The Posts Were All About Me

Pa-ttak. In other words, it was the list of posts written by my older sister’s other personality.

The titles alone were enough to make my head spin, and the wording made it painfully clear why gender conflicts kept erupting in the gallery. If the little brother in those posts hadn’t been me, I would still be thinking exactly the same things right now.

So… my sister was losing her mind with want, desperate to fuck me?

"……."

"……."

After two full laps around the park, people gradually began to disperse. I wanted to say something, but I held back, worried it would embarrass her.

Honestly, I like it though.

I had never been involved with a woman in my entire life. Maybe that was why my tastes had twisted this far. To the point that any pretty girl would do it for me.

"…Jiyun."

"Yeah."

Only after another half lap did my sister finally speak. The timing was perfect—the lights hit her at just the right angle, creating a dramatic contrast. Parts that should have been invisible in the darkness suddenly stood out in sharp relief.

"……Are you disappointed?"

"No?"

She wasn’t some ugly gorilla. Who in their right mind would turn down a gorgeous older sister who wanted to fuck them? I didn’t have any childhood trauma that made me reject her. If anything, I might have sensed it subconsciously all along.

"Why? Most people would be disappointed if it was a family member, right?"

"…I already told you. It’s fine."

I almost said I’d actually enjoy it if she did it to me, but I swallowed the words. Saying that would only make her think I was upset.

"Isn’t it because it’s me?"

"…What?"

"Because your sister is pretty."

"……."

Was it my imagination, or had the distance between us shrunk? When I glanced sideways, it clearly wasn’t just my imagination. My arm was currently pressed against the soft flesh of her upper arm.

"Say it again."

"…Say what?"

"What you just said."

"What?"

"Before that."

"……That my sister is pretty?"

"……."

She stared at me, eyes boring into mine. Her flushed cheeks and trembling gaze made her look unbearably cute. It was summer, so the air was stiflingly hot.

"Then… are you interested in that sort of thing?"

"…What sort of thing?"

"……That sort of thing."

She pointed at her phone, silently telling me not to play dumb.

The Sibling Harmony Gallery, commonly known as the Incest Gallery. Its entire purpose was to let people watch siblings develop feelings for one another, see those feelings realized, and ultimately become one. Pure vicarious satisfaction.

In short, she was asking if I was into siblings having sex.

"……It’s not that I’m not."

The reason I’d started visiting in the first place was the sheer amount of depraved posts. I had never even touched a regular erotic novel and found them boring, but the Incest Gallery was different. Knowing every single one of those unhinged stories was basically a personal essay made it arousing.

"I… see…."

She subtly reached out. I took her hand without hesitation.

"How does it feel? Holding hands as siblings—what do you feel?"

"What…."

"We’re holding hands as brother and sister."

"…We used to do it all the time."

Holding hands with her was second nature. There was nothing particularly special about the sensation, but ever since we were little, whenever she offered her hand I took it. If we were going somewhere together and got separated, it was a hassle, so I’d grab it. I had only recently become conscious of the act itself.

‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠

"…Then what about this?"

"…We’ve done this plenty too."

This time she linked arms with me. We had done that often as well. Not so much in summer, but on cold winter days we used to walk arm-in-arm all the time.

"What about you?"

"Honestly… I don’t feel much either…."

We weren’t strangers. These ordinary things were familiar; we had done them countless times. Incest wasn’t this. We had to go further than these normal gestures.

"…Then what about this?"

"……."

The same linked arms, but she pressed in much deeper this time. If we had been wearing thick coats, I wouldn’t have felt anything, but now the sensation was unmistakable. The soft, teardrop-shaped mounds enveloping my arm.

It felt so real that I actually felt a little disappointed by the bra cup in the way.

"A little…."

"A little what?"

"No… it’s just…."

After only ever watching others do it, experiencing it myself made my heart drop. Wait, these bastards got to feel something this good and still pretended to hate it? Their acting was next-level bullshit.

"It feels good."

"That’s it?"

"Then how am I supposed to say it?"

"…You know, like ‘I can clearly feel the shape.’"

"……."

The slight irritation from the bra reached my throat, but I swallowed it along with my saliva. Had my heart started pounding so hard that I couldn’t even hear the surroundings anymore…?

"Aren’t you going to do anything to me?"

"We’re outside."

"…What exactly are you imagining?"

"…Nothing."

I had thought she might want me to press my hips against her, but apparently not. What kind of outdoor skinship did guys usually do with girls? I really should have paid more attention when watching couples.

"…Then at least this."

"Eut…."

I copied the couple that had just walked past. Just as the boyfriend had draped his arm around his girlfriend’s shoulders, I wrapped mine around hers.

"How is it?"

"…Nice."

"…Good."

We walked like that for a long time. My arm strained to feel every inch of her, and she kept her hand on mine like it was a purse strap, refusing to let go.

"……."

I gathered my courage and moved my hand a little closer. The strange pressure against my fingertips. If I lowered it even slightly, I would reach her breasts, so it felt like I was pressing right against that boundary.

"Why are you subtly sliding downward?"

"…!"

I was caught instantly. My hand froze on the spot. What now? Maybe this really was crossing the line.

"Sorry…."

"You don’t have to apologize…."

With her permission, I used my other hand to secretly adjust the raging erection in my pocket so it stood upright. It felt like it was about to burst. What the hell was I supposed to do?

"…Do you want to touch?"

"……."

She stopped walking, so I stopped too. There were almost no people nearby.

"…Then go ahead and lower it."

"……."

We started walking again. Now that I had permission, it was strangely hard to move. Could I really do this? My heart overwhelmingly voted yes while my reason voted no—a perfect storm of conflicting impulses. I agonized so hard my fingers started to cramp.

"Hurry up."

"…Okay."

Urged on by her, I gave in to the yes vote and lowered my hand another centimeter. The faint pressure I had barely felt at the tips of my middle and index fingers suddenly became vivid. Without even realizing my heartbeat had drowned out all sound, I took a deep breath and slid down another three centimeters.

"Huu…!"

"Kup…."

An involuntary sigh escaped me. Unlike that guy who had only managed to grope her four times—realistically three—I could press as much as I wanted. There were still people around so I couldn’t actually knead them, but the thrill that ran through my fingertips from just pressing was unbearable. And what was that sound she just made? It startled the hell out of me.

"…How is it?"

"……."

My hand ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠had no intention of stopping. The damn thing refused to listen to my brain. My brain was screaming stop, but my hand kept moving because it felt good.

"Ow."

"You’re groping ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠too much."

"Sorry…."

Thanks to her slapping the back of my hand, I finally managed to stop. After regaining some semblance of reason, I shoved my hand into my pocket to seal it away so I wouldn’t touch her again.

"…Shall we head back?"

"Yeah. It’s getting chilly."

A slightly cold wind blew. We left the park and arrived in front of the subway platform.

"Jiyun."

"Yeah?"

Right before we went down the stairs, she turned around. Our eyes met. The way she looked up at me made my barely-calmed heart start hammering again.

"How was it?"

"……It was good."

"Then…."

She took one step closer. She adjusted the distance delicately, almost rising onto her tiptoes but not quite.

"Somewhere better—"

"Ah."

A sudden phone call.

"In Jamsil."

"Yeah, I’m with her. We already ate."

"…I’m heading back now. Why?"

"…Okay. Sleep well."

I wasn’t angry with Mom. It was just that the call felt incredibly disappointing.

"Was that Mom?"

"Yeah."

"What did she say?"

"To come home quickly."

"…I see."

"Weren’t you about to say something?"

"Mm. No, it’s nothing."

Instead of answering my curiosity, she held out her hand. I took it, lacing our fingers together, and we walked home like that. We didn’t interlock fingers often, so the feeling was fresh and new.

"…What about Mom?"

"She went to bed first."

Our house was pitch dark. Since my sister was afraid of walking through darkness, I escorted her all the way to her room and turned on the light.

"You shower first."

"Okay."

The atmosphere stayed awkward. The moment I took off my underwear, my painfully erect cock twitched violently.

"Haa…."

I covered my mouth with the hand that still remembered the sensation, imagining it. Even though the bra had been in the way, a breast was still a breast. The pleasure of touching what I had only ever seen with my eyes was no joke. The feeling still hadn’t faded, so I didn’t even know what to say.

"…….."

After finishing my shower, I returned to my room. In the quiet stillness I closed my eyes and imagined it. What would it feel like to touch her bare breasts?

"…Are you asleep?"

"……No."

She ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠crawled into my bed and lay down beside me. The damp scent of her shower flooded over me.

"Why…?"

"The meeting isn’t over yet."

"……Right, that’s true."

Today we had met as Ju-ttak and Pa-ttak. Even though we had eaten together, it was still technically a meeting.

"Look this way."

"……."

I turned to face her in silence. Her unnecessarily cute face was right in front of my nose. This was dangerous. Her lips looked so fucking kissable.

"Has our dear Pa-ttak ever kissed anyone before?"

As if she had read my mind, she asked first.

"…No. What about you, Ju-ttak?"

"……I haven’t… either."

"Why not…?"

"Because as a Ju-ttak, I need to know what I’m talking about…?"

"Then… shall we practice together?"

"……Yes."

Still lying down, I placed my hand on her shoulder. My heartbeat was even louder than when I had touched her chest. Ah. What if I couldn’t actually kiss her? I had never even done a proper kiss since I was a kid.

"…Lips."

"They’re touching."

At some point, our lips had already met. I closed my eyes and imagined it, recalling every kiss scene I had ever seen.

"Mmph…."

Slowly, carefully, I began to move.