Chapter 156: Side Story - Bunker (14)
Chapter 156: Side Story - Bunker (14)
“…Mmm.”
As I stood blankly staring at the terminal, Kang Yu-min happened to wake up.
Rubbing her eyes sleepily, she let out a sigh and stretched.
As the blanket covering her slid down, her naked body was revealed in all its glory. I couldn't take my eyes off her for a moment.
Everything was confusing.
Especially the condoms. I mean, why condoms of all things?
I knew they could have other purposes. Back when Mom was building the bunker and I was learning the basics of survival...
I’d learned long ago that condoms could be excellent survival tools.
Using them as a makeshift water bottle was one example...
But I didn't get the feeling they were being given to us for that.
It felt more like they were intended for their standard use.
I watched Yu-min wake up and thought for a moment.
It seemed like she had already checked the terminal and moved them to storage.
But... really?
I looked at her, torn. Part of me wanted an explanation; the other part wanted to act like it was nothing.
In the midst of my internal conflict, the ball was in Yu-min's court.
She stretched, yawned, and looked at me.
I was standing in front of the terminal. Her eyes swept over me—specifically, my morning wood standing tall—and she smirked.
There was something seductive in her gaze. Even as my cock twitched, she spoke as if nothing were out of the ordinary.
“Want to eat?”
“…Sure.”
*
What the hell was that earlier? I could take a guess.
While I was asleep, we must have hit the seven-hour mark for sleeping together, and Yu-min probably saw the notification first.
I didn't know if there had been packaging, but even if there was, it was obvious she had unwrapped it and covered us with the blanket.
Before getting into bed together...
She must have checked the terminal to confirm the completed directive and seen the new one.
Hug for 1 hour.
100-pack of ultra-thin premium condoms.
And for some reason, she chose to store them.
Yu-min had done all that, and even knowing I’d seen it, she was acting perfectly nonchalant.
It was baffling. Why?
Helping each other masturbate and actually having sex are two different things, aren't they?
Or is this another case of "if you care, you lose"?
I struggled between wanting to ask and wanting to stay quiet until we reached the dining area.
“You’re eating too, right?”
“Uh, yeah. I should.”
“Good. I’ll heat up two, then.”
Yu-min pulled out two pouches of nutritional porridge and added water.
It was similar to heating up MREs. You added water, and a chemical reaction heated it up without the need for fire or machinery.
Food I’d been eating for a year and a half. I took the familiar pouch from her, tore it open, and pressed my lips to the nozzle.
“Ugh, tastes terrible.”
That’s just how nutritional porridge was. A gel-like substance you sucked out. Nutritionally perfect, but completely flavorless.
Thinking it was at least easy to consume, we ate our meal in the nude.
I felt like something inevitable was approaching.
Just that premonition alone made my cock throb.
I tried to ignore it and keep eating, but then Yu-min spoke.
“Phew, all done.”
“Already? That was fast.”
“Now for dessert.”
Just as I expected, she said that and walked over to me.
“Hey…”
“Stay still. I practiced while you were sleeping.”
My body stiffened, but I stayed put. Yu-min went under the table and positioned herself between my legs.
“It’s standing nice and tall. Is it for Noona to eat?”
“When did I ever…”
“Thanks for the meal.”
“Hey, wait—!”
The words died in my throat. I arched my back at the sudden surge of pleasure, then slowly looked down to see what she was doing.
A steady wave of pleasure washed over me. The feeling of her mouth around the head and her tongue tracing the shaft. Her firm grip provided just the right amount of stimulation; it felt better than I expected.
Her tongue rested gently on the glans, and the heat from her mouth—warmed by the porridge—turned even that into pure bliss.
It was better than I thought. I tried to finish my porridge while my sister sucked my cock.
“…Ngh.”
But every time I sucked on the porridge, Yu-min would suck on my tip like it was porridge too. The strange sensation made it hard to keep eating.
Still, I forced myself to continue, breathing heavily, while she continued to suck, making wet, slurping sounds with her saliva.
Just from the sound of it, I could guess what had happened during the night.
No wonder my body felt a bit sluggish; she must have drained me a few times while I was out.
My balls felt a bit tight, and the tip of my cock was slightly sensitive.
I let out a ragged breath, my toes curling and uncurling.
When Yu-min firmly pressed down on my trembling thighs, I looked under the table and saw my own sister, eyes closed, focused entirely on sucking me off.
How did it come to this?
Until yesterday, I was the one in control.
I was the one who was supposed to lead.
So why?
Thinking about it didn't provide any answers. I held my breath as the urge to ejaculate began to build.
“I’m… about to…”
At my words, Yu-min opened her eyes and met mine. With a slight smirk, she gave the head a long, deep pull.
“Ugh…!”
That was all it took. The semen that had been simmering in my urethra spilled out.
The weak, spurting mess was proof of how much she had exploited me during the night. The way she caught the discharge in her mouth proved she actually enjoyed the taste.
My hips gave a final shudder as I finished inside her mouth.
“…Haa, phew…”
She milked the last few drops before letting go.
My cock, limp and drenched in saliva, was covered in faint lip marks from base to tip.
I never thought I’d live to see the day my own sister milked me while I was eating breakfast.
As I sat there dazed, Yu-min crawled out from under the table.
“Delicious.”
“…What does it even taste like?”
I was curious. Seeing her eat it with such gusto, was it actually good?
The thought of eating my own cum was gross, but I figured it was better to just ask.
Yu-min nudged my legs aside and climbed onto my lap, hugging me.
Her full breasts pressed against my chest. She wrapped her arms around my neck, her face inches from mine.
Is she...? As if to confirm my thoughts, she whispered with a smile.
“It’s sweet, bitter, a little salty, and yeah, it’s a bit fishy… but there’s a sweetness to it, like well-cooked rice.”
“Really? That’s unexpected…”
I thought it would just be fishy and bitter. Maybe her sense of taste had become hypersensitive from only eating nutritional porridge. As I pondered this, Yu-min patted my back while staying pressed against me.
“What is it?”
“What’s what?”
“I mean… why are you suddenly acting like this?”
“Oh, please. You don’t know?”
“I don’t.”
“If you decide not to give me your semen, I can’t have any. So I have to treat you well.”
…That was the reason? I let out an incredulous laugh, and she giggled, staying glued to me.
Her body was hot, and I felt something damp and sticky.
Specifically, between her legs. Her pussy was soaking wet, dripping juices onto my thigh.
“And you said you wanted a ‘return’ on your investment.”
“Oh…”
I suddenly remembered yesterday. Even though I was the one who said it, it took me a moment to recall.
“Is this the return?”
“No.”
“Then what is it?”
“Before that, let me ask you two things.”
“Two things?”
“Are you a virgin?”
I felt a surge of annoyance, but a sense of foreboding kept me from answering immediately.
“Okay, looks like you are. Second.”
“…What?”
“What do you think about us helping each other masturbate?”
“…Aren't we already doing that?”
“Right? Then... it's okay if we do it a bit more efficiently, right?”
“…What do you mean by that?”
“You know exactly what I mean. You saw the terminal earlier.”
I swallowed hard. Yu-min was still holding me.
Her voice wavered slightly, and her hands were trembling, showing that she was hesitant too.
But I didn't understand why she was going this far.
I mean, we're siblings.
They say it's a game of chicken where the first one to care loses, but this?
While I hesitated, Yu-min spoke.
“It says we get condoms if we hug for an hour.”
“…Yeah, I saw.”
“How do you think we should use them?”
A certain rumor flashed through my mind.
The rumor that people who exercise a lot have high sex drives.
And Yu-min really loved to exercise.
I tried not to give the obvious answer.
“Water bottles…?”
“Well, we could use them for that... but I've been thinking.”
Yu-min pulled back slightly to look me in the eye. Her eyes... looked a little crazed.
Only then did the obvious fact that women have sexual desires too cross my mind.
But there was no turning back now.
“Wouldn't it be okay if we just acted as each other's masturbation tools?”
I swallowed hard. Yu-min looked at me and gave a small, mocking smirk, as if I were cute.
It was the kind of smile that poked at my pride.
“Well, let me know if you're interested.”
She wrapped her arms around my neck again and hugged me.
Leaving the choice entirely up to me.