to early summer, my body’s like it’s been forged in a gym—not from intense training but from repeated sex with Miyu and Yamamoto-san. Yamamoto-san’s prophecy came true. With my fully restored cock, I’m like a demon with a club to petite Miyu. Keeping that beast ready, I delicately tickle her navel with my tongue first.

“Ah, an…! W-Wait, not there…!”

Her abs twitch at the sudden touch. She expected direct cunnilingus, but it’s not just that I’ve been restricted from. This sensitive sister hates any touch—fingers or tongue—anywhere, even from her lover.

Today isn’t just about tasting Miyu’s pussy—it’s about savoring every inch of her body. She’s let me suck and grope her boobs, but her lower half? That’s a fortress she doesn’t surrender easily.

“Nmu… helo… haa… Miyu…”

Licking her navel, teasing her womb through her soft flesh, I skip her vulva and glide my tongue to her thighs.

“Ah, ah, stop it…! Not there… nn… hey…! Don’t lick… the inner part…!”

Miyu tries to resist by pressing her thighs together, but with her hands forced to hold up her skirt, that’s her only defense. I lap at the tops of her thigh-high stockings, slip my tongue under her garter belt, and caress from her thigh’s base to her hips meticulously. Despite her complaints, she doesn’t flee, panting heavily and writhing in pleasure.

“No, no, please… stop…! Lick my pussy as much as you want, just stop that… n, nn… hia…!”

Every part of her tastes delicious. Her scrubbed skin smells amazing, and for the first time, I truly feel what it’s like to taste a girl. Maybe today, this moment, I’ve finally shed my virginity.

“This is crazy… just licking your legs makes me wanna cum…”

“Uuu… you’re such a pervert, Onii-chan… nn, nnn… ah… ugh…”

My words at the entrance planted the idea that she’s letting a pervert lick her. The more I get perversely excited, the more her shame intensifies.

“Nmu… njuru… pero pero… nmuchu… ah.”

And then it spills. Her love juices, sealed tight without an opening, ooze from her slit, dripping to the floor in threads.

“Miyu, it’s a waste. Can you tighten your vagina’s entrance to keep it in?”

“I don’t even know how to do that…”

She tries to comply, and faint muscle twitches show in her pristine crotch. But it backfires—clenching her entrance tightens her inner muscles, squeezing out even more juices.

“This is too much… I’m dying of embarrassment… please, just lick it and be done…”

Her fixed twin-tails droop as she pleads. A brother who ignores such a request is a failure. I zero in on her slit, inching my tongue closer.

“Nn, nn, ah… that licking… ah, ah…!!”

I don’t dive into her inner lips yet, tracing her groove from end to end, savoring her juices and reactions. From below her clit to near her butt, I slide my tongue just shy of parting her. Her thigh muscles twitch; she’s barely standing under this pleasure.

“Don’t lick so lewdly… nn, an…! Stick your tongue in messily already…”

She sways her hips, urging my tongue inside. Does she realize how lewdly she’s moving, holding up her skirt? Getting her mind blown by orgasms might be easier for her, but I want to see her writhe in humiliated pleasure.

So I don’t lick inside yet. I lick her pussy but avoid her vagina. Despite her body being a full-on erogenous zone, her vagina’s her weakest spot, where her rationality crumbles fast.

“Miyu, one more request.”

“What? What awful thing are you making me do now?”

“Peel back your clit’s hood with both fingers and let me lick it.”

“You’re a monster…!!”

No matter how cruel, she promised to obey. Glaring like I’m her mortal enemy, she bites her skirt, peels her clit’s hood with both fingers, and exposes the pink bud to me.

I cover it with my lips, chuu, sucking and flicking my tongue like tentacles. Her hips jerk back sharply.

“NnnNN…!! Nguuu…!! Ah, no, stop… ah, aah…!!”

Her skirt falls over my head, plunging me into darkness. I pause, pulling my face out.

“Miyu, the skirt makes it dark when it falls. Keep it in your mouth.”

“I can’t help it… I’m gonna moan…”

“Do it.”

As I reset, she bites the skirt again, teary-eyed.

“Now… nju… jururu… churu… chuppa…”

“N, NN, NN…!! Fua, haa, ah…!! Nn, AAH…!! Sorry… this is too much…!!”

Within seconds, she lets the skirt slip again, lacking her usual grit. This pleasure’s beyond what she can endure silently.

“Close to cumming?”

“I’m already cumming! Anyone would cum with their clit licked like that…!”

True, direct clit licking would make most cum. But in seconds? After all her teasing about my premature ejaculation.

“Please, just one hand…”

“Fine. But peel the hood properly so I can lick it.”

“Y-Yes…”

Grumbling, she can’t break her promise. She shakes her twisted twin-tails and bangs, psyching herself up, lifts her skirt with one hand, and peels her hood with the other’s fingers.

“Here… please…”

Ready, I approach her crotch again. My rough breaths on her exposed clit make her tremble.

“Nnmu… juru… jupa… pero pero… jurururu… nn…”

“A, a, aah… aaah…! Nn… nnn…! Haa, aaga… haa, haaa… nnN…!”

Juru… chupa… jurururu… nn… guchu… CHUPA… haa… ha… nnu… juu…

“Hiaa, ah… hi, aah…!! I’m cumming, so… gentler, please… ah, ah… nn… aaanah…!!”

Miyu feels my clit licking, her face red with shame, lips loosening into a sloppy expression—or so I imagine. But with my face buried in her pussy, all I see when I look up is her massive breast bags, uncontained by her dress.

“Nn… juru… chuppa… nn, Miyu. Your boobs block your face.”

“Fe, haa, fuu… I-I don’t care, you’re the one making me… nn… nnn… haa… do this…!”

If she were naked, I could push her boobs aside to see her face. Should I ask her to bare her chest? But that feels wrong. In porn, loli-cos with just boobs out is hot, but I want to lick my sister’s pussy as the loli-cos enthusiast. Stripping her costume feels like stealing her essence.

“Fine, I’ll focus here.”

I lock onto her slit. With a mental fanfare, I slip my tongue into her dripping crevice. Her tight folds release a flood of juices onto my tongue. Like savoring the last drop of whiskey, her lewd fluids quench my throat. JURURURU—!! I dive in, devouring her pussy.

“Ah, naaah!! Ah, aaah!! O-Onii, hyaau, hiaaaa…!!”

“Nmu… nuu… jururu, juru, juu…!! Haa… helo… ero… nn… kuju… ju… guchupu…*”

“Hia, ah, aaah…!! Deep, no, your tongue… nn, nnuu…!! Aah, hi, no… don’t put it inside…!!”

After tasting her juices, I press my mouth to her hairless vulva, thrusting my tongue deep. The rough texture of her vaginal walls hits my tongue, reminding me this is the same cave I’ve fucked so often—such an erotic, pleasurable place.

“AaAH… uuu… oni, hya, aah…!! Sorry… I can’t… anymore… ah, aah… cum… NN—!!”

As I slurp lewdly, she collapses to her knees, overwhelmed. It’s inconvenient for the play, but I’m nearing my limit too. The floor’s stained with her dripping juices and a single spurt of my barely-contained semen.

“Um… I’ve cum so much, standing’s hard…”

“Hard? I’ve only licked for a few minutes.”

“But…”

Her teary eyes meet mine. She melts under sexual teasing, playing up her weakness to me. It’s exasperating but too cute to be mad at.

“Fine, you don’t have to stand and lift your skirt anymore.”

“Really!?”

“But get on the bed, on all fours, butt facing me.”

Her familiar scornful glare returns. Doesn’t she know that only excites me? No matter her insults, I’m set on licking her pussy dry. I won’t back down.

“It’s so cruel I’ll pretend it’s medical treatment.”

She climbs onto the bed, sticking her butt out coldly. What medical treatment? My libido therapy, maybe, but no way this is a standard procedure.

“It’s harder to lick if you crouch. Lift your hips as much as you can.”

“If you lick gently, I will.”

Elbows on the bed, she buries her face in a pillow to muffle moans, signaling readiness with her eyes.

“Gently, huh.”

I got carried away licking wildly, but savoring her slowly isn’t bad. I slide under her butt, her spread knees parting her folds halfway. Observing her pink hole, I lick from her lower buttocks to the outer lips, slowly, keeping my tongue wet and soft, learning from her blowjobs to compensate for my cunnilingus inexperience.

“…!!”

Miyu buries her face in the pillow, breathing heavily. Even without direct stimulation, licking around her pussy feels good. I know from Yamamoto-san’s thorough blowjobs from butt to groin how nice this is.

Seeing her enjoy it, I add feather touches to her thighs, a trick from Yamamoto-san’s massages. Lightly stroking from her crotch to her knees amplifies her pleasure.

“Fu… NN…!! An… a… haa…!! Au… fa… fuu…!!”

She writhes, struggling to stifle her moans. Her thighs, developed by Haruka, are sensitive. Teased there and around her hole, how long can she stay sane? My overinflated cock aches to plunge into her gaping vagina, but I focus on licking, holding back.

“Ah, agu… a… haa… Onii… chan… stop… my head’s going crazy…”

“Feels that good?”

“So good… ugh… insanely good… please, make me cum…”

She sways her hips, urging my tongue inside. So reluctant before, now she craves it. Her frilly skirt sways with her butt, her boobs jiggling beyond her knees.

I don’t want to go easy on her today, but after this shameful display, I relent. Spreading her folds with my thumbs, I thrust my tongue deep.

“Aan… aah… nuaaa…!!”

I stimulate every reachable erogenous zone with my tongue, then mimic a thrusting motion to send sensations deep into Miyu’s vagina. Relentlessly, I mix air to make loud, vulgar jupa jupa sounds, driving her with cunnilingus until she can’t keep her face buried in the pillow.

“Nuuu…!! Aah, ah, aaah… good… so GOOD…!! Insanely good…!! An, aah, haaa…!! An, aaah, haa, ah… nnn… haa, good, good…!! Gonna cum, CUM… a, a, AAAH…!!”

Miyu climaxes repeatedly, butt raised. She lifts her hips to escape the vaginal licking, only to orgasm again, her legs giving out like a frog’s, collapsing with spread thighs. Yet, she shakily raises her hips again like a fawn, her noble dress betraying not a shred of dignity.

“Fua, aah, ah… nn…!! W-Wait…!! No, Onii-chan… stop!! Ah, aan…!! No, really, stop…!!”

Suddenly, she pushes my head away, her voice genuinely pleading. Stopping, I see her clamp her thighs shut, desperately holding back her climaxing body. Gripping the sheets tightly with one hand, she tries to distract herself. Holding it in like that… could it be that?

“M-Miyu, you okay?”

“Hauuu… u… haa… for now… I think I’m okay…”

Panicking on the bed, she gradually relaxes, breathing slowly. Carefully stepping off, still shaky from orgasms, she clings to me, our faces close.

“Hey, Miyu.”

“W-What…?”

“That wasn’t pee, was it? You were about to squirt, right?”

“N-No way! I still need to go!”

She fidgets, rubbing her knees under her goth-loli skirt. I thought she was about to squirt from cumming too much, but apparently not.

“But… if I kept licking…”

If I’d kept my mouth on her and she couldn’t hold back, it would’ve turned into that kind of play, huh?

“If you say ‘cum in my mouth,’ I’ll slap you.”

“I won’t say it.”

Even with my beloved sister, there are things I can’t do. Unless she really begged for it, that is.

“But why the sudden urge to pee?”

“Maybe the herbal tea I drank before greeting you.”

“That’s gotta be it.”

Cause and effect, clear as day. Why does this sister’s brain short-circuit when it comes to sex?

“I got so nervous changing, I couldn’t think about licking.”

“Well… if that’s the case, can’t be helped…”

No point dwelling on it. I’ve savored her pussy enough.

“So, let me go to the bathroom.”

She pleads, barely able to walk without my help.

So, I go with her to the bathroom. She sits on the toilet, hugging her skirt to keep it clean.

“Um, I need to go.”

She glares as I linger. I’m not into her pee, but a sudden inspiration hits, and I have to try it.

“If you came now, could you still hold it?”

“Absolutely not… but… why ask…?”

“Just… got an idea.”

I’m not that into her peeing, but her writhing in shame from being watched? Very interested.

“You’ve got a rotor, right?”

She freezes, instantly grasping my intent.

“Do you realize how perverse you are? Probably ten times more than you think! Think again about what you’re trying to make your sister do!”

“I just… want to tease you with the rotor until you can’t hold it…”

“That’s not ‘just’ anything! I have dignity as a girl! I hate you!”

“Hey, saying you hate me is against the promise.”

She glares, sulking, then releases her frilly skirt, resting her hands on her knees. Under the bathroom light, her made-up face looks displeased, but since she made the promise, she can’t defy even the worst orders.

“Second drawer from the top, right side of my desk.”

Grudgingly, she tells me. Thanking her, I leave to fetch the rotor from her room.

Opening the drawer, I find a simple pink corded rotor. I figured she’d have a fancier remote-controlled one from playing with Haruka, but for Miyu, who values the aesthetic of her masturbation fantasies, this cheap one makes sense.

“…Huh?”

I wasn’t planning to snoop, with time short and respect for her privacy. But I can’t look away from what catches my eye.

A transparent box holds numerous SD cards, organized with labeled dividers. Beneath, a notebook with matching labels details the contents.

“‘Trip with Haruka,’ ‘Studio Shoot’… she’s been serious about this.”

Muttering to myself, something stirs. I forced her into loli-cos for sex, but maybe I shouldn’t use it as a tool. Today’s outfit was rushed for our play, but she might’ve wanted to craft it seriously for photos. Making her reach her limit with a rotor while dressed so cutely might be too much. Such thoughts cross my mind.

“…Huh!? What!?”

But my sentiment vanishes instantly.

Among the labels indicating shoot locations, I spot “Onii-chan’s Room,” reeking of something illicit. The data volume rivals her shoots with Haruka. I’ve never heard of my room being used for cosplay shoots, so she did it secretly. This amount of data isn’t normal for casual cosplay photos. Haruka wouldn’t shoot in my room, so it’s Miyu alone.

These aren’t photos—they’re videos. What videos would she shoot alone in my bare room, unfit for posing? No need to check the notebook; it’s obvious. She’s been indulging in lewd acts alone without me knowing. Grabbing the rotor, I leave her room, my balls boiling with anger.

“Miyu.”

I stride back, opening the bathroom door. Not locking it? Worthy of praise, my sister.

“What’s with that look?”

“I’m dying to cum.”

“I’ll let you creampie me later.”

Trying to sound bored, she inserts the rotor’s vibrating part and hands me the dial.

“Here. Strip your sister’s dignity as you please.”

With a scowl, I brandish my dense cock, fingering the power switch. Pressing it would make her cum and leak in shame… or so I thought. But now, it’s not so simple.

The rotor’s vibration is surprisingly strong, but it’s just a rotor. Miyu’s not just weak to physical stimulation—she climaxes from the thrill of sex with me, her “big brother love” orgasm type. To break her cool facade, I need more.

“How about a bet? Who cums first—me from your blowjob or you from the rotor? If I cum first, you can pee normally.”

“…No way.”

She flatly refuses, eyeing my raging cock before glaring again.

“If I suck that while you stimulate me, I’ll definitely cum first. Then you’ll shoot in my mouth while I’m in a mess, right?”

Her calm foresight is uncanny.

“No good?”

“No.”

“Then how about this?”

I turn the rotor’s dial slightly, activating it.

“Nn… ah, suddenly… that’s mean…!”

“The vibration’s at its weakest, so you can handle it, right?”

“Ugh… u… I can manage this, but…”

Miyu flinches at the sudden stimulation but doesn’t cum yet. A faint buzzing echoes from inside her vagina, and as she adjusts, her tense expression softens. I hand her the rotor’s controller, keeping the setting low.

“What’s… this about…?”

“At this level, you can still give me a blowjob, right?”

“If you want it that bad, I’ll do it… but honestly, rotor or not, I’m about to leak…”

She presses her knees together, pleading for mercy.

“Do this: make me cum in one minute, and I’ll leave.”

“Muu… one minute? I could probably make you cum in that time…”

“Right?”

I’ve never lasted a full minute under her serious blowjobs. It’s a fair deal for her.

“But if you don’t make me cum in a minute, you turn the rotor to max yourself.”

“Fue…? M-Myself…? Are you a true sadist, Onii-chan…?”

“I’m your brother, after all.”

“That shuts me up…”

She weakens, realizing the rotor’s cord connects to her vagina, her face flushing slightly.

“Then suck this.”

I point my arched cock forward, urging her mouth closer. Giving up resistance, she takes the tip, sucking precum for a few centimeters.

“It’s long and thick, hard to suck… I liked the old one better… just chuu chuu and it’d spurt super bitter stuff…”

“You made me wait this long. Can’t help it.”

Her juices boost my cock’s size and stamina, a mystery proven by my body.

“How do we time it?”

“Just feel it. I’ll hold out until you give up.”

“I might keep sucking past your limit.”

“Fine. The minute’s up when you admit defeat.”

“Ugh… you think I’ll stick to the rules, huh? Too bad, you’re wrong this time.”

Spitting, “I’ll never admit defeat,” she grabs my hips and dives onto my cock.

“Mugu… nn… juru… jupu, jurupa… haa… Onii-chan’s… han… so big… haa… nmu… nn…”

She bobs her head fiercely from the start, her tongue deftly teasing the ridge, hitting my weak spots visually and physically. When her mouth isn’t enough, she uses her throat, lips enveloping the base. Long strokes mix with her loli-faced blowjob, rivaling porn stars. Her wide-ribboned headband sways, her glaring eyes adding intense stimulation.

“Guju, jururu… gujubu, gapu… guppo guppo, guchuru… jupa… haa… what’s… this… nn… jupu…”

I stand like a tree in a storm. Her blowjob feels amazing, and I could cum anytime. But now, I can choose to hold back.

Miyu sucks relentlessly, panting from effort, driven by refusal to lose. Even dizzy from lack of oxygen, she keeps deep-throating.

“Ah… Miyu… feels so good… you look so cute trying hard…”

It’s not that I’m immune or her skills have slipped. Sex is mental. I used to feel inferior to beauties like Miyu and Yamamoto-san, but after everything, I face them as equals. Today, I’ve finally gained mental dominance over my sister.

“Mugu… nn, juru… uuu…!”

She knows it. It’s not just my strength—she gave me that ticket because deep down, she craves submitting to her beloved.

“Almost a minute.”

At my words, Miyu, already admitting defeat, grips the controller with regret in her fierce eyes. Thumb on the dial, she glares with a mix of resentment and shame. Bound by her sense of fairness, she won’t quit the game she accepted.

“Fuu… fuu… uu… nuu… uguuu…!!”

With short, shallow breaths, her trembling finger cranks the rotor to max. Sitting on the toilet, her legs convulse, sobbing while sucking me, overwhelmed by pleasure and humiliation. Meeting her teary eyes, I feel a pang of pity, but pity in a bet is disrespectful. I urge her with a glance to finish me.

Fully submitting, her skilled technique fades to clumsy back-and-forth motions, her lower body quaking as she stimulates my cock.

“Miyu, so fucking hot… I’m gonna cum in your mouth… swallow it all… ah, ah… here it comes…!!”

Byururu, byuku, gopu, gopu—! Semen surges through my urethra, the sound echoing like water in a drain. Drinking it heightens her arousal, her body visibly shuddering in climax.

Then, a gyupo sound, unfamiliar, followed by a hard clank. Forced to pee while cumming and taking my load, she endures an indescribable disgrace, still catching my semen.

“Ugu… nmuu… geho… khaa, haa… uu… uuu…”

Eyes red and swollen, she chokes on defeat’s tears. Yet, she meticulously cleans my urethra with a blowjob, rubbing her stomach, swallowing repeatedly to clear the catch in her throat.

“Your semen… so bitter after so long… thick, makes my stomach feel gross…”

She clamps her mouth shut, fighting nausea. That first teased shot was dense, but her swallowing shows love.

“Sorry, but… can I put it in?”

“Fue…?”

Seeing my still-hard cock, her face turns despairing. Pent-up, one shot isn’t enough. Sex with Miyu and Yamamoto-san has made my libido abnormal.

Not waiting for her answer, I crouch, lifting her legs. On the toilet, her spread thighs reveal her slit, framed by the garter belt, begging for insertion.

“W-Wait, I haven’t wiped…!”

“It’s fine. I looked it up before—pee’s clean. If it bothers you, I’ll lick it.”

“That’s not the issue! This position… is insanely embarrassing…!”

“No complaints. Today’s no-defiance day.”

“Ugh! Devil! Monster! Pervert Onii-chan!”

Her mouthy attitude fuels my urge to punish. Crouching, I hook my cock’s tip into her tight hole and thrust deep. Her vagina squeals at the full-on sex, yet accepts my thickened shaft fully.

“Ah, ah, aah…!! Higyu… uu… naaah…!! S-So big… a, ugu… intense, nn, tough… u… nah, aah…!!”

I thrust aggressively, pulling her legs to grind her pussy like an onahole. My tip scrapes her cervix, drawing joyful screams.

My old cock was gentler on her. For G-spot stimulation, smaller might be better. Normal couples don’t need such girth. But for us siblings, it’s different.

“Miyu… aah… Miyu, Miyu…!! Your cervix grinding my tip… feels fucking amazing…!!”

“Haugu, hia, aaah…!! Onii-chan’s… scraping so hard… an, haa… feels good…!! An, ah, nah…!!”

Clutching her skirt, she thrashes her hair against the pleasure surging to her brain. Her pained yet satisfied expression shows I’m finally giving her what she craved, feeding my lust.

Her most sensitive spot isn’t her vagina. Vaginal stimulation, even in full sex, is just foreplay for her. She craves cervical stimulation, needing a certain length to reach it in any position. That’s why I had to fully restore my cock.

“Fuu, haa… you said you liked it smaller… but this is better, right…!”

“Mugu, fuu… uu… if you’re fully back…! I wanted to cuddle…! Stupid, stupid Onii-chan! I really hate you…!”

She keeps saying “hate” despite the ban, breaking that one promise. I rub my irritated cock in her vagina, pounding her V-spread crotch. Ejaculation nears.

“If you hate me that much, I’ll cum outside…!”

“Nn, nn… fue… he…!? No… I want it inside…!! Please… haa, nhaa, angu… cum inside…!!”

“Fuu…! Today, you’ll obey any order, right…? If you’re that selfish… haa… I’ll make you start over…!”

“Even so, no…! Redo it if you want, just cum inside…!”

Miyu clings to me, pleading desperately. It’s been a while since we had intense sex, and she seems to crave a creampie no matter what. She wouldn’t want cum from a guy she hates, but I’m not trying to be cruel, so I give her one chance.

“Then… if you admit you love me, I’ll cum inside you…!”

I can’t stop thrusting, driven by my desire to ravish her. Teased by her demands while holding back ejaculation, I leave the final choice to her. Despite the tight fit of my cock in her vagina and the masochistic pleasure making her writhe, her face lights up with shameless joy.

“Yay, a creampie…! I-I love…! I really love you, Onii-chan! I love you so much… an, nkyu, gu… haa… love, love… I love you, Onii-chan…!!”

In that moment, it feels like her thighs part willingly. Flipping her stance without hesitation—fine, I knew it all along, but her quick shift for a creampie is something else.

“Hn, haa, ha… If you love me that much… I’ll pour all my pent-up cum deep inside you…!!”

“Aah, ah… love… I love you, so… ah, nah… please, inside…! I love you, give me your cum…!!”

Her loosened lips and tongue beg for a kiss, her cuteness and excitement flipping my ejaculation switch fully. I intertwine our hands in a lover’s grip, slamming my cock into her open slit with all my strength.

“Ngu… muchu… fuu… Miyu… nn, gonna cum… nju, nn…!!”

“Chu, juru, hamun… CHU, nn… Onii-chan, come… nn, haa… lots of cum, I want it…!!”

“Miyu… Miyu…!! Coming, coming…! Naa… Coming…!!”

Byururu, byuku, byukubyuku, byururu, byu, byubyu, byuu—!!

Thrusting deep, our hips locked, we send semen to her womb together. As I flood her with cum, she grips my hands tightly, keeping her thighs spread despite her climaxing body trembling with each pulse of my ejaculation. After, I lower her legs, and we kiss repeatedly in the silent bathroom.

“Nn… nmu… chupa… haa, haa… Miyu… you were so cute…”

Releasing her, she leans against the toilet tank, cum dripping from her spread slit. After a few minutes of calming her breath, she regains awareness, notices her state, and closes her legs, too weak to move from the seat.

“Fuu. Thick cum feels good for me too. How was it for you after so long?”

“U… uu… I don’t know… you stripped away my dignity…”

Sobbing with mock tears, she composes herself, straightens up, and glares with sharp, lined eyes.

“You’re not gonna say you still hate me after all that, right?”

“I hate what I hate. Hmph.”

Turning away with exaggerated disdain, she’s remarkably calm despite being filled with thick cum, her rational shame acting as a strong shield. But she’s not as composed as she seems.

“One thing—those garter belts and stockings, are they store-bought?”

“Hm? Store-bought, yeah. I wanted to make them, but thinking about sex with you, durability was tricky…”

“Then can I cum on your thighs?”

“No way.”

She denies it instantly with a scowl. Noticing my cock still hard after two ejaculations, she blushes, slightly embarrassed by my lingering lust—all directed at her. She’s gotten easier to read lately. Cute sister.

“Men should feel satisfied after one ejaculation.”

“Didn’t you want me to cum multiple times?”

“That’s when I want to make you cum. When you use my body freely, two times should be enough.”

Making flimsy excuses, she adjusts her disheveled stockings and garter belt, checks her hair, and fixes her headband. As she smooths her wrinkled shirt from bouncing breasts, I extend my hands, she grabs them reflexively, and stands.

“Ha!”

Too late, she realizes my trick. Propping her shaky legs with a hand on the tank, I lift her skirt from behind and rub my rock-hard cock against her slit.

“Okay, right?”

“Ah… yes…”

Unable to protest, she submits to being taken. From behind, my cock slides in, pushing out cum that should’ve flushed away. The sticky friction of her hole and my shaft makes a wet sound, and the dripping fluids hit the toilet water, embarrassing her despite the skirt hiding our union.

“Back to earlier—can I cum on your thighs next?”

“No way, obviously. It’s such good sex… nn, a… just cum inside… mean Onii-chan… fan, na… I hate you…!”

During slow sex, she leaks moans—“nn… nn…”—despite talking.

“Then I’ll cum inside again.”

“Eh… w-why so sudden…?”

“You said you want a creampie. I’ll cum like this.”

“Nn, ah… haa… I-I see…”

Even slow sex is just rough thrusting. If she feels my cock too much, pleasure drives her crazy, so I can’t tease if we’re talking.

“Miyu, do you love me?”

“That’s… ah… you banned saying I hate you… haan, ha… so I have to say love, so…”

“I’m lifting that ban. Say you hate me if you feel it. Now answer.”

“Fue… u… nn…”

With the ban gone and a creampie assured, she has no reason to say she hates me.

“Uu… I love you… idiot…”

Despite all the shame play and rough doggy-style sex, getting my cum makes everything else trivial to her.

“Then I’m gonna cum soon… which feels better… deep thrusting like this… or pulling out like this…?”

Holding her skirt up with one hand, supporting her waist with the other, I vary the force and ask.

“Tch… if it’s not deep grinding… pulling out feels… better…”

She answers softly, barely audible in the quiet room.

“When you pull back… fuu… unn… it forces my vagina to tighten… tch… it feels… really good…”

Her tiny vaginal hole, too tight for an average cock, relaxes just enough for me during sex. That means there’s no extra space. Pulling out creates a vacuum, forcibly tightening her vagina.

“This feels good?”

Matching her preference, I thrust deep, wrap my arm around her stomach to squeeze her vagina, and focus on pulling out.

“Aah, uuaah… no, that’s really no good… feels good… haa, haaa… nn, aah… feels good… so good…!!”

Releasing the tank, she grabs my hand. Her voice, screaming pleasure, is anything but normal.

“Aah, nnaaah…!! Onii-chan, really, no more…!! Aah, nn, aah… I’ll… nn, a, hiaa, aaah… become a girl who can only do sex…!!”

Sensing her rationality crumbling, I revert to rough, wild sex, lifting her waist until she’s on tiptoes, thrusting hard toward ejaculation.

“Haa, haa… Miyu, cumming inside… all my cum, inside you…!!”

“Aah, nuuah, Onii-chan…!! Onii-chan, Onii-chan…!! Love… love you…!! I love you so much… nuuah, hiaaah…!!”

Doku doku, dopyururu, dopun, byururu, byuru, byu, doku, doku, dokun—!!

I ejaculate endlessly into her vagina until my balls are drained. Her once-pristine lolita costume is disheveled, fluids drip down her thighs, and her headband lies on the floor. In the small room filled with the stench of sweat, urine, and semen, Miyu leans against the tank, breathing faintly, then faints.

A white thread stretches from my cock to the floor, mirroring the cum dripping from her. I feel profound guilt and superiority.

“All out…”

Dazed, looking up, my heartbeat calms. Seeing her pitiful state, I can’t leave her here, so I carry her to my room to rest.