Sorry for being a perverted sister
Sorry for being a perverted sister
My head felt hazy.
I'd only had two or three cans of beer, but since I wasn't much of a drinker, I was a bit tipsy.
What am I doing right now, you ask?
"Ughhh..."
It was something I did, but... the sensation of Kang Yu-na's butt indirectly brushing against my crotch.
That soft, warm skin, the pressure transmitted through the thin fabric.
All of this wouldn't leave my head, and my erection wouldn't subside.
There was one easy way to solve it, but—
'If I touch myself like this, I'll end up doing it while thinking about Kang Yu-na.'
Because of that thought, I had no choice but to hold it in.
I thought maybe focusing on something else would help, so I turned on YouTube Shorts, but instead of focusing, the earlier incident just kept playing on a loop.
So, in the end, I lay in bed, hoping to rely on the drunkenness to fall asleep.
But it felt like dozens of minutes had already passed since I started tossing and turning in bed.
7:30 PM.
Maybe it was too early to go to sleep.
...
How much time had passed?
In a state where I didn't even know I had fallen into a shallow sleep with a troubled mind, I was woken up by the sound of the door lock.
Click—!
Immediately after, the sound of the front door opening followed.
'...It must be Noona.'
I opened my eyes slightly and glanced at the clock; it was already 10 o'clock.
It seemed Kang Ji-eun had returned from working overtime.
I should get up to greet her, but if I got up now, I felt like my sleep would completely vanish.
'Sorry, Noona.'
I just lay there quietly with my eyes closed.
Footsteps passed through the hallway, brushed past my bedroom door, and faded away.
'Guess she left.'
The moment I felt relieved and tried to fall back asleep—
Suddenly, I felt my bladder swelling up.
Maybe it was the beer, or maybe it was because I slept shallowly while drunk, but I suddenly had to pee.
"Ah... damn it. Not now, when I'm trying to sleep."
I sighed and sat up.
I didn't know what kind of disaster would happen if I kept sleeping like this, so I had to go to the bathroom even if it meant waking up.
I got out of bed, walked like a zombie, opened the door, and came out into the hallway.
On my way to the bathroom, I heard signs of life from the living room.
I glanced over and saw Kang Ji-eun rummaging through the laundry basket.
Maybe someone had turned off the lights while I was sleeping, because in the dark living room, only the rustling sound and Kang Ji-eun's silhouette were visible.
'...What is it? Is she doing laundry at this hour? The dryer?'
I was curious if she was trying to run the dryer past 10 o'clock, but since I urgently needed the bathroom, I just planned to give a quick greeting and go in.
"Noona, you're home?"
"...Hic?!!"
I spoke to her lightly to greet her, and—
Kang Ji-eun turned around, startled.
'...Why is she so surprised?'
I was thinking maybe I should have made some noise to let her know I was coming, when Kang Ji-eun, seemingly having composed herself, spoke from the darkness.
"Oh, Si-woo...! Yeah, I came home late because of overtime. Sorry, did I wake you?"
She was stuttering, probably because she was very surprised.
"No, it's fine. I just need to use the bathroom..."
My bladder felt like it was going to burst, so I couldn't continue the conversation and went into the bathroom.
The moment I locked the door, it felt like I heard a small sigh of relief from somewhere.
'...That was close.'
Kang Ji-eun felt her heart racing and looked down at the hand she had hidden behind her back.
There was a pair of black underwear in it.
Kang Si-woo's underwear.
Although it was a bit disappointing because it was underwear that had already been washed, since she did laundry every morning, she compromised with herself to be satisfied with this for now, having just pulled it out of the laundry basket.
All the lights in the house were off, and she had been rummaging through the laundry basket defenselessly, assuming everyone had gone to sleep early.
She was really startled when Kang Si-woo's voice came from behind her.
But even while being that startled, she managed to hide Kang Si-woo's underwear behind her back with miraculous reaction speed.
'Almost got caught...'
She sighed softly and felt relieved.
After confirming that Kang Si-woo had closed the bathroom door, Kang Ji-eun quickly tidied up the basket and went into her room.
She locked the door and threw off all her clothes, including her white shirt, slacks, and underwear.
Now, all that remained was Kang Si-woo's underwear she had just brought.
She slowly brought it to her nose.
"Snnniff...!"
Naturally, there was almost no body odor left on the underwear after it had been washed.
But still, the very fact that it was 'something Kang Si-woo had worn' was exciting Kang Ji-eun.
And a moment ago, the sight of Kang Si-woo heading to the bathroom.
His hair, disheveled as if he had just woken up, and... the outline of the front of the shorts he was wearing as pajamas, slightly bulging.
Since her hands were behind her back to hide his underwear, and even the light from her phone was blocked, it was dark so she couldn't be certain.
'He must be... erect.'
Just that thought made her lower abdomen start to vibrate.
Kang Ji-eun, legs spread on the bed, lowered her other hand, the one not holding the underwear, and brought it to her vulva.
As she slightly spread her already soaked labia with her fingers, transparent love juice stretched out like a thread.
With Kang Si-woo's underwear buried deep against her nose, she began to slowly rub her clitoris with her other hand.
Squish...♡
"Huuu... Kang Si-woo...♡!"
As she gently rubbed her clitoris, which had already hardened and was showing off its presence, a pleasure like electricity spreading through her whole body rose up.
She closed her eyes and vividly recalled the image of Kang Si-woo she had seen in the hallway a moment ago.
Furthermore, she imagined what was inside those bulging pants.
"If Si-woo... became that hard because of me...♡"
It couldn't have been true, but she continued her delusion, assuming Kang Si-woo was aroused by her—
And began to move her fingers faster.
She rubbed her clitoris rapidly, and with the hand holding Kang Si-woo's underwear, she kneaded her own voluptuous breasts and pinched her nipples.
As she gripped her breasts harder and rubbed her clitoris like crazy, Kang Ji-eun's waist lifted on its own.
"Hng...♡ Ugh♡"
She began to slowly rub Kang Si-woo's underwear over her entire body.
Starting from her chest, she moved the hand holding the panties down.
It passed her stomach and reached the place where lewd love juice was spurting between her fingers.
"Ugh...♡ If Si-woo's panties... smell like me...♡"
In the end, Kang Ji-eun couldn't hold back and smeared her love juice all over Kang Si-woo's panties.
Because of the sense of immorality coming from doing something she shouldn't—smearing her secret love juice all over the place where Kang Si-woo's genitals would touch—the climax came quickly.
"Hyaaa...♡"
A cute moan that didn't seem to suit Kang Ji-eun burst from her lips.
At the same time, her body shuddered, and she reached her climax.
Love juice flowed out, soaking her hands, the panties, and even the sheets.
After catching her breath for a long while, Kang Ji-eun slowly opened her eyes.
Looking at Kang Si-woo's underwear, which had become damp as if it had just been washed again, she mocked herself inwardly.
'Si-woo must never know that his Noona is such a pervert...'
Even while denying herself like that inside, Kang Ji-eun was rubbing and spreading even the love juice on her fingers onto Kang Si-woo's underwear.
"So, sorry for being a perverted Noona...♡"
The next morning.
I opened my eyes with a throbbing headache.
Even though I had definitely slept for a long time, it didn't feel like I had slept at all.
I lifted my half-dead body and went out to the living room.
The living room was quiet.
It seemed like no one was there.
'Are they all still sleeping?'
As I slumped down onto the sofa, yesterday's events naturally came to mind.
"Ha... what do I do."
Just when I was thinking that Kang Yu-na had gone to the trouble of brushing it off as a joke, but I might have ruined it all by myself.
Bang!
Suddenly, there was the sound of a door opening.
I looked in the direction of the sound, and Kang Yu-na was walking towards me.
Then, she sat right next to me on the sofa and stared at me intensely.
For a moment, I was nervous.
I couldn't easily predict what kind of reaction would come, or what she would say.
I swallowed hard and glanced at her sideways.
The time that Kang Yu-na spent staring at me with a stern expression felt as long as an eternity.
While I was that nervous, the corners of Kang Yu-na's mouth went up slightly, and,
"Pfft...!"
"...?"
A sound I hadn't expected at all, like someone holding back laughter, leaked out.
Along with that sound—
"Kang Si-woo. Sex offender. A bastard who's horny for his Noona."
With a voice that couldn't hide the laughter, she suddenly started berating me.
In an instant, all the tension that had been in my body drained away.
My shoulders, which had been stiff with tension, relaxed, and a long breath escaped me.
'...Thank goodness.'
It was truly a relief.
The fact that Kang Yu-na wasn't angry, awkward, or avoiding me, but was trying to brush off even yesterday's incident as a joke like usual, was something I was really grateful for in this situation.
"Are you really horny? How could you look at your own sister and... think about getting it up?"
Seeing me look relieved, she giggled and berated me even more, but stuttered as if she was embarrassed to say it directly.
Just then.
I heard the sound of a door opening from the hallway.
Kang Yu-na and my bodies stiffened for a moment.
Kang Yu-na stopped what she was saying, cleared her throat, and adjusted her posture.
Soon after, Kang Ji-eun came out to the living room.
She looked at us with a face that still seemed half-asleep, then smiled softly.
"Oh, you're both up?"
It seemed she didn't have to go to work because it was Saturday.
Kang Ji-eun yawned lightly and headed to the kitchen.
I sighed in relief inwardly.
'If she had been a little later, I would have had to explain the sex offender nickname to the eldest Noona too.'
I thought once again how fortunate it was.
I was also grateful once again that Kang Yu-na stopped talking without bothering to tell Kang Ji-eun.
When I looked at Kang Yu-na with slightly moved eyes, she glanced at me and smiled slightly.
That smile was tinged with playfulness that seemed to say, 'Got lucky, huh?'