The Story of How I Took My Sister's Cherry

The morning light had already broken.

Maybe it was because I'd pounded away so hard, but the area between my legs was throbbing like crazy. How long had I even been lying here? The last thing I remembered was slamming into my older sister's pussy like a dog in heat. Had I actually slept at all?

"Noona."

"…Yeah."

My sister lay face-down with her legs spread like a frog. Starting from her pussy, a translucent puddle had spread all the way to the edge of the bed. Now that I looked, the spot where I was lying was soaked too. There hadn't been anyone pouring water on the bed, so how had it gotten like this? They weren't going to make us pay for it, were they?

"What are we going to tell Mom now?"

"I told her I was sleeping over…."

"Noona, you're the best."

"Right?"

At least that lifted one weight off our shoulders. I'd been worried she might have been concerned about us not coming home so late, but it was a relief that wasn't the case.

"Close the curtains…."

"Why? The view's nice."

Morning sunlight poured through the wide-open glass windows. Now that we'd gotten everything out of our systems, I could finally appreciate the amazing scenery. It was a shame I hadn't seen the night view that had looked so incredible yesterday, but after seeing something even more amazing, it didn't really matter.

So this is what it feels like to no longer be a virgin….

Somehow, we'd taken each other's first times. The proof was right there in the drenched bed and our completely naked bodies, shamelessly exposed.

"…Why is it hard again?"

"Morning wood…."

Everyone knew what happened to guys when they woke up. Even if you got hard during an exam or didn't sleep at all, your dick had a mind of its own.

"Ugh."

Before I knew it, my sister had grabbed my cock. She shook it up and down like a toy, then took it straight into her mouth.

"Ah, aah…."

"What? I didn't use my teeth this time."

"It hurts because we did it too much…."

It had only hurt right after jerking off five times in a row, and it was usually fine after sleeping. But because of how hard her pussy had sucked me in, the pain seemed to be lingering longer.

"Should I stop?"

"…No."

"But you said it hurts."

"I just… like it when you do this, Noona."

"……I swear, you're impossible."

My sister grumbled but took my cock back into her mouth. Her lips worked the head, sucking and teasing, while her tongue licked the sensitive spot behind it, forcibly milking out what little semen was left.

"Ugh… mmph…."

"Ah… it hurts…."

"Then should I sth—"

"No… keep going…."

I kept feeling that strange place between pain and pleasure as I watched her focused expression. When I stroked her hair, her slightly annoyed face softened with pleasure.

"Slurp… shluuurp…."

"It's coming… all of it…."

"Shlurp… mmph…."

Even though I tried to hold it back, the relentless stimulation on my glans forced it out. It was just a few weak spurts, but the smell was so thick it reached my nose. And she'd only given her first blowjob yesterday—how was she already this good? Had she been practicing on ice cream or something?

"Haaap…."

"Haa…."

My hips lost strength as I came against my will, and my legs trembled. Now I understood why guys called it a mandatory defense match and tried to avoid it. It really felt like she was sucking out my life force. And if I resisted the wrong way, she might bite it off, so I couldn't even fight back.

"Mmph… haa…."

My sister sucked out even the last few drops. She'd gagged the first time she swallowed yesterday, but she seemed fine now.

"…Does that taste good?"

"You've never tried it? Want a taste?"

"What the hell…."

It was my cum, not hers. Why would I eat it? Just thinking about it made me not want to. I was curious what it tasted like, but not enough to actually try it myse—

"Ow!"

The moment I tried to get up and get dressed, my body collapsed with a loud crack. My sister casually walked toward the bathroom and said,

"That's what happens when you use it so recklessly."

"…If someone hadn't kept begging me to fuck her harder. Who was the one saying yesterday that she felt like she was going to break?"

"W-when did I?!"

"You didn't say it was me, did you?"

"……Whatever. I'm going to wash up."

Having nothing left to say, she stuck her tongue out at me and disappeared into the bathroom. But was she really okay? I'd thrust so hard it felt like I'd hit the end of her cervix.

Ah, it hurts so fucking much….

That wasn't the real problem right now. The aftermath of last night was hitting me all at once.

"Ow, it's cold."

When I tried to lie back down, the bed was still too wet. What was I supposed to do? It looked like I'd have to walk around completely naked. Guess Noona won this round. Ugh.

"…Oh right."

I'd completely forgotten about something.

So why the hell did she let me touch her breasts? That was what started this whole snowball rolling…

…Not that I was complaining.

"Huh…?"

The gallery was in chaos for a completely different reason. Sure, Noona had promised to buy the Pa-ttak dinner when she became one, but I didn't think it would cause this kind of reaction. We hadn't even told them when we were meeting—

No. This sister of mine, seriously.

"…Ugh."

"What do you mean, ugh? This isn't the time to be acting cute."

"Sorry…."

"Haa…."

I showed my sister, who had just come out of the shower looking completely relaxed, the chaotic gallery. She finally seemed to grasp the situation and opened her own phone to check the gallery.

This was the post from the ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠night before last—right before Noona and I first met as Ju-ttak and Pa-ttak. Up to this point, the comments were relatively normal. The problem started after that.

These were comments posted four hours after the original thread went up.

After that, comment after comment kept coming, all waiting for us to return. If I'd known this would happen, I should've checked at least once. I was too distracted by Noona. Seriously.

"What are we going to do now…?"

"What do you mean? Just play it cool."

"…Is that really okay?"

"These people don't even know we're siblings anyway. We'll just say… we forgot to update them or something."

"…Will they buy that?"

"If not, we'll just push it again."

"Last time you pushed a post and the whole gallery lost their minds. That's why you made me a Pa-ttak."

"…Yeah, that's true."

It was a mistake, but Noona had deleted a post before. If one accidental deletion caused that much chaos, deliberately deleting one this time would get her replaced one hundred percent. Honestly, I didn't care if I got stripped of my position, but since Noona seemed to hate that idea, I couldn't suggest it.

"I'll take care of it for now."

"How?"

"I have my ways."

I had no choice but to sacrifice myself. Since everyone already thought Noona was a girl, if she posted first, they'd definitely take it in a weird direction. Before they could speculate and reach their own conclusions, I would set the truth first. Mixing facts with lies was something I was very good at.

[Cancel][Post]

"Is it really okay to post this…?"

"I don't know. It'll work out somehow."

Once we got home, I quickly wrote the post. Noona leaned over my shoulder, pressing her chest against me as we both stared at the screen.

"What if you get banned?"

"Even if I'm blocked, people can still read the post."

"……I was so excited to finally have something to write about."

"…What?"

"N-nothing."

"…Were you going to write about what happened yesterday and today?"

"I was so happy! I finally got to post something now that I'm Ju-ttak!"

"……Why would you even write that?"

"So you could read it, Jiyun."

"I'm the one who lived it?"

"I wanted to know how the person involved would feel reading it."

"…Like that panty thief?"

"Yeah."

"Haa…."

This crazy sister of mine. Using me as writing material. Did she think I didn't post because I didn't want to use her as material? I wanted to post about fucking my sister too. Not some made-up story—I wanted to write the 'real' thing.

"Then you post it, Noona."

"Is that okay?"

"Yeah. Just don't mention the ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠Pa-ttak stuff."

"Okay. Got it."

She deleted what I'd hastily written and simply posted that she'd been in pain all day.

"Write it, Noona."

"…Okay."

I gave up my seat and she sat down. Of course, I didn't forget to log out first. Once seated, Noona began typing without hesitation.