Chapter 130: Side Story - Younger Sister (13)
Chapter 130: Side Story - Younger Sister (13)
It was quite a while later when Kang Yu-ri finally opened her eyes.
Even though she had lost consciousness in the evening, dawn was already approaching. Outside the window, the buildings were dark, save for the occasional car passing by.
Instead of the humid, stifling summer air, a cool breeze from the air conditioner drifted through the room.
“…Ugh.”
Even sitting up was a struggle. Despite knowing she was naked, the familiarity of being home allowed Yu-ri to rise without a hint of shame or hesitation.
The blanket covering her slid down, revealing her naked form under the dim lights.
For a long moment, Yu-ri sat there in a daze, trying to piece together her final memories.
Her last recollections were blurred, like a smudged painting, and many details were hazy at best.
Yet, she could still vividly recall that sharp sense of pleasure and the overwhelming joy of being loved.
And she knew exactly who the source of that joy was.
‘Ah, I must have passed out while we were…’
It wasn't exactly a rare occurrence. Back when she first started having sex with her brother, she had been the one in control, usually taking the lead. But as they both got older and gained more experience, the roles had frequently reversed.
Lately, whenever Oppa got fired up, he would practically pin her down and overwhelm her. It was rare for Yu-ri to remain fully conscious until the very end.
The only exceptions were recent instances, like when their older sister came home and they had to do it in secret, or when they snuck into the bathroom because they hadn't had enough. Usually, it ended with Yu-ri blacking out.
Not that she found this disappointing in the least.
‘Oppa really is at his sexiest when he acts like a beast.’
It was because Yu-ri deeply preferred that side of Kang Yu-jin.
Even now, retracing her faint memories confirmed it. She had a vivid image of him pinned over her like a hungry predator, breathing raggedly as he moved inside her.
And she remembered Ye-ji watching them…
‘…Ye-ji?’
Only then did she remember her best friend. Yu-ri flinched and looked around, spotting a small figure lying asleep right next to her.
‘…I guess the last bus already stopped running.’
Yu-ri felt a swirl of conflicting emotions.
There was guilt, excitement, and a sense of gratitude toward her friend for playing along as a sort of "side dish" to their pleasurable act.
And then, a faint trace of anxiety.
While she felt a blush of embarrassment at the fact that she had been sleeping naked next to her best friend, her head, now cooled from the heat of passion, began to turn.
‘Oppa didn't… cheat on me, did he?’
After Yu-ri had lost consciousness, only two people remained: her brother, who would have still been aroused, and Shin Ye-ji, who must have been incredibly turned out from watching incest right in front of her eyes.
When an aroused man and woman are left alone in a room—especially right after an act of intercourse—it was obvious what might happen.
Even though she trusted her brother, Yu-ri couldn't help the anxiety. It was something closer to an instinct.
The jealousy and insecurity she felt even toward her own family members couldn't possibly fail to trigger when it came to her best friend.
Yu-ri debated whether she should lift the covers and search for traces of an affair.
No, what if they hid it?
What if he used a condom?
Even so, wouldn't there be some fluids left?
But then again, she couldn't be sure. If they had committed the "perfect crime," they could have finished while she was out and then washed up together.
Unable to shake the anxiety, Yu-ri reached out toward Ye-ji.
How was she supposed to check? She didn't want to give her brother the impression that she was immature or overly jealous.
She didn't want him to feel like this twisted, wrong relationship could end at any moment. That was why she had to handle this perfectly.
She had to ensure this relationship lasted forever, so she could remain by his side as both his lover and his wife for the rest of her life.
She didn't care one bit that the law didn't allow it. She wanted this relationship.
Just as a living being needs nutrients and oxygen to survive.
For Kang Yu-ri to live, she needed Kang Yu-jin.
She wanted him to be there for every breath she took and every beat of her heart.
Someday—though Oppa didn't want it right now—she wanted to bear his children and build a family together.
But…
The problem was reality. It was hard enough to convince her brother that such a thing was possible, but if a romantic rival appeared…
‘…I’m confident in my looks.’
But looks weren't everything in a relationship.
The same went for romance and love. No matter how good someone looked, if their personality clashed or the circumstances weren't right, love wouldn't bloom.
That was why Yu-ri wasn't sure if bringing her best friend into this to keep her quiet had been the right move.
Had she actually made a huge mistake?
The part of her that wanted to monopolize her brother whispered to her, and she listened to those whispers.
What if this became the catalyst for him being taken away?
What if he had already been taken?
Worried, she scanned her surroundings.
Oppa was nowhere to be seen. Then, where? In her growing unease, Yu-ri looked down at Ye-ji.
Her face, faintly illuminated by the moonlight, looked peaceful—the same face she had seen for years.
There was no telling what lay beneath that expression. Yu-ri hesitated for a moment before reaching for the blanket.
Her heart wanted to strip the covers off entirely and conduct a thorough investigation, but she knew she shouldn't.
After a moment of deliberation, Yu-ri found a compromise. She leaned in and hugged Shin Ye-ji as if embracing her in her sleep.
Then, without shifting, she began to feel her small friend's body.
Her skin. It wasn't damp; it was dry.
Her hair. Whether it had been dried well or she hadn't washed at all, it was also dry.
Then.
Yu-ri’s hand slowly moved down, sliding under the skirt to touch her underwear.
Despite the intense excitement from earlier, Ye-ji hadn't changed or taken them off—perhaps she didn't find it uncomfortable.
They were still damp. She probably didn't have a change of clothes with her anyway.
But you never knew. What if she had anticipated this? What if she was trying to hide it?
Just as Yu-ri’s hand was about to slip inside the underwear—
“Oh.”
Yu-ri froze at the sudden voice.
Her eyes, which had been wide with focus, darted toward the sound. Kang Yu-jin was standing there.
Her mind whirled at being caught in such a bizarre situation by her brother.
However, she desperately pulled herself together.
“Morning, Oppa.”
“Oh, yeah… morning.”
Kang Yu-jin looked flustered as he stared at Yu-ri.
He had a towel over his head, and his body was still damp, smelling of body wash as if he had just finished showering.
He should dry himself better. As she swallowed that fleeting thought, something else caught her eye.
Even though he was looking at his sister’s naked body, a certain part of his anatomy—the part Yu-ri loved most—remained flaccid. It was frustrating, yet telling.
Did they really do it? Was he unable to get hard because he’d already been drained?
Yu-ri felt a pang of worry but maintained her composure.
“You didn't sleep?”
“I couldn't. Two people were hogging the bed. I tried sleeping on the floor, but I couldn't drift off.”
“So?”
“I took a half-body bath.”
Has it really been that long? As Yu-ri’s eyes darted around in thought, Kang Yu-jin seemed to pick up on her mood.
“I kept going for a bit after you passed out. You know, while you were sleeping…”
“No wonder I’m so sore.”
Yu-ri tried to answer nonchalantly, but she couldn't hide the hint of delight in her voice. Naturally, it was a sign her brother noticed, causing him to break into a grin.
The fact that he found her cute wasn't a bad thing. In fact, it was great.
Yu-ri knew her brother well, so she didn't hesitate to turn toward him.
“Come here.”
“No, Ye-ji is right there…”
It seemed he hadn't cheated. The way he hesitated because of Shin Ye-ji’s presence suggested as much.
But she couldn't be entirely sure. Yu-ri went through a dozen different things to say, trying to find a way to test him without being obvious, before simply opening her arms.
“Hold me.”
With a sigh that said he had no choice, her brother approached. Yu-ri loved hugging him while naked even when they weren't having sex, and as she fell into his embrace, she felt her heart melt.
The anxiety and the intrusive thoughts were quickly erased. Yu-ri wrapped her arms around him and leaned her cheek against his broad chest, letting out a relaxed breath.
Part of her wanted to fall back asleep just like this, but she still had work to do.
“Was it good?”
She asked the question vaguely on purpose. If he had just cheated with Ye-ji, it would show. Yu-ri’s eyes sharpened where he couldn't see them, but Kang Yu-jin answered casually, unaware of his sister’s inner turmoil.
“It’s always good.”
Did he really not cheat? Asking directly felt pathetic, so she held it in, though sometimes she just wanted to be blunt. Yu-ri forced herself to stay calm.
“Because Ye-ji was watching?”
“…I can't say that wasn't part of it. It felt fresh.”
Yu-ri’s eyes sharpened even further, but they softened at his next words.
“But more than that, it’s because it blocks any chance of problems arising. I don't care about myself, but I’d hate for your life to be ruined.”
“…Really?”
“Yeah, really.”
His hand reached up to cup her cheek. It was a warm, brotherly gesture, the same one he’d used since she was in kindergarten and elementary school.
Yu-ri felt the last of her suspicions dissolve. Her expression softened into a mushy smile under his touch. Seeing her face, Kang Yu-jin lowered his head and pressed his lips to hers.
Like lovers. As if he wouldn't let go of this greedy relationship where they were both siblings and partners.
Feeling his lips against hers, Yu-ri pulled him closer, their bare skin burning where they touched.
“…Let’s turn the AC up higher.”
“What about the electric bill?”
“I’m the one paying it.”
“Fair point.”
It was just as Kang Yu-jin reached for the remote to the air conditioner.
He froze. He stayed locked in an awkward posture, and despite his sister’s gaze, he began scanning the bed.
Yu-ri slowly turned her head and saw her friend staring at them with wide, shocked eyes—having just witnessed the siblings' intimate skinship.
Ye-ji looked like she had just woken up, her eyes still crusty with sleep, but her expression was one of pure shock.
Yet, as she seemed to recall what had happened before she fell asleep, her expression shifted from realization to confusion.
Yu-ri was internally surprised but maintained a facade of calm.
“Morning, Ye-ji.”
“…O-Oh, hey.”
“Did you sleep well?”
“I did, but…”
Shin Ye-ji’s eyes darted around frantically. She fidgeted with her hands, her face flushing bright red at the realization that the siblings were still naked.
Yu-ri easily read her friend’s mind.
She had things she wanted to say, things she wanted explained.
And she was clearly uncomfortable being faced with their nudity.
Though she wanted to tease her more, Yu-ri decided to respect her best friend. At the very least, since she had made her an accomplice, it was the right thing to do.
So, she stood up with a bright smile.
“Go wash up first. You must feel gross. We’ll talk after.”
Shin Ye-ji managed a small nod.