In Front of My Sister
Honestly, I was incredibly surprised.
"...Ah, wait..."
You, Seo Woojin—the guy who always wore a gentle, sunny smile in front of others, especially in front of my sister—were currently half-out of your mind with lust, much like how you would pound into my pussy when you were secretly doing it behind my sister's back while she was on a phone call. Well, that was part of it. But mostly...
"...It's tight, so move over a bit."
"...Are we going to lie side-by-side without our bodies overlapping this time?"
"...Yeah."
It was because of my sister.
"This position is... more comfortable for touching you."
"Touching...?"
"...Like, when I'm petting you... or licking your breasts..."
"..."
I had thought she seemed slightly interested since we were in the bathroom, perhaps because it was for the sake of her boyfriend, but I never expected my sister to be this submissive to me.
"...D-don't smile like you've won, Lee Jiyoon."
"Yeah, yeah."
"And when your turn is over, you do it to me too. ...Don't just take without a conscience."
"...I was going to do that anyway."
"You were bragging yesterday that you squeezed out more semen than I did..."
"That's just... I don't want to break up with Woojin, so I have to win at least that much, right?"
"...He's my boyfriend, that guy."
"I know."
"...Just in case, don't you dare think about meeting him secretly on your own."
"I got it, okay?"
It was hard to say she was just playing along reluctantly when, despite only being laid down on the bed, my sister already had her cherry-blossom-colored nipples—perhaps because we're sisters, they were the exact same color as mine—standing stiffly erect.
"Anyway, you mean we should take turns, right?"
"Roughly... yeah."
"Then how far are we going to go? Are you still against kissing me and stuff?"
"..."
"..."
"..."
"Huh? Sister?"
"I... don't like it, but... let's just see how the situation and the mood go."
"Ah, I said that meaning I still didn't like it. ...Were you thinking of kissing me if it came to it? Sister?"
"...Ugh..."
It was because of my sister, who was whispering secrets to me behind the back of Seo Woojin, who was busy fetching a condom from the cross-bag stuck in the corner of the room. She didn't seem to realize it herself, but her gaze looking at me—and her mind, which was a mess of sexual desire—was just like Seo Woojin, who was climbing onto the bed, fully aroused.
"..."
Thanks to you, sister.
"......Ugh...?"
The tip of my sister's tongue, who was kneeling on the bed, touched a spot just a little away from my nipple. At the same time, I fantasized that this was perfectly to my taste: 'My sister, who was masturbating in defeat on the side, is finally serving me.' Seo Woojin's cock, which was surging with blood even hotter than when I had secretly allowed him to ejaculate inside me, poked directly into my tightly shut vaginal opening without any foreplay.
Well, we had already had plenty of sex earlier, and I was already soaked... from when my head was held by my sister while I sucked his cock in the bathroom. So, it wasn't really necessary.
"...Woojin. If you want to do it, you can."
"'You can do it'? Shouldn't I be the one giving permission, not you, sister?"
"You like this kind of thing... don't you? You were like this on the sofa last night, too."
"Don't ignore what I'm say... ...Ugh..."
My sister, spreading her fingers into a V-shape, obscenely spread my pussy open for me. At the same time, she stroked my clitoris, similar to how I would warm up before masturbating in earnest. As I held back the moan leaking out due to the tingling sensation, the glans pressed firmly and strongly against my narrow vaginal opening.
...But this is a bit strange. If it were that pervert, he surely would have wanted to shove it deep into this wet, dripping opening right away. When I glanced up from where his gaze had been fixed between my legs, I saw eyes filled with as much sticky sexual desire as my sister's. Watching that gaze blankly...
...I realized it belatedly. That hesitation, pretending to be his last bit of patience—it was all a mask for my sister's sake. That Seo Woojin guy, he still had his reason firmly intact. ...Ah, of course, he was definitely not in a normal state.
"Can I really do it? ...Okay?"
"...If you do to me as much as you did with Jiyoon."
"..."
"...Ah, no. If you do it just one more time than that. ...I'll give you permission. For today."
...But what would I gain by revealing that fact to my sister? I know full well that it feels best to just keep my mouth shut and let him shove his cock in, *thud, thud*. Since we were in the middle of talking and my sister couldn't see my face, I stuck my tongue out at him for a second. And then, Seo Woojin, who seemed to have finally lost his grip on reason, had his fully engorged cock—
"...Ah, it's coming in... ...? ...Hiiik...?"
As my thighs were grabbed and pulled like handles, I took in nearly half of it.
"Haa... huff...?"
...However, unlike Seo Woojin's cock, which I had become somewhat accustomed to because we had sex so much, my sister, who was lying side-by-side next to me, was doing it much more intensely than before. Because she was carefully crushing my peeled clitoris with her fingers.
"...Hey, Jiyoon."
"W-what... Ugh..."
"Woojin hasn't even shoved it all the way in yet... why is your waist lifting up?"
"You know... Sister, you too..."
"...Well. I'm not sure... Is it because you have a body that feels things easily?"
"Ah, a... hiik...!"
Yesterday, no, just a moment ago, she was barking at me whenever she saw me, but because my clitoris was being crushed in a way so similar to how I masturbate by my sister, who was wearing that usual playful expression—even though it hadn't even been 5 seconds since penetration—the pillowcase crumpled in my grip. And along with a moan filled with sincerity, I...
"Hu, ugh...? Hu...? Hu...?"
...Ridiculously, along with question marks filling my head, I ended up climaxing to the point where my waist was twitching.
"...Ha, ugh..."
"Ugh... Lee Hayoon, you crazy, bitch..."
"..."
"If you... bite... it's not allowed..."
"...Pfft..."
"Th-that doesn't mean... I want you to lick it... ...Ugh..."
Whenever I worried about what I should do if having a 3P while rubbing against my sister didn't feel good—*Eh, I'll just pretend it feels good even if it doesn't*—those ridiculous resolutions were shredded to pieces in my head every time my sister stimulated my nipples with her soft lips. Every time my sister, having flipped a switch, squeezed and teased them with her teeth. Every time she lightly licked the area around my nipples with her tongue. I would lose all pride and stand my nipples up stiffly.
Having sex like this with my sister. I had only thought, 'It doesn't matter.' I had never thought, 'It will feel good.' ...Not really. If anything, I had been thinking about how long I could hold back the urge to gag.
"Huff..."
"Yeah, ugh..."
"..."
Lick, lick. While my sister was flicking the tip of my nipple with her tongue, Seo Woojin, who had been waiting quietly, moved his waist lightly. I didn't express my thoughts—like telling him to stay still for a moment, or telling my sister to stop, or honestly saying that I felt like I was going to die from the pleasure. Instead, I was just a bitch-like girl spitting out moans into the air. I was embarrassed. It felt so good. I felt like I was going to die.
"...Huah..."
"Haa..., he..."
"Umm... everyone licks like this in porn. ...It doesn't taste like anything, though."
"...Of course... Sister, you idiot, ah..., ...?!"
"..."
"Hey, Lee Hayoon..., Seo Woojin...! W-wait..."
"..."
"...Ough..., ugh..."
Having my stiff nipples soaked in my sister's saliva while panting. Having my lower abdomen pressed slightly by my sister, who had a pouty expression, and spitting out vaginal fluid, *tsuruk*. ...Haak, haak, Seo Woojin, who added a slow sigh to my hot, sloppy breath, shoved it in with force to the very deepest part, and with a sound so embarrassing I wanted to die—*pyuut, pyuut*—I dirtied Seo Woojin's muscular lower abdomen with transparent liquid. Clinging to my sister's pillow to endure it, gasping for breath. When Seo Woojin pulled his cock out, and there was the sound of jelly rubbing against my lower abdomen. The fact that I had shown my sister, who had started licking my breasts again, how nervous I was, swallowing my saliva over and over. Being shoved in all the way to the portio, with my lower abdomen pressed firmly by my sister, and being pounded into the portio over and over again. It was embarrassing, and it felt so good, that... with my vaginal fluid dripping, I felt like I was going to die.
"No, don't touch there, I told you..."
It's not strange at all that Seo Woojin knows all my weak points. However, my sister. Because my sister knows my body strangely well, an excessive amount of pleasure piles up in layers. It's the same with her biting my nipples playfully right now. It's the same with her stimulating the other side by pressing down with her fingers as if she were squeezing out milk. ...The timing of her reaching down again and pressing her hand against my lower abdomen, which bulges slightly every time Seo Woojin thrusts, *fuck, fuck*, is terrifyingly to my taste, and the way she licks my nipples gently right before I climax, keeping me on the edge and making me climax consecutively... is also... the same.
No matter how much we are both women, we must have our own preferences, but the way my sister stimulates me is so much to my taste that the tingling afterglow that makes me feel like an idiot never ceases.
"Sister, sister..."
"...Why do you keep calling me?"
"I've already gone over 5 times... wait, just wait a moment, stay still..."
"...I don't want to."
"Why...!"
"Because Woojin... ...Ugh... likes it..."
"How can you say that...?! Hiik?! Hiuk...?"
Along with the thought, *How can you say that?*, Seo Woojin, who had only been moving his waist moderately until now, began to press down with his waist like a beast, *pang, pang, paang*. And he did it while holding my pelvis with only one hand. His other hand was shoving into the pussy of my sister, who was lying next to me licking my nipples, while he crushed my uterus violently. If this continues, I'll definitely break. Whether it's my body, which has become too sensitive to sensations because I'm receiving so much pleasure I never usually feel, or my head, which has become a mess because of that pleasure and can only think 'it feels good' while sticking out my tongue and moaning—at least one of them will break. I had intended to mock my sister who was masturbating in defeat in the corner of the bed, but right now, it's not the time to worry about things like victory...
While I was listening to the sound of my own heart pounding like crazy as I shivered, my waist trembling...
"......Ah...?"
Seo Woojin's wet hand. Seo Woojin's hand, which was clearly dry and burning hot, grabbed my thighs and pushed them upward. ...As if to say he would use me like an onahole. In front of my sister, with her younger sister. As if... he was going to mate with me in earnest...
"Haa... huff..."
Unlike when he just pounded away quickly, Seo Woojin's cock, bearing his full weight, pressed hard against the end of the portio. Even though it wasn't the usual doggy-style position, but rather an awkward position with my waist curled up, the moment the glans reached the end of the vaginal wall, my body automatically poured out vaginal fluid. ...Even when he pulled his cock out, my mouth even went, *Ah—*, spitting out a voice full of regret for anyone to hear.
"......Ung, ugh?! Ugh...?"
*Fuck, fuck, fuck.* When he pounded his cock in to the point where the bed let out a creaking moan. Even though my sister was watching from the side with an envious gaze. ...Watching that, I didn't even have the leisure to show a smirk that I had won. Because it felt good. Because I wanted more. I hugged the body of the male who was violating me tightly, leaving... sorry scratches on his back. And I let out moans.
"Hey, Woojin."
"...Yes, huff... Noona..."
"...Is Jiyoon's side perhaps more pleasurable? ...Like, when having sex?"
"..."
Wanting to be chosen instead of my sister, I unconsciously squeezed my vagina tight.
"...There's not much difference. In my... opinion."
"...Really? I read on the internet that it's different for every woman..."
I knew the hand stroking my hair was my sister's, but I couldn't shake it off, nor could I be happy, so I just let him pound his cock into me noisily, *paang, paang*, in that state.
"Sis...ter... That, saying there's not much difference..."
"...?"
"...Because of this..."
"..."
Before my sister, who had stopped stroking, could tell me not to say crazy things, I directly pressed my fingernails into Seo Woojin's back to give him a signal. ...When he scraped my vaginal wall and pulled his cock out. I, too. Reached out my hand slightly, grabbed the edge of the rubber membrane. Pulled it off. And threw it toward where my sister was.
"...Hey, Seo Woo...jin..."
"..."
"Want to try it raw...?"
"..."
"Then the feeling would be completely different..."
"..."
"I'm also on a safe day..."
Even though I had already taken off the condom, I pretended to only be making a suggestion. I had already had raw sex a few times, but I pretended it was my first time. Seo Woojin, too, using me as an excuse. Pretending it was his first time. Pretending he was so excited he couldn't hear anything. ...No, in the quiet bedroom because my sister really hadn't said anything. I had naturally thought she would tell me not to talk nonsense, but next to my sister, who was just picking up the condom without a word, he pressed his raw cock into me.
"......Hiiik...♡"
Raw. Sex for the purpose of mating, *fuck, fuck, fuck*. In front of my sister. Noisily. We committed it.
"...Hey, Woo...jin."
"Huff..."
"Isn't this... better...?"
"..."
To my question, which I had asked instead of my sister, he didn't even answer. ...With a gaze that looked like his reason had finally snapped. Looking only straight down into my eyes. He pounded like a beast. And with his glans shoved in as far as it could possibly go. Seo Woojin, this trash-like... ...man.
"......Haa... .........He...♡"
Inside me. In front of his girlfriend. ...He filled me up to the brim with semen.
"Haak..., haak....... ...Seo Woo, jin.... ...Kiss.... Hurry..."
Because he poured it in so greedily, I could feel it overflowing out of my vaginal opening even without him pulling his cock out. Immediately after he pulled it out, I could feel the semen that had been packed tight inside me spilling out.
"......"
...Right next to us, my sister, who was watching while clutching the used condom and wiggling her fingers. Just by looking at her slightly opened mouth and her flushed cheeks, I could tell what she was thinking while watching us kiss sweetly.