Chapter 122: Side Story - Younger Sister (5)
Chapter 122: Side Story - Younger Sister (5)
The daily routine of these siblings was quite textbook and typical.
However, the "textbook and typical" mentioned here differed greatly from that of ordinary siblings; rather, it was closer to the daily life of a pair of lovers.
It was a relationship that should never be shown to others. If they had to choose, it would be better to show it to a random crowd who didn't know they were siblings—though their resembling faces would inevitably cause someone to notice.
Even so, lately, Kang Yu-jin felt as though his younger sister was itching to be caught by others, acting as if they were nothing less than a couple.
But she likely didn't truly want to be caught. Kang Yu-jin figured this was simply Kang Yu-ri’s way of expressing her possessiveness.
‘It’s not bad, though.’
In fact, it was quite pleasant.
To Kang Yu-jin, who had been sleeping with and essentially dating his sister for years, her behavior felt incredibly lovely.
The way she tried to monopolize her brother, the way she craved his exclusive love.
It wasn't the infantile attitude she had shown when they were young. It felt as though all of that had been wrapped in a mature veneer, mixed with a uniquely adult desire.
It was the kind of attitude one should show to a lover, not a brother. Knowing this well, Kang Yu-jin indulged his sister’s whims.
"A movie?"
"Yeah, a movie."
In the bathroom filled with rising steam, the words his sister spoke were thick with that possessiveness. Since Kang Yu-dam had been over yesterday, Yu-ri seemed determined to leave a clear mark today that he belonged to her.
It wasn't just that; she was sulking because, despite having felt incredible herself from the thrill of it all, her brother had seemed to enjoy himself even more because of their older sister's presence.
So, her intention to make up for it with a date was vividly apparent.
If he asked, she would deny it, but Kang Yu-jin didn't feel the need to ask. It had been nearly ten years since he and Kang Yu-ri had entered this kind of relationship. Even for ordinary lovers, ten years is practically a common-law marriage where they know everything about each other.
When those people are also family, there’s no way there could be any secrets left.
For that reason, Kang Yu-jin wore a look of disbelief, and Kang Yu-ri pretended to be offended by his reaction.
"You don't want to? Am I the only one who wants to be alone with Oppa? Am I the only one who's serious? To Oppa, I'm just someone easy to use..."
"Alright, alright. I get it. Getting all worked up again..."
"Again? Is my heart a joke to you, Oppa? Ah, here I am again, not even knowing how you feel..."
"I said I get it. Calm down. I didn't say anything bad."
Kang Yu-ri, who had been pouting her lips as if sulking, finally let the corners of her mouth curl up in satisfaction once her brother started backing down.
"And who said I didn't want to? I like going on dates with you too, Yu-ri."
"Really?"
"Yeah, really."
"How much do you like it?"
Yu-ri approached him, the water splashing softly. The small bathtub was too cramped for two siblings to fit in together, but that was entirely a reflection of Yu-ri’s taste.
Because it was cramped, they had to embrace, overlap their bodies, and literally become one to fit—that was the kind of bathtub it was.
As if she had been waiting for this, the younger sister wrapped her arms around her brother and layered her body over his as he reclined.
In that moment, Kang Yu-jin felt a sensory overload as multiple sensations hit his nerves at once.
The softness of her breasts, the smooth skin beneath them.
The heat unique to his sister, and the elasticity that existed beneath her skin.
The softness of her thighs, and the single point where their intense body heat converged—the one part of Yu-ri’s body that Kang Yu-jin loved most of all.
Feeling the heat and the blood rushing, Kang Yu-jin answered.
"This much."
No, perhaps it wasn't an answer. It was a response, but at the physical change that served as his true answer, Yu-ri blinked and let out a giggling laugh.
The pleasant, refreshing sound of her laughter carried both a sense of genuine joy and a calculated intent to portray the "woman her brother liked."
But even that cunning side was part of Yu-ri’s charm. Kang Yu-jin didn't complain, and Yu-ri played coy even though she knew her brother had seen right through her.
"Mmm~? I don't know... Isn't this just you being in heat?"
Her hand moved. As her hand slid over his toned abdominals and brushed against his sensitive areas, Kang Yu-jin let out a heated breath.
"Touching your sister's butt, pressing against her breasts, and getting all worked up because her thighs are squeezing you... isn't that just being in heat? I don't think you're looking forward to a date at all; I think you're just thinking about rolling around in bed with your sister."
It wasn't exactly an insult, but it wasn't a compliment either. As Kang Yu-jin laughed quietly, Yu-ri wrapped one arm around his neck, pulling him close as she brought her lips to his.
Mwah. The meeting of their lips turned into the kind of kiss they had shared often since they were young because Yu-ri had begged for it.
It was a friendly kiss she frequently gave to most of the family, excluding Kang Yu-min and their father.
At the same time, it was an act that subtly revealed her sexual desire only to Kang Yu-jin. As they kissed, Kang Yu-jin gripped his sister’s buttocks. At the touch, which even displayed a sense of possessiveness, Yu-ri let out a small "Ah!"
"Oppa, you're a pervert."
"You're the one who made me like this."
"Mmm? What do you mean? Yu-ri doesn't understand."
"You've been constantly seducing me since we were kids, appealing to me with this butt of yours... you've completely ruined my tastes."
"Ruined?"
"I've become a man who can't get it up for anyone but his sister."
"Isn't it just that Oppa is a pervert?"
Yu-ri kissed him again with a soft chuckle. Her words were mocking, but as if afraid he might actually be hurt, her actions were the polar opposite of her speech—becoming softer and more explicit.
She narrowed and squeezed her thighs to stimulate him, and while leaving her backside in her brother's grip, she repeatedly pressed her lips against his in a deep kiss.
Naturally, the intensity of the kiss gradually escalated. With every wet sound of their lips meeting, the area of contact increased until their mouths parted, and she accepted his invading tongue with a delighted hum.
With their tongues stickily entwined and her body trembling behind closed eyes, she rubbed her body—filled with joy, lust, and love—against her brother.
As if her dream was to melt away and become one with him right then and there, Yu-ri swallowed her brother’s saliva and offered him her own.
They were engrossed in the kiss for a long time, only stopping when they both began to feel lightheaded.
The moment they pulled their lips and tongues apart, a long silver thread of saliva stretched between them, which they wiped away with their hands.
Kang Yu-jin and Kang Yu-ri locked eyes.
"What movie are we going to see?"
"Anything is fine. As long as I'm watching it with Oppa."
"...Is that so?"
It was the same for Kang Yu-jin.
What mattered to these siblings wasn't the content of the movie, but who they were with in that dark space.
The siblings suppressed their immediate urges, enduring for the sake of an even more pleasurable display of affection later.
It had been quite a long time since Kang Yu-jin and Kang Yu-ri had entered this kind of relationship.
The siblings had used each other's bodies as canvases to engrave their own tastes and discover each other's preferences.
In the process, they had discovered new facts they hadn't known before.
Where their weaknesses were, what they preferred.
In what situations they felt more fluttery, and what made them more aroused.
And as a result of their exploration, the siblings found they had more in common than they thought.
The movie theater was one of those commonalities.
Touching, teasing, and stimulating each other while watching something.
Stimulating each other in the dark while enjoying the thrill of potentially being caught.
The siblings tended to feel intense arousal from that act.
They knew it was a nuisance to others, but they couldn't help the fact that it made them more excited.
The fear of being caught, yet the vivid thrill that existed nonetheless.
Driven by the arousal that blossomed in that setting, the siblings did this often.
This time was no different.
They linked arms like any other couple, engaging in displays of affection while buying popcorn at the counter.
Using the curious glances directed at them as fuel, they moved into the theater to find seats that were secluded yet not entirely without the risk of being seen.
Up to that point, everything was very familiar, with nothing new.
All that remained was to stimulate each other while watching the movie, and once they were sufficiently aroused, to continue the act later at home—or in a place even riskier than that.
However, not every situation flows under complete control.
Right next to the seats they had picked out without much thought, Kang Yu-jin and Kang Yu-ri found a familiar face.
"Oh, Yu-ri?"
Her name was called precisely. Though flustered, Yu-ri managed to maintain a smiling face.
"Oh, Ye-ji! It's been a while!"
It was Ye-ji, Yu-ri’s classmate and friend. She was a friend of his sister whom Kang Yu-jin had met a few times—encounters that were unavoidable while maintaining their incestuous relationship.
Both Kang Yu-jin and Kang Yu-ri were flustered but tried their best to act natural.
"What brings you here?"
"What do you mean? I'm at the theater to see a movie. Oh, let me introduce you. This is my boyfriend."
"Hello."
"Ah, yes. Hello!"
"And this is my friend and her older brother. But wow, you still really love your brother, don't you? Coming to the movies alone with him... anyone would think you're a couple."
Yu-ri, who answered with a forced smile despite her obvious fluster, seemed secretly pleased by the comment that they looked like a couple.
"Is that so? They look so much alike that anyone can see they're siblings... You guys are really close."
"She's just like that. She's followed her brother around since she was little."
"Oh..."
She didn't even seem to mind the comment that they looked like siblings.
Even as they sat down and engaged in trivial small talk, Yu-ri didn't lose her nerve or hesitate.
Only Kang Yu-jin was somewhat flustered, but Yu-ri instead took this as an opportunity.
"So... ah, the movie's starting. Let's keep talking at a cafe later."
The friend cut the conversation short with a bright smile and settled into her seat, and Yu-ri nodded in agreement.
As the theater lights dimmed and darkness descended, Kang Yu-jin thought he should scrap their plans and just watch the movie quietly.
However, his sister, Kang Yu-ri, seemed to have a completely different plan.
In the shroud of darkness, Yu-ri’s hand moved. She took her brother’s hand, which was resting limply on the armrest, interlaced her fingers with his, and pulled.
Hidden beneath the coat draped over her lap, Yu-ri locked eyes with her startled brother and smiled, her eyes crinkling.
Before he knew it, Kang Yu-jin realized his hand had been guided between his sister’s damp thighs, into her most secret and sweet depths.
As he swallowed hard, Yu-ri placed her index finger over her lips, letting out a soft "shh" to tell him to be quiet.
Her intention was crystal clear.