The Story of Seeing My Sister Masturbating on Leave
I saw my older sister masturbating. [The story of seeing my older sister masturbating during vacation]
My sister and I were already close, but after our parents divorced when we were young, we became even more tightly bonded. With a three-year age gap, I never dared talk back to her. This is something she told me about later. One day, this happened.
“Jiyun, when we get home let’s have some ramen—huh?”
I think she was eight and I was five. We’d been playing at the playground and were heading back when she realized I’d disappeared. She claims I never let go of her hand the whole time, but that has to be a lie. The important part is that I really had gone missing.
“Jiyun! Where did you go? Jiyuuun!”
Obviously we didn’t have cell phones back then. My sister said she searched for me for a long time. The funny thing is she didn’t actually go anywhere—she just kept circling the same spot over and over. No wonder she couldn’t find me. Lol. Then some random uncle saw her crying and asked what was wrong. When she told him she was looking for her little brother, he said there was a small kid wandering around alone.
“Uh… yeah. He came down from somewhere. Is that the boy?”
“Jiyuna!”
“Bro.”
The uncle gave her some candy to calm her down and followed as she ran over. And there I was. It was the building with the public bathhouse—the kind where you can see the elevator from outside. I guess riding it up and down looked amazing to me. She said I kept going up and down for who knows how long. Even thinking about it now, it’s fucking hilarious. But my sister was pretty incredible too. Following a stranger at that age? Brave.
“Mom~!”
When Mom got home from work, my sister was sobbing her eyes out and the whole house turned into chaos. Maybe that was the moment my talent for technology first appeared. I’ve always loved gadgets, and it seems like it started right then.
After that, my sister took extra good care of me. In elementary school we were practically glued together. We walked to school and back home side by side every day. I was so innocent back then that I genuinely believed I would marry her when I grew up. I didn’t understand family ties at all—I thought any boy and girl could be together.
“Sis! Where are you going?”
“I’m starting middle school now. You go by yourself.”
But once she became a middle-schooler, puberty hit and she turned incredibly cranky. We grew distant like normal siblings, not really fighting but just avoiding conversation altogether. At least we got separate rooms out of it, which made jerking off a lot more convenient.
School years passed without much drama. Then I got my first military leave. I thought the house was empty, so I finally let loose after holding it in at the training camp. The second I started coming, I heard rustling from somewhere. Fuck. I yanked my pants up without even cleaning myself and the door opened.
“What? You’re on leave?”
“Y-yeah…”
“You should’ve said something…”
“It was so quiet I didn’t know you were here…”
“What’s that smell? Air the room out.”
“Okay.”
I thought I was dead. After she left, I realized a little cum had gotten on my hand. Fuck. I’d talked to my sister with jizz still on my fingers. After I cleaned up, time passed and my final leave came around.
I’d just finished field training and hadn’t jerked off for five days. The moment I got home I was ready to go. I started pulling my pants down when a strange atmosphere hit me.
“Sis? You home?”
The memory of almost getting caught last time made me call out first. No answer. I was about to start anyway when I remembered how quiet it had been before, so I went to check her room. Her door was cracked open just a little. I peeked through the gap.
“Mmm…!”
Fuck. She was lying on the bed with her panties off, earphones in, holding her phone in one hand while the other rubbed her pussy. I know everyone masturbates—me included—but seeing it in real life broke my brain. The first real pussy I’d ever seen in person belonged to my own sister. The shock killed any urge I had to jerk off, so I pretended I hadn’t seen anything.
“…What? When did you get here?”
“Just now. I was so tired I passed out.”
I acted like I’d been sleeping the whole time. After that we grew even more awkward around each other. Thankfully nothing happened then, but after I returned to base I couldn’t stop thinking about it. The next day I was discharged, but that image wouldn’t leave my head. Even after I got out I couldn’t look at her properly. Every time I saw her face, that scene replayed. What the hell am I supposed to do now?
It’s not full incest, but I just wanted to share the story of what happened with my sister. Heh.
After I hit the register button, my sister suddenly walked in and I panicked, mashing upload and Alt+Tab at the same time. Thank god I used a tame title. I wonder if the post actually went up.
“This thing’s offline…”
I deleted and reinstalled the printer driver and fixed the problem. There were probably easier ways, but I was too lazy to bother.
“It’s working now. I’m heading out.”
“There’s ice cream in the fridge. Eat some.”
“Okay.”
My older sister, Byun Jisu. She graduated college and works a normal office job. Well, maybe not that normal—she got promoted to assistant manager only six months after joining. It’s weird that someone who can’t even work a printer got promoted that fast, but the company seems fine since she’s still working there.
“Whew.”
She probably didn’t see it, right?
The post I just wrote was half fiction. I based it on real childhood memories, so some parts are true. Dad really did divorce Mom when I was five, and we did grow close because of it. The elevator incident actually happened too. But everything from the military stories onward was made up. I enlisted after phones were allowed, so I jerked off plenty of times. I never got caught by my sister during leave because I only did it when she was at work during the day. We’ve never had any real “that kind of incident”… wait, actually we have. Once.
“Jiyun!!!”
“What’s wrong?”
“Come kill this for me!!!”
“Ugh, so annoying…”
When a cockroach appeared in the bathroom she asked me to catch it. I walked in and she was standing there completely naked like it was nothing. That was the first time I saw a woman’s naked body in real life. My eyes unconsciously scanned my sister from head to toe.
“Sorry for showing you this.”
“…It’s fine. I got it. Done?”
“Yeah. Thanks.”
That must have been the moment I first started seeing her as a woman.
♠
……
Luckily the reactions were good. Who cares if it’s made up? That’s what this gallery is for anyway. I got what I wanted, so it doesn’t matter if it gets deleted. It’s a throwaway account anyway.
The place I posted to is the Friendly Siblings Gallery, also known as the Incest Gallery. They probably named it that because they couldn’t use the word “incest” outright. Most of the posts are real sibling stories or writings full of twisted sexual fantasies. There’s one head moderator—Ju-ttak—and one assistant—Pa-ttak. Since the gallery is small, it runs pretty smoothly except for the occasional trolls. Though calling a place full of this kind of content “comfortable” is debatable.
“Ah, shit.”
I wanted to enjoy the comments a little longer, but when I refreshed, the post had already been deleted. I thought it would last at least a few hours, but it got taken down in under thirty minutes.
Even if it was made up, isn’t that too fast…?
Unlike other galleries, this one has a special rule besides the usual no-trolling policy.
Only post real stories.
If the head mod decides a story is fabricated, they delete it immediately—even though they barely post anything themselves. I don’t understand why they care so much about truth in a gallery about incestuous desires, but no one complains. Probably because the forbidden nature of it all makes the guilt feel more real.
But why am I even browsing this gallery? Damn it. This is all my sister’s fault for planting that image in my head.
“Jiyun.”
“Yeah.”
When I heard her coming I quickly hit Alt+Tab and switched screens. I wasn’t even watching porn, but I still hide it out of habit. Not that what I was looking at was wholesome, either.
“I’m going to the convenience store. Want me to get you anything?”
“Um… nothing really. Oh, a black face mask. And some cup ramen… army stew flavor.”
“Got it.”
“What are you buying?”
“Pads.”
“Ah… thanks for the honesty.”
Any normal person would freak out hearing that word, but it just makes my brain short-circuit. Why does she say it so casually? She could’ve just said the brand name. Though I don’t actually know the brands. I was once again impressed by my sister’s consideration.
“Turn off the light in your room before you go.”
“I’ll be right back, why bother?”
“Still, you should turn it off. You always leave it on.”
“I turn it off when I leave for work.”
“I’m the one turning it off now.”
“Ah, right!”
After she left, I went to the living room and, sure enough, her room light was still on.
“I keep telling her to turn the lights off when she leaves…”
My sister hates the dark so much she keeps the lights on even during the day. I’ve asked her why several times, but she only says she doesn’t like darkness. She never gives a real reason.
“Huh?”
When I turned off her light, I noticed her monitor was still on. She doesn’t even play games, yet she uses a huge screen for no reason…
“Wait…”
Among the split windows, a browser took up half the screen. The familiar words and UI caught my eye immediately.
…?
Why was this open on my sister’s screen? And it was the administrator menu.
ILikeSiblings.
That was the Ju-ttak’s username.