Sohee gripped Jinwoo's cock tightly, wrapping around it like a vice.

Sohee was entwined with Jinwoo, embracing his entire being with her body.

Jinwoo continued his thrusting, feeling the strong pressure of Sohee's pussy.

-Thud! Thud! Thud! Thud! Thud!

"Ha... Ha...! Haa! Haa!"

Sohee's moans echoed throughout the house.

"It's... so big! Ha! Haa! Ji... Jinwoo, it's so hot... it feels like I'm burning, haa!"

The sensitive inner flesh of Sohee, thoroughly softened.

Jinwoo's raw cock thrusting in and out, scraping against Sohee's vaginal walls without mercy.

With a heat that seemed to melt and pleasure that felt like it would explode, Sohee was on the verge of losing her mind.

Now, Sohee trembled uncontrollably, desperately clinging to Jinwoo, riding the wave of climax over and over.

Jinwoo unwrapped Sohee's legs from around his waist and spread them to the sides.

He placed his arms under her knees and folded her thighs up towards her chest.

In that position, he grabbed her arms to keep her from sliding up.

A position of pressure, as if for breeding.

"You're mine! I told you I'd make you feel good!!"

Jinwoo's desperate cry, almost a wail.

Jinwoo's thrusts were relentless, aiming for the climax.

-Thud! Thud! Thud! Thud! Thud!

The sound of Jinwoo's pounding, irregular like a worn-out machine part, filled with passion.

"Haah! Haa! Haang! Jinwoo, Jinwoo, haa!!"

Sohee was now moaning uncontrollably, calling out Jinwoo's name.

"Ah, Sohee, Sohee! Ugh!"

Both of them called each other's names as they reached their climax almost simultaneously.

-Thrust, thrust, thrust!

Jinwoo's seed filled Sohee's womb and pussy completely.

Jinwoo's mind went blank, and the anxiety and tension condensed in excitement evaporated instantly.

A sense of regret mingled with the ecstasy of his body's tremors.

Jinwoo ended up ejaculating inside Sohee.

"Hngh, sniff, sob."

After the ejaculation, the sound of sobbing came from Sohee.

A warm stream flowed down Jinwoo's temple.

Sohee was crying.

The air on the bed became somber.

Even after the ejaculation, Jinwoo and Sohee held each other's bodies tightly.

Jinwoo's cock, having achieved its purpose, was still inside Sohee's body.

**

After some time passed, Sohee quietly pushed Jinwoo aside, got up, and went to the first-floor shower to wash herself.

Sohee washed off Jinwoo's semen and saliva that had been smeared on her body all night with the shower water.

She inserted her finger deep into her pussy to scrape out the semen Jinwoo had deposited.

-Scrape, scrape, scrape.

The high-viscosity white fluid, clinging to the surface of Sohee's vaginal flesh, slid down her fingers and onto the floor.

The lingering tingling sensation of Jinwoo's massive tool rubbing against her textured, shiny vaginal walls was still vivid.

After repeating the scraping action several times, Sohee spread her opening and cleansed her pussy with the shower stream.

The nostalgic sense of climax that had been felt all night briefly stirred Sohee's body.

Sohee directed the shower head at her clitoris.

Inhaling the scent of Jinwoo's semen on her hand, she sprayed the strong water stream on her clitoris.

"Haa! Master~ Master! Please take me, haa!"

Sohee muttered in a small voice, moaning and pleading.

Recalling the stimulating warmth of the thick fluid that had just been deposited in her womb and pussy, Sohee reached climax again.

After the climax, Sohee sat on the shower floor, trembling.

Overcome with an ecstatic sense of taboo, Sohee trembled and cried again.

**

Sohee finished her shower and came out of the dressing room wrapped in a towel.

"Sohee, are you okay?"

Jinwoo, who had been anxiously waiting in the living room, approached her.

Sohee glanced at Jinwoo for a moment.

Jinwoo stood there in a pair of red briefs, half-erect.

His cock, swelling more and more, seemed about to burst out of his briefs.

-Whack!

Feeling some kind of threat, Sohee smacked Jinwoo on the head, blushing.

"Ouch!"

Jinwoo held his head, groaning.

"Why am I yours?! You idiot!!"

Sohee spoke with a hint of tears in her eyes, sounding sorrowful.

"What?... What?!"

Jinwoo responded, confused by Sohee's words.

"What are you going to do if I get pregnant, Jinwoo?! It won't just end as a joke, you idiot!"

Sohee raised her voice, pretending to smack Jinwoo on the head again.

Jinwoo wanted to say he'd take responsibility if Sohee got pregnant, but he couldn't bring himself to say it.

Jinwoo had never seriously considered impregnating his mom or sister.

-Except for Aunt Haeju- Jinwoo always thought he shouldn't impregnate his family members, even though he had incestuous sex and play with them.

It might have been because of the unbreakable bond of family between mother and son, or sister and brother.

Pregnancy was the only taboo act that could break that unbreakable bond.

-Unless he planned to keep the father of the baby a secret from the rest of the family like Aunt Haeju-If Sohee really got pregnant and gave birth to Jinwoo's baby after the recent ejaculation, it would be irreversible.

The two siblings would have to live as the baby's parents for the rest of their lives.

It was a problem far beyond merely exchanging incestuous insults and having sex.

Being in such a relationship with Sohee wasn't an issue, but it would be too shameful for the baby and the rest of the family.

"You've done everything you wanted now, haven't you?! How long are you going to keep calling me by my name like that?!"

Sohee declared the end of the sexual play, glaring at Jinwoo, who couldn't find an answer.

"So... sorry."

Jinwoo apologized, shrinking back and bowing his head.

The two of them returned to being brother and sister.

Even though he felt a bit unfair, Jinwoo's feelings of guilt deepened, knowing how hard Sohee had tried to accept everything from him since last night.

"After doing it with you, do you think I would've done it with another guy right away?!"

"Get the condom from Sinbi on Friday and use it with her! She gave it to me for you!"

"And look! You did it with Mom and Auntie, so why only me?!"

Sohee's words, delivered in a scolding manner, gave Jinwoo a mix of relief and sadness.

Sohee seemed to understand why Jinwoo had gotten excited and inserted into her without a condom and ejaculated inside.

Fortunately, it seemed Sohee hadn't been with another man.

The remaining condom had been given to Sinbi.

And it seemed Sohee had no intention of canceling the Friday meeting.

Jinwoo understood why Sohee felt wronged and said what she did.

Even though he had told her they could continue their secret sexual relationship like cheating lovers even if they had lovers, Jinwoo had lost his cool and cried when he saw the missing condom and ejaculated inside Sohee.

Recalling the events, Jinwoo felt a deep sense of guilt and embarrassment.

Jinwoo stood there, bowing his head like a child being scolded, feeling sorry.

But despite his feelings and expression, Jinwoo's cock stood stiffly, protesting towards Sohee.

Jinwoo's impressive erection strained against his briefs, bulging towards Sohee.

"Sigh..."

Sohee sighed deeply, looking at Jinwoo's cock.

She glanced at the clock on the living room wall.

It was just after 5 a.m.

She should have been getting ready for her morning jog.

"We've sweated a lot, so you should shower too, Jinwoo. This time, use the condom properly! There's plenty of time before school. Take it slow."

Seeing Jinwoo's erect cock, Sohee reluctantly suggested having sex with the remaining condom.

"Huh? You're not going jogging?"

Jinwoo, surprised by Sohee's suggestion, asked a silly question despite knowing the answer.

"Do you think I have the energy for a jog after rolling around like that, you idiot?!"

Sohee raised her voice, scolding Jinwoo again.

"Oh... yeah... I guess."

Jinwoo thought it was odd to have no energy for a jog but still have energy for sex, but he answered anyway.

"I'm going to lie down in your room, Jinwoo. My room is dirty with wet sheets and pillows! Hurry up and wash up and come up! Got it?"

Sohee said and then quickly ran up the stairs, as if escaping.

Sohee's lewd back, wrapped in a towel.

The slick lubricant dripping down her thighs.

Jinwoo's cock swelled up again, ready to bond with Sohee as siblings.

1

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