You have to listen to me
You have to listen to me
I felt like I was going crazy.
While talking to Seo-ah with just my head turned, I accidentally got too close to Ji-eun, and the moment my dick touched her back.
I definitely pulled my waist back the moment I felt a bit of pressure, trying to keep a distance where we wouldn't touch, but—

Squeeze— press—♡
'Wait, why...?!'
Ji-eun kept sticking to me, pressing her back against my dick.
I needed to calm my dick down quickly, if only to talk to Seo-ah about the pictures and video from earlier.
My hard, swollen dick was stimulated by the pressure felt from her lower back, and it had reached a state where I couldn't calm it down at all.
Did she not know what was touching her back?
Or did she just not care if Seo-ah caught us in this situation?
While I was flustered by that unknown intention, I continued my conversation with Seo-ah.

"H-hold on, let's go to my room... and talk."
In the end, I heard Seo-ah's unavoidable request for a private talk.
"..."
I was in a dilemma.
If I didn't follow Seo-ah now and avoided the conversation.
Not only would it be hard to repair my relationship with Seo-ah, but I didn't know what she might do to Ji-eun, who was still rubbing against me, whether she knew it or not.
But if I stood up now to follow Seo-ah... the problem was my erect dick, which was bulging out of my pants so large I couldn't even hide it.
The dilemma I had to resolve in such a short time reached one conclusion.
'...Either way.'
I don't know why, but Seo-ah even has a video of me masturbating.
Therefore, judging that getting caught with an erection was less of a risk, I whispered quietly to Ji-eun, who was still rubbing her back against my dick.
"...Noona. I'm going to go talk to Seo-ah for a bit."
Ji-eun hesitated for a moment after hearing that.
I felt her back stiffen slightly.
She seemed to hesitate for a long time, and then I heard a reply in a small, disappointed voice.
"...Okay."
After hearing that hesitant reply, I took a deep breath.
I couldn't hide it completely... but it wasn't something I should show off confidently, either.
For now, I covered it as best as I could with my hand, and the moment I turned my whole body to face Seo-ah.

"...??!"
Seo-ah, who hadn't been able to make eye contact and had been avoiding my gaze the whole time we were talking, froze with her eyes fixed exactly on my crotch.
...It seemed I had definitely been caught.
Seo-ah's eyes wavered, and her face turned bright red in an instant.
Her expression was filled with panic as she looked back and forth between my lower body and Ji-eun, who was still sitting on the bed.
I tried to act nonchalant as I approached Seo-ah.
"Let's go."
I took Seo-ah, who was frozen as if she'd lost her soul, and brought her out of the room.
'...Fuck.'
The situation was truly a spectacle.
I was supposed to be going to talk to hear Seo-ah's explanation.
Now, it was I who had to explain myself.
While we entered Seo-ah's room, which was right across from us as soon as we opened the door, only a heavy silence flowed between us.
Click—
She opened the door and went in first.
I swallowed a sigh, followed her in, and sat on the edge of her bed just like before.
Seo-ah sat in the chair in front of her desk and didn't say anything for a long while.
She looked like she was agonizing over something, fidgeting with her hands.
The silence grew heavier and heavier.
'...I should be the one to speak.'
Unable to bear the long silence, I made up my mind and opened my mouth.
"That... with Noona—"
At that moment.
Seo-ah suddenly started moving.
Without a word, she turned on the computer.
The monitor brightened, and the sound of the fan spinning in the tower rang out softly.
I stopped what I was about to say and stared blankly at her.
'Is she trying to explain first?'
Seo-ah quickly operated the mouse and started opening a folder.
I couldn't see the monitor screen well from where I was sitting.
I could only see Seo-ah's hand movements and the faint light reflecting on the screen.
My chest tightened more and more.
The tension felt like it was strangling my throat.
I didn't even dare to look at what kind of expression Seo-ah had, so I just stared at the monitor screen as she seemed to browse through folders—
Seo-ah, who seemed to have finally found the folder she wanted, slowly reached out toward the monitor.
Slide—
The monitor turned so I could see it well from my side.
"...?"
There,
Click-clack-click-clack—
The video I saw earlier, of me sitting at the computer desk masturbating, was playing.
In the video, I was pulling down my pants and moving my hand quickly, stroking my dick.
The quality of the monitor showing the video was clearer than anything else,
And from the speakers on the corner of the desk, the sound of stroking my dick—
Splish♡ splish♡ splish♡—
—The sound of water splashing somewhere.
—Haa...♡
And, a faint, small moan was coming through.
At that completely unexpected scene, just as I was watching the monitor, forgetting even to breathe.
Suddenly, a voice came from right beside me.
"C-can you see it...?"
"...!!"
The owner of the voice was Seo-ah.
When I turned my head toward her, who had come right up beside me at some point—

I saw Seo-ah's face looking at me with an expression I had never seen before, her lips curled up in a strange way.
That expression seemed to be imbued with madness.
Although the signs of nervousness were clearly visible in her rough, irregular breathing and her shoulders that were stiff and trembling slightly—
"W-what?"
Nevertheless, I was also tense because of her suddenly changed atmosphere, and I replied like an idiot.
At that moment.
Seo-ah's eyes flashed for a moment, and her lips curled up even further.
...It felt like she had gained some kind of confidence from my reaction.
"F-from now on... Oppa, you have to listen to me."
But perhaps because her tension hadn't been resolved, the words followed in a still-trembling voice.
Because I was frozen, unable to speak due to the sudden turn of events,
Seo-ah heaved her chest as if taking another deep breath, then continued in a trembling voice.
"Otherwise... I'll send the video to the eonnis, along with what you did to Ji-eun eonni...!"
...Blackmail.
It seemed like she was stuttering too much for it to be a proper threat, though.
Since my brain was severely stalled at the moment, it sounded effective to me, so I stammered back without realizing it.
"W-what... do I have to do...?"
After finishing her threatening line, Seo-ah kept her mouth shut and stared at me for a long time with a nervous expression.
Her eyes wavered anxiously, but upon hearing my question, her lips slowly curled up again.
Grin—
Cheeks full of a blush, glistening eyes, and white teeth revealed between slightly parted lips.
Along with that smile, which felt somewhat gloomy, revealed once again.
Seo-ah let out a trembling breath and commanded in a low, cracked voice.
"...Take off your pants, right now."
I hesitated for a moment at the absurd demand.
But immediately after, my masturbation video, still paused on the monitor, caught my eye.
The thought of this video going to Ji-eun and Yu-na sent a chill down my spine.
'...I'd rather... just to Seo-ah...'
Still, it would be better to fulfill one person's request than two.
Based on the conclusion reached by my half-broken brain,
I slowly stood up from my seat.
At the same time, Seo-ah's gaze followed, fixed on the bulge in my pants that still hadn't subsided.
Her eyes were wavering.
Doubting if this was really reality, I brought my trembling hand to my waistband.
The video must have stopped at some point, as no sound was coming from the speakers.
Slide—
"...Gulp."
Only the sound of fabric brushing and someone swallowing spit filled the room.
As I slowly lowered the hand holding my waistband—
The shape of my bulging dick was clearly revealed, as if it were about to burst through my underwear.
The fabric of my underwear was pulled taut, and the tip was wet and glistening with transparency.

Seo-ah was staring intently at it.
Her lips parted slightly, and her breathing became increasingly rough.
"...Take off your underwear, too."
She commanded once again.
I agonized one last time—
Slide—
As I pulled down my underwear, my dick, hard and erect as if it were furious, popped out.
The red glans, already glistening with pre-cum, was exposed to the air.
The shaft, with its bulging veins, was thrusting vigorously upward, and a drop of transparent liquid was trembling at the tip, about to fall.
"...Haa...♡"
Seo-ah's breathing became even rougher.
She was staring intently at my dick without even blinking.
Her cheeks were already red enough to burst, and her eyes were completely unfocused.
And at that moment.
My dick gave a big throb.
The situation itself—exposing my dick completely in front of my younger sister, and because of blackmail at that—aroused me in a way that couldn't be explained in words.
I felt my dick twitch and become even harder.
Perhaps she hadn't missed that movement, as Seo-ah opened her eyes even wider.
She leaned her body, which had been sitting on the bed right in front of me, slightly forward.
The distance between my dick and Seo-ah's face became even closer.
"...Snnniff...♡ Hooo..."
...It might have been my imagination, but Seo-ah, who was breathing so roughly it looked like she was smelling it, took out her phone with trembling hands.
"From now on too... you have to listen to me...♡?"
She turned on the camera while still staring intently at my dick.
"W-wait a second...?!"
Click— click—
But before I could even stop her, Seo-ah took the picture.