The Sister Who Wants to Submit to Her Little Brother (5)

After dinner, Seo-yoon and I headed side by side to her room. A smile crept across her lips as she walked to the computer desk with her back to me. Trying not to let her leaking giggles give her away, she bit her lip hard and stiffened her expression.

Perfect. With this bug excuse, she could keep me trapped in the same space for hours. Seo-yoon sat down and turned on the monitor. The tedious work began again. A job that didn't suit her aptitude or major. Ever since moving to this countryside, sitting at this desk every day had been the most suffocating, dreadful time. But today, she wasn't scared at all. With a light heart, she logged into the video conference and started organizing her documents.

Behind her back, I leaned against the bed, fiddling with my phone. As expected, no bugs appeared until her work was done. The bug was just a pretext she'd made up to drag me into her room in the first place. In the end, I killed a few hours bored out of my mind, just swiping through screens. Before I knew it, the sun was setting outside the window.

Seo-yoon subtly angled the small hand mirror on her desk. The image of me yawning on the bed was perfectly captured in it. She flashed a satisfied smile.

Sure enough. Not just one day, but two in a row like this—it wasn't mere coincidence. Her little brother. Just having Siwoo nearby made all her worries and anxieties evaporate like smoke. The closer Siwoo got, the more at ease her mind became. Right now, the only savior who could hold onto her reason teetering on the edge was Siwoo. Seo-yoon drank in the sight of her brother's face in the mirror for a long time.

How much longer did she focus on work like that? She stretched her arms out wide with a yawn.

"Urgh—."

Just like always, she'd perfectly finished her quota within the set time. I looked up from rolling around on the bed.

"Done with work?"

Seo-yoon opened her mouth. "Yeah, all do—"

She froze mid-stretch. A single thought flashed through her mind. If she said she was done, I'd go eat dinner and head back to my room like yesterday, right? She'd told me to stand by in case a bug came out while she worked. Once the work was over, there'd be no reason for me to stay in her room.

Seo-yoon slowly lowered her raised arms. Then, turning around with a shameless expression, she snapped at me.

"Not even close."

"Looked like you just finished."

"Stretching doesn't mean shit. I've got a mountain of data to compile left. Go eat and come right back."

I clicked my tongue in disbelief. "Didn't I already earn my keep for today?"

Precisely, the sausage price.

"What are you talking about? I didn't even get to see a bug today. Anyway, eat dinner and come straight back on standby. Got it?"

I nodded vaguely. After dinner, Seo-yoon slipped back into her room. I headed to the bathroom. She watched me go with a hint of dissatisfaction, but there wasn't enough pretext to control me even in the toilet.

The moment I entered the bathroom and reached for my zipper, the firmly closed door slid open silently. Chae-eun hugged me from behind just like that. She rubbed her breasts blatantly against my back, letting out heated breaths.

"Son... Mom can't hold back anymore...."

Chae-eun's voice was hoarse, her trembling breath tickling my ear. She let out a needy moan and lightly nibbled my earlobe. Because I'd spent the whole day in my big sister Seo-yoon's room without coming out, the secret daytime fucks we'd been having were cut off, and after just one day, she was in heat at her limit.

I could feel Chae-eun's hot body temperature pressing against my back, the sensation of her swollen, taut breasts transmitting perfectly. I smirked and turned my head to look at her.

Naked with just an ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠apron. Just a week ago, she'd been a virgin, yet she knew exactly how to seduce a man.

"Got it. But right now's a bad time. My sister's throwing a fit for me to come back quick. If we fool around like usual, she'll probably barge right in to check."

"Then... then at least let me suck it. Please? Come on... I haven't even gotten to see my son's cock all day...."

Chae-eun's eyes welled with tears as she desperately groped between my legs. Her blatant touch was more beast than mother. I looked down at her pitiful face and gave a short reply.

"Fine. Do what you want."

"Y-yeah♥"

The moment permission dropped, Chae-eun yanked my pants and underwear down to my ankles in one go, as if she'd ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠been waiting. She knelt on the bathroom tile floor and carefully wrapped both hands around my stiffly upright cock.

"Ah... son's cock... I missed it so much....♥"

Chae-eun buried her nose from the glans tip to the root, inhaling deeply with a dazed expression. The fishy, intense masculine scent paralyzed her brain once more. She parted her lips and took the glans into her mouth, licking it devotedly.

"Hauum—♥ Chuurp— chuuuurup... tsk, tsuup♥"

Vulgar slurping sounds echoed in the narrow bathroom. Chae-eun shoved the cock deep into her throat, squeezing her cheeks and neck to press against the entire shaft. ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠Gagging should've come from it hitting her uvula, but she shook her head back and forth even deeper, more fiercely, as if she loved it. Her tongue relentlessly teased around the ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠urethra, both hands stroking the insides of my thighs in desperate service.

I gripped the back of Chae-eun's head and roughly thrust my cock into her mouth.

"Jjeok jjeok! Kkheuk♥"

Her cheeks hollowed and swelled repeatedly to match the girth of my cock. Her nostrils flared nonstop, tears of pleasure pooling in her eyes. As the urge to cum built, my hips began to tremble faintly.

"Haa... Mom. Gonna cum soon?"

"Eup♥ Huueueup—♥"

I yanked Chae-eun's hair, slamming my cock deep into her throat and unloading.

Thick spurts erupted, relentlessly flooding down her esophagus. Chae-eun's eyes bulged wide, her body shuddering violently, but she desperately swallowed every drop without spilling a single one. Gulp— gulp— gulp— Her throat bobbed repeatedly.

When I pulled out after finishing, tzurut— tsuts— Chae-eun gasped for breath, staring blankly at the ceiling for a moment. Then, coming to her senses, she grinned and hooked her index fingers at the corners of her mouth, stretching them wide sideways.

"Bwehee—♥"

She stuck out her pink tongue long. White teeth, pink tongue, even the lewdly wriggling throat. She proudly showed that not a drop of cum remained.

Chae-eun looked up at me with moist eyes, wiping the saliva from her chin with the back of her hand.

"Ate well, son...♥"

I stroked her head in satisfaction, patted it lightly, and pulled my clothes back on. Still kneeling on the floor, Chae-eun savored the lingering fishy aftertaste with a dazed smile.

The moment I returned to Seo-yoon's room, her grumpy voice hit me.

"You shitty shitter. Shitting all damn day."

"Means I'm healthy. Wanna see the turd?"

"You're insane."

Tsking her tongue, Seo-yoon glared at the monitor. Truth was, today's work was done ages ago. But to keep me in the room longer, she had to pretend to work. She unnecessarily opened an already finished report window and tapped the keyboard. Tap, tap tap. Pretending to work, typing whatever came to mind. The blank screen filled rapidly with text.

The screen brimmed with blind, obsessive sentences directed at Siwoo. Even as she typed them herself, it felt insane, but she couldn't stop. A few more hours passed like that. It was getting hard to make excuses to drag it out any longer. Seo-yoon hurriedly closed the notepad window and stood up.

"Done."

"Finally?"

I rolled my stiff neck and got off the bed.

"Yeah. No sign of it today. Lucky. You go sleep too."

"Jeez. Holding a guy all day. I'm out."

I left the room. Watching the door close, Seo-yoon bit her lip in regret. And a few hours later. Past midnight. Creak— My door opened. I turned my head from where I lay in bed. Through the open gap slipped Seo-yoon, clutching a thick blanket as big as herself.

"Sis? Not sleeping?"

Before I could even ask, Seo-yoon dropped the hugged blanket onto the floor with a thud. Grumbling like always, she strode boldly into someone else's room.

"Ah, fuck."

A curse right off the bat.

"What now."

"That bug came out in my room again."

"What? There was nothing earlier."

"I was sleeping without the blanket 'cause it was hot, right? Then suddenly something crawls ssshh over my toes! Turned on the light, and there it was. Freaked me the hell out."

Seo-yoon shamelessly furrowed her brows and rubbed her arms. A gesture of goosebumps.

"So you didn't catch it and just came?"

"Who has the mind for that! It was so gross, I bolted right out."

Seo-yoon pointed her chin at my bed.

"I'm sleeping here tonight."

"In my room? Sleep in your room. I'll go catch it."

"No way! It's probably crawled all over my bed by now. How am I supposed to sleep there? Gross. I'm sleeping here, so you figure it out."

Seo-yoon blatantly gave me a look.

"Tch. Fine. Well, the living room's kinda noisy from the fridge anyway."

Even after I permitted it, Seo-yoon looked sullen.

"Hey."

"What."

"The sister who brings in the money has to sleep on this hard floor? No VIP treatment?"

An endlessly shameless, brazen demand. I smirked in disbelief. Without a word, I threw off my blanket and sluggishly got up.

"Got it. You take the bed. I'll sleep on the floor."

I started toward the blanket Seo-yoon had laid on the floor. At that moment, she grabbed my arm tight.

"No need."

I turned back.

"Doesn't mean I'm bitch enough to shove the room owner on the floor. You'll just snitch to Mom later that your sister made you sleep on the floor."

"I won't. Just sleep."

"No. Don't sleep on the floor."

Seo-yoon subtly lowered her head. She perched on the edge of my bed, hands clasped on her knees, voice dropping low. She flicked her gaze to meet mine. Her face flushed faintly.

"It's a bit narrow, but not impossible. Just sleep together."

At the same time, a new alarm rang from the terminal in my hand.