Did You Hear That With Your Pussy!?♡
"You filthy slut of an older sister—!!"
The instant Jiyun laid eyes on me she locked both hands around my waist and drove her cock straight down into my pussy in one brutal vertical thrust.
SPLORCHHHH!!!
"Ughhoooooh!!♡"
That already monstrous cock, slamming home with her full body weight behind it, left me zero chance to resist. I came on the spot, gushing love juices around her shaft.
"You knew damn well I couldn't hold back if you teased me with moves like that!"
"Eeghiiih!!♡♡"
"It's so fucking hot my cock's about to explode!!"
THWAP! THWAP! THWAP!!
Jiyun started pounding me in a full mating press, trying to wreck my womb with every stroke. There was no way to endure it. No female on earth could. How the hell was any girl supposed to beat a futanari cock carrying Mom's alpha genes?
All I could do while she skewered me was…
…lie there and moan like a cheap whore.
"Sorry, I'm so sorry♡ Your big sister's such a total cunt-addicted freak, I'm so sorry♡"
"Even your apologies are fucking hot!!!♡"
GLUUUURK——!!
"Ooooooh!!♡"
"I'm not letting you go today, so just stay impaled and take it."
Every time Jiyun's cock assaulted my womb my hips jerked upward. My thighs spread wider on their own, opening me up so she could fuck me even deeper. My body had been trained so thoroughly that nearly every thrust shoved me straight into orgasm.
I would have been disgusted by this in the past…
But my female power had risen so high that now it just felt good. Purely, stupidly good.
"I-I love it♡ I wanna keep getting fucked by Jiyuni's cock forever♡"
"Yeah, yeah♡ Big sis, I'm gonna rail you until you pass out anyway."
Jiyun wrapped her arms around me and crushed me tight against her, holding me so firmly there was nowhere I could run.
"So just be a good little bitch and keep squealing."
SPLORCH! SPLORCHHH!!
"Y-yes, ghoooooh!!♡ Ohh, oh♡ Hoooooh!!♡"
Every time her cock plunged in for a deep kiss against my womb and then dragged back out, my mind went blanker and blanker. Thought itself stopped working. I felt like nothing more than a beast that only wanted pleasure.
"Gheeeeh♡ Ohok♡ Oooooh!♡ Heeeit!?♡"
Even so, the endless waves of mind-melting pleasure left me with only one thought: this feels amazing.
"You're seriously such a slut, big sis…♡ If we weren't family I'd just make you my girlfriend already. What a shame♡"
"Eeghiiih!!♡ Heeut, oh♡ Nnghaaah!!!♡"
"Well… at least we can still fuck as much as we want."
SQUEEZE.
Suddenly Jiyun buried her cock to the hilt and grabbed my ass hard. I felt her shaft twitch deep inside me.
"I'm gonna mark you so thoroughly, big sis♡"
The second she finished speaking her cock swelled even thicker and began pumping thick, scalding ropes of cum deep into my womb.
BLUUURT!! BLUB-BLUB-BLUB!! BLURT!! BLUUURGLE!!
"O-hoooooh!?♡ Nnghhooot!!♡"
"I'll mark you so hard your eggs drown in my cum♡"
The sensation of those violent jets of semen battering my womb walls was too much. I completely lost control and sprayed a fountain of love juices all over the couch.
"Eegit, nngh, heeek♡ Ooooh♡ Hooo…♡"
Love juices gushed from my pussy and soaked the cushions. Even through that massive climax Jiyun's orgasm never stopped. She kept flooding my womb like she really meant to drown my eggs in cum.
BLUB-BLUB!! GULP! GULP!! BLUUURT!!
"Hah♡ Jiyuni's cum, ohh♡ Keep pouring it in♡"
"It's your fault for being this sexy♡ Nngh♡ Your pussy keeps squeezing and begging for more…!"
Jiyun panted hotly against my ear while she kept cumming.
BLURT! BLUUURT! GLURK!
"He-eh♡ Ooooh♡ Hoo, hot♡ Ohg♡"
Only when my belly had swollen noticeably did her orgasm finally taper off. The moment it ended every bit of strength left my body and I collapsed bonelessly onto the couch.
"Hweh, hweeeh…♡ I'm so full inside…♡"
Every tiny movement made Jiyun's cum slosh wetly inside my womb. The thought that she had marked me as hers made me feel strangely happy.
I reached up to hug her and rub my body against hers—
PLOP——!
"Ooh!?♡"
—only for Jiyun to yank her cock free, flip me onto my stomach on the couch, spread my ass cheeks, and shove that same thick cock straight into my ass.
THWAAAP!!
"Nnghheeeeh!?♡♡"
"What are you spacing out for? We're just getting started♡"
…I had momentarily forgotten.
The only thing Jiyun inherited from Mom wasn't the size of her cock.
She also got the legendary stamina that let her fuck for seventy-two hours straight without resting.
"J-Jiyunaa…♡ Can big sis rest just a little…♡"
"A bitch like you doesn't get to rest!!♡"
THWUUUMP!!
"Ughhoooooh!!♡"
"Looks like you've gotten a little soft while Mom's been gone… Guess I'll have to remind you."
Jiyun kept her cock buried in my ass and clamped both hands hard around my waist as she spoke.
"A proper female… always has to take cock no matter what."
"J-Jiyunaat♡"
"Today I'm gonna fuck you just as hard as Mom does♡"
THWAP!
"Eeghiiih!!♡"
Her cock stabbed deep into places no pussy ever reached. A completely different kind of pleasure twisted through me and tore moans from my throat. But Jiyun refused to let even that go; one strong arm locked around my midsection and pinned me completely still.
"Stay still and take it, big sis!♡"
SPLORCH! SPLORT! SPLORT!
"Oghhot♡ Oh, hoooh!! Nngheeeeh!!♡"
Trapped in her arms, I couldn't escape no matter how I squirmed. The pleasure was so overwhelming I tried to push her arm away, but the difference in strength between us was absolute. Escape was impossible.
"Hah, gheeeit!!♡ Nnghhot♡ Oh, euhk!!♡"
With my female power so high, just getting my ass fucked was already driving me insane. Yet Jiyun still wasn't satisfied. She planted a hand on my swollen lower belly and started pressing down hard.
"Heeeeeeh!!♡"
My belly was forced down, my back arched, and the cum packed inside me came pouring out in thick globs.
"Eegit, nngh, heeek♡"
"Hnn…♡ You really are a born bitch. Squeezing both holes this tight… you're making it impossible for me to hold back♡"
Jiyun ground her cock in deep, rolling her hips slowly so the fat head dragged and pressed against every sensitive spot inside my ass. Each time her glans crushed against my walls, fresh waves of pleasure crashed through me.
"Haah!♡ Eegit♡ Nnghooot♡ Oh, oooh!!♡"
"You better prepare yourself to stay up all night, big sis♡"
Maybe it really was Mom's blood talking. Unlike other futanari who needed a break after one orgasm, Jiyun was already telling me to steel myself for an all-nighter.
How could I possibly refuse a little sister this overwhelming?
"O-okay…♡"
As a female, refusal simply wasn't an option. Just like she said—a proper female always had to take cock well, no matter the time or place.
"I'll… ohok♡ prepare myself… for an all-nighter…♡"
"I said prepare yourself for at least an all-nighter, big sis! Did you hear that with your pussy!?♡"
SPLORCHHH!!
"Gheeeiiih!!♡"
"Of course a dirty bitch whose head is full of nothing but getting bred would say that!!"
"Sorry, I'm sooorry!!♡"
"If you're sorry then apologize by servicing me with your ass!!"
THWUUUMP!!
Every time Jiyun's massive cock churned my ass, my vision went white. I felt like I could pass out any second. Still I clung desperately to the last scraps of my reason, determined to stay conscious and make her cock feel good.
"Hegit, hah♡ Nnghiiih!♡ Ogot, oh♡ Hooooh!!♡"
"Hnn…♡ Haah, big sis, your ass is squeezing so hard I can barely… hold on…♡"
Jiyun's whole body shuddered as she tightened her grip on my waist even further.
"Big sis♡ This time I'm gonna fill your ass to the brim, so don't spill a single drop!!♡"
"O-okay…♡ I'll take every last drop of Jiyuni's cum…♡"
SPLORCH-SPLORCH-SPLORCH!!
Her hips grew rougher and more frantic. Her cock stirred my insides without mercy, leaving me unable to even breathe properly between moans—until finally the cock buried to the root began to throb and unload.
BLUUURGLE!! BLUUURT! BLURT!! BLUB-BLUB-BLUB!!
"Ghoooh, oh, hoooh!!♡"
The jets were so powerful it was hard to believe this was only her second orgasm. The thick flood of Jiyun's cum pouring into me shoved me over the edge again before I could even try to resist.
"Heeek, eut, gheeh♡ Oooh♡ Nnghheeh♡♡"
"Haaaah……♡ That was… so much…♡"
The unending stream of cum filled my belly past capacity until it started leaking out around her shaft. Her volume really was something she inherited from Mom.
"Big sis…♡ Stay still until I'm completely finished♡"
"I know…♡ I'll stay still until Jiyuni finishes cumming……♡"
I stayed perfectly motionless and let her use me as she finished emptying herself into me.
Beep-beep-beep.
The sound of someone punching in the door-lock code reached us from the entrance.
Mom?
No—Mom was still at work and wouldn't be home yet. So who the hell was entering our house right now…?
I panicked at the sudden visitor and tried to pull off Jiyun's cock—
—but the door opened and a woman stepped inside.
"……!!"
Jiyun's eyes went wide as she turned toward the entrance.
"D-Dad……?"
Dad?
Even knowing Mom's genes were involved, Dad looked far younger than I had ever imagined. And pretty. Ridiculously pretty. I had expected someone a little wild and masculine after hearing Mom turned girlish around them, but there wasn't a single masculine trait to be found. The soft pink hair only made them look even more feminine.
…Wait.
Did that mean Dad just walked in on their daughters having sex?
"……You two."
Dad looked us over carefully, then asked in a calm, almost casual voice:
"Did you use a condom?"
……That was the absolute last question I had expected.