The Sister Caught in the Act
“What, what is it! I told you not to come back!” The ‘younger sister’ jumped up and started throwing a tantrum. …What had she been doing?
Although it was daytime, the surrounding buildings blocked the sunlight, leaving the entire house shrouded in a dim, dusky gloom.
‘It’s pretty dark, probably because the lights are off.’
For someone like ‘Yang Dajun,’ who is often left alone, it was a familiar sight. More importantly, what I needed to take care of was my sister’s USB. After confirming it was on the desk, I intended to head to my room.
I walked toward my room, relying on the faint light. But then, I heard a flushed, breathless sound from somewhere.
“Haa….”
The sound was coming from the direction of my room. Thinking I might have misheard, I continued forward, but the sound became clearer the closer I got.
“Haa-aa….”
What was leaking from the room was the sound of moaning.
‘No way.’
The faces of the women in my house flashed through my mind. The older sister who sees her younger brother as a man, and the younger sister who seems to harbor feelings for her brother.
‘Ha… is it even okay to go in now?’
Once I was already inside the house, I figured hesitating wouldn’t change anything. I forced my feet to move and entered my room.
A sweltering heat greeted me.
“Whoa.”
I took a deep breath and turned my head toward the source of the noise. The bed, which I was sure I had tidied up before leaving, was a mess, and the sound of the duvet rustling was incessant. And there, a girl startled inside the blanket….
“W-what….”
“Dami?”
It was my younger sister, Yang Dami. I had hoped it wasn’t her, but I had witnessed my younger sister occupying her brother’s bed. I locked eyes with my ‘younger sister.’
“T-this is….”
Yang Dami stood frozen in place, her hair standing on end like a startled cat.
“Ugh….”
After moving her lips for a long time, she looked at me and spoke in a voice that was uncharacteristically small.
“I told you not to come back….”
She was hiding inside the blanket, with only her face peeking out. Watching Yang Dami, whose cheeks were flushed red, I thought about why my ‘younger sister’ would be in my room.
‘No need to even think about it. Obviously, it’s that.’
It was obvious what she had been doing under the covers. She was fidgeting so much that the blanket was still rustling non-stop.
“Ugh… I told you not to come back….”
I could tell just by looking that she was incredibly flustered. I decided to stall for time for my babbling sister. I lifted the corners of my mouth in a goofy grin, true to ‘Yang Dajun’ style.
“Heh, sorry. My sister said she left something behind, so I came to find it.”
“Who asked you? If you f-found it, get out!”
“Hmm… this is my room, though.”
As I lazily scratched my head, Yang Dami jumped up and shouted in a shrill voice.
“I-I know that!?”
At the same time, the blanket fell to the floor with a soft sound. Yang Dami glared down at me, huffing.
‘I should give her an excuse to get out of this now.’
Looking at Yang Dami, whose face was beet red, I said,
“If you want to sleep in my room, just keep sleeping.”
“Ugh….”
Yang Dami flinched for a moment, then glared at me.
“Shut up…!”
With that, she shoved my shoulder and ran out. She was the one who came to my room, yet she ran away because she couldn’t handle the embarrassment.
The door slammed shut with a bang, and the sound of her scurrying down the stairs echoed through the house.
*
“Damn it…!”
Yang Dami ran out with her head hung low. ‘Why did he come back so soon!?’ She was sure he said he was going to Yurim’s place. He was supposed to stay gone until she was tired of waiting, just like last time…!
Yang Dami huffed, thinking back to the morning. After getting a massage from Yang Dajun, she had been clutching her pounding heart while hugging his clothes. But then, Yang Dajun, who had gone into his room, suddenly came out dressed to go out.
“…Where are you going?”
“To Yurim’s.”
“Damn it… go and don’t come back.”
She had said it bluntly, ruffling her hair. Yang Dajun just looked around blankly, as if he hadn’t even heard her. ‘What is this?’ Following his gaze, she saw a USB at the end of it. Why was he so interested in such a useless thing? He really was an idiot.
Yang Dajun tilted his head for a moment and then headed straight for the front door. “Idiot….” Yang Dami muttered to herself, watching his back. “You said you wouldn’t disappear from my side…. How long has it been since you said that….”
She hugged the clothes in her arms and squeezed her thighs together. As she hung her head, feeling a ticklish sensation at her nipples, Yang Dajun spoke, seemingly ready to leave.
“I’ll be back soon.”
When she turned her head, he was looking at her with a smile, as if he were happy about something. Yang Dami’s eyes twitched as she snapped at him.
“I said don’t come back!”
“Huh?”
“I told you not to come back! Just try coming back early!”
She was deliberately shouting at the top of her lungs. Since she had threatened him, she thought Yang Dajun would be scared and come back really late. ‘Anyway, Yang Dajun… he’ll probably come back late without even knowing I’m waiting for him.’ Yang Dami snorted and didn’t even make eye contact until Yang Dajun left.
“Hmph.”
“Ugh.”
Yang Dajun scurried out as if he were running away. Just like a man, so timid. As the door closed, the outside air rushed in.
Yang Dami slowly turned her head. “Hmph.” She waited a little longer, just in case. “…Hmph.” He’s really gone, right…?
Yang Dami slowly stood up. She stared intently at the front door, pouting her lips. “Just try coming back early….” She muttered as she moved her feet. It was toward her ‘biological brother’s’ room. Every time her heels touched the ground, her heart pounded.
“Haa….”
She clutched her trembling chest and stared at Yang Dajun’s room. And then.
Creak—.
A moment later, the mattress sagged, and the old bed let out a noise.
*
“Haa….”
Yang Dami hugged the pillow. She held what her biological brother slept on against her own body, wriggling as if she didn’t know what to do. On the creaking mattress, the round, swollen duvet heaved.
“Haa-aa…!”
A hot sensation rose between her fidgeting legs. “Agh….” Her teeth, which she had been biting down on, bit into something. “Yang Dajun….” She called her brother’s name and squeezed her legs together tightly.
“Don’t….”
Mumbling in her mouth, she soaked ‘that thing’ with the girl’s saliva. “Leave me….” A drop of bubbly saliva flowed down from her slender chin. What Yang Dami was biting was her brother’s underwear.
“Haa… Yang Dajuuun….”
Biting into something that looked like he had just taken it off, calling out the name of her truly idiotic brother. Every time she squeezed the pillow she was hugging with all her might, it felt as if her brother’s scent, which had permeated the fabric, was flowing out.
“Haa…!”
As she rubbed her body against the pillow, her nipples, which had been sunken in, felt itchy. Every time her heart pounded, a ticklish sensation rose up, and she couldn’t keep her body still.
“Stay by my side….”
She thought of his face, smiling blankly whenever he said, “Heh, sorry.” Yang Dami, picturing her brother in her mind, wet her still-virgin hole with her saliva.
“Haa….”
The more she thought, the more the words she had kept in her heart threatened to spill out. “Op….” Unable to stay still, unable to hold it in any longer, Yang Dami slowly opened her mouth.
“Oppa.”
The word she uttered, her lips trembling, was ‘Oppa.’ She rubbed her cheek against the pillow, thinking of her own flesh and blood. “Oppaaa….” She closed her eyes and curled up like a newborn kitten. She kept babbling in a flushed voice, rubbing her face here and there.
“Haa, haa-aa….”
That was when it happened.
Thump, thump.
‘Ugh…?’
She opened her eyes, feeling the hair on her body stand on end. She didn’t know when he had started walking, but by the time Yang Dami came to her senses, the footsteps had already stopped. The younger sister lying in bed wrapped in a blanket, and the boy who had suddenly appeared. Standing before her was her own biological brother.
‘…!’
Yang Dami flinched and sat up halfway. Startled once more by the rustling of the blanket, she wrapped herself up tightly.
“W-what.”
“Yang Dami?”
Yang Dami sat frozen in place, only moving her lips. He was supposed to have gone to Yurim’s place. Usually, no matter how long she waited, he wouldn’t have appeared until sunset. ‘Why did you come back so soon…?’ For some reason, along with a feeling of joy, her heart felt overwhelmed.
“Ugh….”
She had realized what kind of state she was in. A younger sister hugging a pillow while biting her brother’s underwear. Yang Dami fidgeted busily inside the blanket and carefully opened her mouth.
“I told you not to come back….”
Her eyelids trembled. She felt so hot that she thought her face might explode at any moment. Trembling all over, Yang Dami adjusted her clothes inside the blanket. Yang Dajun was just tilting his head as usual.
‘Idiot…!’
It would be nice if he said something. Why she was in his room, what she was doing in bed. Whether she was out of breath because something had happened. ‘Idiot, he’s so oblivious.’ Yang Dami hid her brother’s underwear in her pocket and carefully looked up. But she couldn’t look him straight in the eye. Her vision was blurry, and she felt like something moist was about to flow down at any moment.
“Oh, sorry….”
At that sight, Yang Dajun opened his eyes wide and said belatedly. He blinked for a while, and the only thing he could come up with was something trivial. “My sister said she left something behind, so I came to find it.”
“Ugh….”
It’s just like that, isn’t it? Again, someone else, not me…!
Yang Dami flared up. “F-found it, get out!” She screamed at the brother she had waited so long for, trying to shake off the ticklish feeling that had filled her heart all at once.
Yang Dajun scratched his head and said, “This is my room, though.”
“I-I know that!”
You real idiot, is that all you can say!? Yang Dami jumped up from her seat. The blanket she had been wrapped in flowed down to the floor. Throwing away the pillow she had been hugging as if it were her real brother, she stood right in front of Yang Dajun.
‘Looking like a real idiot…!’
It definitely wasn’t because her heart pounded just by making eye contact. Being his sister, she just blushed while looking at a boy smaller than herself. Yang Dajun, oblivious to her feelings, kept saying weird things.
“If you want to sleep in my room, just keep sleeping.”
“Ugh….”
That idiot, he doesn’t even have a clue what I was doing just now. Yang Dami, feeling overwhelmed, bared her teeth and said,
“S-shut up!”
She shoved the shoulder of her brother, who was standing still, and escaped the room as if running away.
“Damn it…!”
She huffed and kicked the front door open as she ran out. As she went down the stairs, her neatly trimmed bob hair became disheveled with the sound of her footsteps. ‘What is this! Why did you come back so soon…!’ He came to get his sister’s things—the words she didn’t understand swirled in her head. She thought he would come back late. She thought she would be fine for a while. She bit her lip, blaming herself for what had already happened.
Yang Dami, who had come outside, had to open her eyes wide once again.
“Oh.”
Someone was leaning against a utility pole, waving their hand. “Dami.”
“…Unnie?”
For some reason, the person waiting in front of the house was Lee Yurim. Her brother’s childhood friend, who always greeted her with a smile. But Yang Dami couldn’t brighten her face.
“Dami, what’s wrong?”
“Ugh….”
Instead, she bit her lip and passed Lee Yurim. She ran away, leaving the bewildered Lee Yurim behind. “Yang Dami? What’s wrong, Dami!” She heard a voice calling her from behind, but Yang Dami ran blindly without looking back, as if she had plugged her ears.
How far had she run? Yang Dami stopped walking when her phone rang. Along with the buzzing vibration, she checked the text.
It was Yang Dajun. She grumbled and tried to turn off the screen, but more texts arrived in succession.
“Ha….”
It wasn’t just a simple question; it had two question marks and an emoji. A dry laugh threatened to escape at the clumsy text sent by someone who didn’t know how she felt. ‘This idiot, does he know and is he doing this? Is he doing this on purpose?’ Yang Dami ruffled her hair. “Damn it.” Still, she replied.
It was a short sentence, but that was enough. Since she often stayed out, he wouldn’t think it was strange. In her current state of mind, she felt like her face would explode if she saw Yang Dajun again. “Idiot, seriously….” Yang Dami thought, hanging her head low. Standing crookedly, her hand was in one of her pockets. Inside, her brother’s underwear was balled up. Yang Dami’s body trembled. “…What should I do.”
*
‘Dami won’t have any bad thoughts.’ I felt relieved by her reply, which was like any other day. At the same time, I sent a text to another girl. A profile picture was displayed in the corner of the screen. I stared at it blankly and headed out of the house.