The Risk of Unprotected Pleasure
Internal ejaculation. Unprotected sex. It feels better than I imagined, but it’s something I shouldn't be doing. What if Woojin accidentally finishes inside? What if I end up getting pregnant just like that? How on earth could I… "Inside… if you ruin my insides like that… you mustn't…."
It feels better than I imagined, but it’s something I shouldn't be doing. "…For someone saying you shouldn't, you have a look on your face that says you like it quite a lot."
"No, hey…."
"You were the one who gave permission in the first place, Hayoon."
"I didn't give permission…! I was just, breathing…."
"You gave permission."
"What are you…?! W-wait a second…."
It feels better than I imagined, but… it feels like something I shouldn't be doing. …Still. It feels even better than I thought it would….
"Ugh? Uh? Ugh…?"
Every time Woojin, who is pressing down hard on my thighs, rams himself all the way to the end of my vaginal wall, my mind goes blank. Every time he pulls his stiff, erect cock out to the entrance, only to crush my cervix without hesitation, a shameful moan that I don't want my younger sister right next to me to hear leaks out.
Just as I start to feel the natural emotions of worry or anxiety—what if he finishes inside?—my cervix, which has never received semen before, is crushed roughly, and my mind is washed over with pleasure. Just as the thought that I should stop now starts to bloom, Woojin, who has pressed his waist completely against my body to ruin my insides with his shape, forces another sloppy moan out of me.
I had intended to at least glare at him, but… perhaps it’s because my eyes are glazed over from the pleasure, as if I’d been drinking. Or perhaps it’s because, despite trying to glare, I was sticking my tongue out like a bitch, lapping up his saliva. The speed at which he was ravaging me didn't slow down; it only kept getting faster. …It’s dangerous.
"Whew…. If you hate it, tell me you hate it. Don't just look up at me with those teary eyes."
"…I, I wasn't crying…."
"…That’s not what’s important right now."
"Ugh…."
"You hate having sex that leaves you unsatisfied, don't you? But you can't handle being filled to the end? …Why? …Ah, because it’s dangerous?"
"…That’s… …Ah."
"You said you’d finish outside."
"Ugh…."
He releases my thighs, perhaps to catch his breath, and lightly pulls on my pelvis. I instinctively squeeze my eyes shut, fearing he might start thrusting roughly again, but instead, he pulls his waist back, withdrawing to the edge of my pleasure, and looks down at me with a playful smile. No matter how much of a mess my brain is, I know this action is an extension of the question he asked earlier: "You hate having sex that leaves you unsatisfied, don't you?"
So, I should… answer that I don't want to do this without a condom, or show him through actions, like pushing his lower abdomen away with my hands. Then I could promise him we’d only go to the edge, or tell him to use a condom instead of thrusting all the way in.
I calmed my ragged breathing and looked down at his cock, covered in my own fluids, staring intently… no, from an outsider's perspective, rather than staring intently, to be honest… I was staring blankly.
"……."
…First of all, I won't deny that… doing it raw feels better. If I could, I’d want to have sex with Woojin without a condom every time we meet. But doing that is… something only beasts living for reproduction would do. Doing it without a condom just because I want to feel good, like Jiyoon, carries too much risk. I should stop here before I get too excited and do something even more dangerous. I’m a year older, so I should act like an older sister.
With a sliver of my reason returned, I slowly brought my fingertips to Woojin's lower abdomen. But that was all.
"Hi, ugh…?!"
Press.
My fingertips, which had been stretched out to touch his body, curled slightly and pressed into his abs. …It was only natural, but his cock, which had been halfway out, forced its way back into me, widening the crack that had been tightly sealed. Even though my palms were now properly touching his body, trying to push him away, he acted as if he were daring me to try. Press. Once again, until his glans touched the very edge of my vaginal wall. Until I eventually just pretended to block him while reaching a light climax. …He mixes his body with mine.
"Why, why aren't you pulling out… why do you keep pushing in…."
"…You're swallowing your saliva while looking at my cock, yet your fingertips are hesitating as you try to push me away. It turns me on."
"T-that's not why…!"
The moment I tried to protest, his lower abdomen, which had only been touching my hands, pulled away sharply again. …No. If he pulls away like that now, and if he starts thrusting into my cervix again, my mind will surely go blank once more. So, my fingertips, which had been following him to push his body away, "…. ……Ugh…." this time, they couldn't even follow halfway before curling and stopping. Simply because it felt good to have his large glans scraping against my vaginal wall without mercy. Because my body knows from all the sex I've had with him so far that the further he pulls away, the longer the stroke he can deliver as he thrusts back in. And I know well from our past sex that it feels incredibly good.
…And I know the fact that sex without a condom feels even better than all those other times. Quietly.
"Hi, ugh………."
Just twitching in place, quietly. Without even saying the simple words to put on a condom, quietly. Until his hard abs touch my hands again, until he crushes my cervix with a thud, with all his might. Quietly.
"Weren't you going to push me away? Hayoon?"
"Heh… Heh…."
It wasn't that I hadn't heard the question, nor that I lacked the strength to answer, but I lowered my gaze slightly and let out a moan of pleasure instead of an answer. If I said yes, I’d become a pervert who gave in to the pleasure of raw sex, despite having said multiple times that contraception was the most important thing, and even having tried to push him away. But even if I answered no, the result wouldn't be much different. I’d just be a pervert who more honestly admits her true feelings than if I had said yes. It’s embarrassing. And, simply, it feels good.
Instead of pushing him away with all my might—he who has been stimulating the back of my cervix to the point of giving me chills—I bite my lip hard and claw at the bedsheets around my waist.
"…Heh. Sister, you must really feel good. …Should I wipe your saliva? It's flowing down the side of your lips."
"Ah…. Haa…. Shut… up…."
I tried to force my voice through my panting breath, but it was meaningless. Jiyoon, who didn't care about my answer, wiped my saliva with her fingertips, and with that same hand, began to twist my stiff nipples… biting and twisting them with two fingers.
"Ugh… Ugh…. No…. …Ah……."
Even in the midst of that, my ears were filled with the lewd sounds of Jiyoon, who was pressed right up against me, licking and sucking. …I don't know how aroused I became while leaving her to do as she pleased, but Jiyoon's tongue, which should have felt warm, now felt lukewarm. As I twitched my waist in response to a pleasure that felt better than having my breasts caressed by Woojin—but which I couldn't reveal because it was my younger sister's touch—
"…Eh, Woojin? Why…."
…Perhaps he felt not only sexual desire but a small pang of jealousy at our sisters' lewd lesbian act. He lowered his posture, and suddenly, he hugged my body so tightly it felt like I would break. "…Ah, …wait…. Slowly…?"
…He ignored my request and, as if scolding me for cheating with my younger sister, as if telling me to die of pleasure right here, he buried his face next to mine. Deeply, thud, thud. He began to ram into me with his thick glans.
Before my mind went blank from the pleasure, I tried to get a promise from Woojin again, speaking with great difficulty. "…Woojin. Woojin… no matter how good it feels…. if you finish inside…, absolutely not…."
"…No?"
"What do you mean 'no'…, ah…, ang…. ang…. Seo Woojin, you…."
However, with just those two short words, the memory of him saying he would finish outside earlier was gone, and it was so blatantly obvious that he wanted to ejaculate inside me. I kicked him with my heels, trying to stop him from scraping my vaginal wall so persistently that I couldn't say NO.
"I said no…. You idiot…."
"…You said it was a safe day. Earlier."
"What do you mean, suddenly my… period cycle, it might break…. …Ugh…. I don't know, anyway, it’s dangerous, so no…."
"Whew…. Lee Jiyoon, do you know Hayoon's cycle?"
"Not for sure, but roughly? As far as I know, it’s just a safe day right now…."
"N-no…! My fertile period is coming up soon, so, ugh, you never know…."
In truth, it was a fairly safe day. I told a lie that wouldn't work on Jiyoon, even if Woojin didn't know. …Is that why? Jiyoon, who had been watching me bark like a dog while lying next to me, giggling, suddenly said:
"…You can finish inside my sister. I, her younger sister, give you permission."
"…! Hey, Lee Jiyoon…. No, why are you… giving permission for that…. No…, ugh…?!"
"Well…. The probability of pregnancy is low anyway, right? And to compare whose body felt better, you have to finish inside my sister too, to be fair, right?"
"I don't need that kind of fairness…. Ah, wait…."
She had gently poured oil on the fire. "Whew…."
"Ah? Ah…? Ugh…?"
As Woojin stood up, grabbing both my wrists tightly, with my breasts—dirtied by Jiyoon's saliva—trapped between his arms, he thrust into me. Thud, thud. Below that, creak, creak. I moaned so loudly it was embarrassing to the neighbors living nearby as I was mated.
"…Did my sister use 2 tissues earlier? If you don't need to use more than 3 to wipe, then it’s a tie or a loss for me, right?"
"You, that's insane…. Ugh…. Stop……."
"Why. If my sister won, I was going to give up on Seo Woojin cleanly."
"S-stop…. …Ugh, ugh…."
Unlike me, Jiyoon, who seemed to be strangely enjoying this situation, stimulated my nipples ticklishly, just enough for the saliva on her tongue to touch them. She licked my nipples slowly, in a way that was obviously a provocation, making sure saliva splattered onto my face. I accepted his impossibly hard cock, which had taken the shape of his member, into the edge of my vaginal wall with a thud, thud.
"Ah, right. I think I saw this in a lewd manga. The part where he thrusts until the girl says with her own mouth to ejaculate inside her."
"…You, just stay quiet."
"Tsk…."
"Whew…. Hayoon. …If you want, I can keep doing this."
"…Hah, hah…."
"Hayoon?"
"Ha… ah…, ah…."
…Even though I had already painted my vision white so many times I couldn't count on my fingers, the climax wouldn't stop. Half-out of my mind, "Then should I stop caressing my sister here too?"
"…."
"…You pervert. Pfft…."
Rustle, rustle. Even though my younger sister was approaching incredibly close, I didn't even look to see what she was going to do. I only looked down at my breasts, which were shaking embarrassingly on the creaking bed.
"Sister. Sister."
"……, …Ugh…. …Hii……."
"…I'm not particularly keen on it, but well…."
"…Ugh, pfft…? Kiss…?"
In my daze, I shared soft lips and a somewhat familiar taste a few times. …And somehow, as I gave my body over like a sex toy to the even more intense piston-like thrusting,
"Pfft…. …With this, I'll beat my sister."
"Heh…? Heh…?"
"He's not ejaculating while kissing my sister, is he…. And you'd feel bad kissing me, wouldn't you…?"
"Suddenly, what are you… why are you doing this to me…. …Ugh, ugh…."
…With both hands tightly interlaced, he put his cock—which he said he’d only put the tip of—all the way to my cervix. With lips that were soft, yet not quite Woojin's. …With lips that were clearly Jiyoon's, we tangled our tongues until saliva dripped down.
"Suck…. Pfft…. Finish quickly. You pervert…. How long do I have to keep kissing my sister…."
"…Pfft…. Ugh, ugh…."
"As expected, sister…. You're less tight than before, so it's hard to finish…."
"……Ah, wait, if you really finish inside…. Hii……♡"
Hotly. I am being dirtied.
"I'm already full, I'm full of semen…. Stop…."
Like my younger sister. I am being dirtied.
"……Ugh…, hah…. Ah…."
Even though I had said so much for him to finish outside. When I was being kissed by Jiyoon, I was truly worried that Woojin's ejaculation volume would decrease, just as she said. …That I would lose to Jiyoon. That Woojin's heart might tilt even a little bit. Even before he finished, and until now, even though I could feel the semen overflowing out of my vagina, I hugged his waist tightly with my legs because I wanted to receive more. …While spouting the ridiculous nonsense that I didn't know what to do if he really finished inside, which sounded funny even to my own ears.