Five Grains Reboot

Chapter 2

—–CROW—– 

My hand trembled as I helped Ji-min up, catching sight of her breasts swaying enticingly beneath her shirt.

Did she undo her bra because it was uncomfortable?

Before I could process my surprise, she leaned against me, breathing softly.

“Mmm… I believe in you… my little brother…”

“Just lie down.”

Ji-min stumbled, accepting my support as she lay down on the bed.  Phew.

“Aw~ Jang-seok’s girlfriend~ Hello?”

“Agh!”

I turned around to see my sister greeting the onahole, her face pressed against its opening.

“I’m Jang-seok’s sister~ Nice to meet you.”

“She’s not my girlfriend!!”

“Is it okay if you don’t put it in her?  Don’t you have to put it in the hole?”

“I-It’s fine!”

“Hahaha.”

Honestly, I thought getting caught with an onahole was within the realm of possibility, but I didn’t expect to be teased about it. It was just plain embarrassing.

Ji-min lay down next to the onahole, still positioned for doggy style, and fell asleep peacefully, seemingly forgetting all the fatigue from work.  She was completely unguarded, as if she’d forgotten she was even in a man’s room.

‘I guess she doesn’t see her brother as a man…’

I tried to shake off the lingering feeling of her soft skin against mine.

I had planned to do something else before going to sleep, but the more I lounged on the sofa, the more alert I became.

And the more alert I became, the harder my dick got.

No, no.

No matter how shitty the game, it was too early to hit the game over button.

I needed to calm down by watching some porn.

I opened Pornhub on my phone and froze.

The algorithm had been polluted with gay porn showcasing male chests.

“What the hell is this?”

No matter how far I scrolled, it kept recommending the same stuff, so I reset the algorithm.

I scrolled through some short videos while playing with myself, but none of the recommended videos appealed to me. I sighed.

Nothing else could hold my attention.

The embodiment of dopamine itself was lying on my bed.

Soft, large buttocks that a loser like me could never have.

The next thing I knew, I was standing in front of my sleeping sister, dick fully erect.

“Noona. Wake up.”

If you don’t wake up, I’ll have sex with you?

People like hikikomori had no patience.

If I had been strong enough to resist impulses, to make and follow life plans… I wouldn’t have chosen a dopamine-fueled life in the first place!

Shhh, shhh, shhh!!

Like a primal beast, I started stroking myself while looking at my sister.

I even reached out and kneaded her butt!

Dopamine BOOM!

It was unbelievably soft and large.

I thought it was big even through her skirt, but seeing it in person was even more incredible.

The onahole I had been using, modeled after this very butt, now felt like nothing more than a fake silicone lump.

The onahole was naturally smaller for portability, so comparing the two only emphasized the value of the real thing.

“Noona, are you asleep?”

She must be asleep to be so still.

I rolled her onto her side, grabbed her butt, and roughly kneaded it.

I gently pulled her inner thighs apart, revealing the soft mucous membrane peeking from the side of her panties.

‘No hair.’

Noona had waxed her pussy.

It was smooth, without a single hair. Was she preparing to show it to her future husband?

But as far as I knew, she didn’t have a boyfriend…

‘Sniff.’

I couldn’t tell if she was a virgin or not, but there was no smell.

I slightly parted her lips. The opening seemed small enough to barely fit my pinky finger.

She definitely seemed like a virgin…!

I wanted to have sex. I wanted to put it in my sister’s pussy.

I wanted to be Ji-min’s first.

My mind was drifting further and further from rational thought.  If she was drunk, maybe I could just borrow her hole for a bit and get away with it?

‘No way!!’

One wrong move, one dopamine rush, and I’d lose everything.

My sister’s marriage would be ruined, and she might get pregnant with my child.

Pregnant with my child?

Ji-min?

My dick throbbed, pre-cum leaking out.

‘With that level of dopamine… it might be worth it!’

My sister was kind, so I could probably weasel my way out of it.

Then, instead of relying on my parents, I could leech off my sister as her husband!

Thump, thump.

‘I like Noona.’

Ji-min was beautiful. Big breasts, big butt, slim waist.

It was amazing how she had such a naturally perfect body despite never having anything to do with Pilates, yoga, or any kind of exercise.

“Chububub.”

“Mmm… Mmm…”

I buried my face in my sister’s large buttocks and started licking her pussy.

I figured I needed to get her wet for penetration.

I’d seen it somewhere, so I diligently licked her clit with my tongue. My sister’s pelvis and large buttocks twitched in response.

“Ah… Ah…”

Her butt moved like it was dancing.

It was proof that she was feeling the pleasurable stimulation.

Actually, she was more sensitive than I thought… Her pussy was getting incredibly wet.

Was she really “lonely” like she said?

The thought of my sister’s lonely pussy made me grab her large buttocks, which were twitching from my licking.

With my cock rock hard, I licked faster, preparing for sex.

The thought of being careful since she might wake up had long since vanished.

I just wanted to have sex, as quickly as possible.

Sister’s pussy, sister’s pussy, sister’s pussy…

Lick, lick, lick…

“Mmm… Mmm! Mmm!”

Ready…

But as I looked at Ji-min’s face and pushed my way between her legs…

The years we spent together as a family flashed through my mind, making it suddenly complicated.

“Jang…seok…”

Her murmur was the final blow.

Flooding memories of our childhood.

Even if we weren’t blood-related, this wasn’t… acceptable.

It was something an animal would do.

‘And humans are animals.’

I wrapped the blanket tightly around her upper body.

“Mmm. Mmm.”

Face covered, good.

With only her pussy and long, slender legs visible, the memories didn’t interfere.

After some struggling, I positioned her in doggy style and lifted her ass up.

Everything was ready.

I slowly stroked my cock while pressing it against her butt…

‘Ugh… But still.’

I still felt guilty about penetrating her…

Was crossing this line really that difficult?!

‘It’s Noona’s fault for letting her guard down on her last day.’

I tried to rationalize it.

I pressed my cock against her large buttocks, which were twitching from the pleasure of my licking.

I felt like I could penetrate her if I wanted to, but…

“Mmm… I believe in you… my little brother…”

I was still a loser. I didn’t have the courage to go through with it.

So…

“Lend me your strength, Rei.”

I decided to borrow the power of my onahole, Rei.

I bought it because it was advertised as a big butt product, but it was still just a small onahole compared to the real thing.

I placed it next to my sister, who was still in doggy style.

I applied lube to my cock and inserted it into the onahole.

I stared at my sister’s butt like a miser while thrusting my hips…

“…What are you doing?”

My drunk sister freed herself from the blanket, peeked her head out, and looked at me sideways.

“Onahole masturbation.”

“…Ona…hole mas…tur…bation? Hehe. Cute pronunciation.”

My sister getting this drunk after only three cans of beer was also cute…

As I thrust my hips in front of her, I suddenly pulled out…

I confidently positioned myself behind her large buttocks and aligned my glans with her pussy.

*Squish*

“Hmm?”

I felt Ji-min’s butt move as she sensed something was wrong. I wrapped my arms tightly around her waist and thrust forcefully into her pussy!

*Squelch*

“Oops! My bad!”

“Ah… Uh? Eh?”

I pretended to accidentally slip into her pussy while masturbating with the onahole!

Ji-min’s surprised pussy tightly gripped my cock. The feeling of my fully erect cock plowing into her tight, warm flesh was unbelievably good.

Dopamine…! No… something… something dangerous was being released in my brain!

I kept my hips pressed against hers, maintaining penetration.

*Squeeze, squeeze.*

I’d learned somewhere that you had to give the pussy time to adjust like this so it wouldn’t hurt when you started moving…♡

“Jang…seok?”

My cock swelled to bursting at the sound of my sister’s drowsy voice.

“Sorry!  Accident★”

*Thrust, thrust, thrust♡*

I channeled my inner cheerful loser and started thrusting into her pussy, pretending it was an accident.

“Ah, ah!? How is putting it in your sister an accident?”

Surprised by the sudden doggy style penetration, Ji-min tightened her large buttocks and thighs.

Amazingly, her inner vaginal muscles synchronized, clenching around me. It felt amazing.

“I was masturbating with the onahole and accidentally put it in your pussy.  Oh well!”

*Grind, grind, grind♡♡*

“Mmm, mm! Eh? Uh? Uh?  Accident?  An accident?”

I held onto my sister, who was still disoriented and drunk, and thrust hard into her pussy!

“I have to finish what I started, so I’ll use your pussy!!”

*Squelch, squelch, squelch.*  Her hot, soaked pussy clung to my cock as if begging me not to leave.

Whoa…  It was incomparable to the onahole…  Sister’s pussy was amazing…!!

*Slurp!!*

“Oh, ohh!?”

“Just a sec.  I’m just borrowing your pussy instead of the onahole!”

My strategy of transferring the guilt to the onahole was brilliant.

It was like in movies where shamans sacrificed innocent pigs or chickens during rituals.

With the mindset of accidentally getting my dick caught in my sister’s pussy while using the onahole, I tossed the onahole under the bed and pounded her pussy with all my might!

*Thrust, thrust, thrust, thrust!!*

By framing it as using my sister’s pussy as an onahole, I bought myself time to pound her ridiculous justification!

“Ah, this is amazing… Something dangerous is being released in my brain…  My dream girl… Ji-min’s big butt…!”

*Pound, pound, pound…!*

Ji-min could only helplessly clench her pussy around my thrusting cock.

Whether it was the alcohol or sleepiness, she offered no real resistance.  I pressed my hips against hers and diligently copulated.

The once-in-a-lifetime dopamine rush of raping my sister was coming!!

“Ah, uh, ah.  Ah!”

“If I’m about to cum, I’ll cum inside you!  Noona, get pregnant with my baby and ruin your life!”

At the word “pregnant,” Ji-min’s pussy tightened.

*Squeeze, squeeze…♡*

*Thrust, thrust, thrust♡*

“Get pregnant with my baby! Get pregnant with a loser’s sperm!”

“Ugh, gah, uh!  Hah…! Hah…! Calm down. Slowly… Slowly in Noona’s pussy…  Ahh…!!”

My sister, drenched in sweat, put up a feeble resistance.

She tried to wiggle her butt and pull away, but I held her tight, pressing my hips against hers.

I was definitely born to cum in this amazing female pussy!!

“Get pregnant! Get pregnant!”

Ah~ Ji-min’s pussy was insane…  Her pussy kept clenching, repaying kindness with animosity…♡

*Thrust, thrust, thrust…!*

I pressed my hips against Ji-min’s large buttocks and thrust rapidly.

I’m cumming.  I’m really going to cum in my sister’s pussy…!

*Grind, grind, grind♥*

Was it okay for Ji-min’s pussy to feel this good?!

I couldn’t stop thrusting!

“Ugh, kuh, ugh, uh, gah.”

With each thrust, Ji-min let out short, surprised moans, not knowing what to do.

*Squeeze, squeeze♥*

We were having sex… We were having sex… The initial, explosive excitement, fueled by awkward excuses, had melted into a thick, viscous fluid coating the bed.

Now, I was rhythmically pounding Ji-min’s large buttocks, taming her pussy with my hard cock.

*Thrust♥ Thrust♥ Thrust♥*

“Hnn, hngh♥”

Ji-min let out a brief, whimpering sound and caught her breath.

My sister was reaching her climax from my cock…!

“Noona…! I’m going to irresponsibly cum inside you…!!”

“Hngh, mm…!”

—–CROW—–