Just past 8 o'clock
Jinwoo's family got home.
Minji was the first to grab some clothes and headed to the shower on the first floor to wash up.
Sohee clutched her shopping bag with her brand-new pink dress from some fancy brand, as if it was precious, and went up to her room on the second floor.
Mom went into her room to change into something more comfortable and shut the door.
Jinwoo moved the groceries and some small stuff they shopped for today into the kitchen, then went back up to his room on the second floor.
* * *
Jinwoo lay sprawled on the bed, checking the time.
8:15 PM
A long day that had stretched from last night was nearing its end.
In about two hours, Jinwoo would be connected to his mom and his new family in a whole new way.
He would repeatedly plunge his huge cock into his mom's pussy, stirring it over and over.
Then what kind of person would his mom turn out to be for Jinwoo?
Just the thought made Jinwoo's heart race wildly and roughly.
It seemed like his mom wasn't completely unaware of terms and tools related to BDSM.
To think she handed over her card to her son as if she was paying for a service, ordering vanilla...
Jinwoo felt a bit resentful towards his mom.
-Not that he planned to play along till the end-
Judging by his mom's behavior so far, she didn't seem like someone who could be satisfied with a normal relationship or inclination.
Jinwoo felt the box of condoms he'd stashed in his cardigan pocket.
It was a pack of ten large condoms.
This small box seemed to be making the upcoming act with his mom, and the change in their relationship two hours from now, feel more real.
* * *
Jinwoo headed down to the living room on the first floor.
He plopped down on the living room sofa and turned on the TV.
The TV was showing a popular weekend variety show.
Mom, having changed into comfy cotton tee and pants, came out to the kitchen to organize the groceries and items they'd shopped for today.
Despite the casual clothes, it was a struggle to hide the overwhelming allure emanating from her body.
While watching the variety show on TV, Jinwoo sneakily glanced over at his mom.
Mom didn't particularly look back at Jinwoo or show any special reaction.
She just went on sorting things out, seemingly without a care.
At that moment, Minji came out of the shower room.
She was wearing a baggy, apricot-colored pajama with buttons at the front.
Seeing Jinwoo sitting on the living room sofa, Minji approached with a smile.
"Bro, wanna see something cool?"
Minji, suddenly speaking up after her shower.
"Huh? Something cool?"
Jinwoo replied, somewhat taken aback.
Minji sneakily glanced at Mom in the kitchen.
Mom was busy organizing ingredients in front of the fridge.
Minji then grabbed the hem of her pajama top with both hands and pulled it up over her neck.
In an instant, Minji's white underflesh caught Jinwoo's eye.
Startled by Minji's action, Jinwoo's eyes widened as if his breath had stopped, staring at her.
"It's the first time I bought and tried it on today, hehe~"
Minji's innocent expression.
Looking closely, under the apricot-colored pajama top pulled up to her neck, the chest area was covered with a soft, white fabric.
Minji had gone with Mom to the lingerie department at the department store today.
It seemed she wanted to show off the bra she bought for the first time to her brother.
-Though it's called a bra, it felt more like a cover-up without wires, just fulfilling the formality-However, it would never have been permitted by their mother for Minji to lift her clothes and show her underflesh to her brother like this.
Minji probably knew this too, yet she was lifting her clothes to show Jinwoo her first bra, possibly within sight of Mom in the kitchen.
Normally, Mom would have scolded her by now.
Didn't Mom see it?
Jinwoo turned his head to look towards the kitchen where Mom was.
In an instant, his eyes met Mom's.
Mom averted her eyes, her face turning red as she busily pretended to be occupied with work.
A strange excitement enveloped Jinwoo.
Mom was pretending not to notice the situation where Minji was exposing her underwear to Jinwoo.
Had Minji realized it now?
That Mom treated Jinwoo differently now... that even such incidents could be condoned by Mom through Jinwoo... that Mom was becoming dependent on Jinwoo...
* * *
"Minji, you're so pretty~ You've become a real woman now, haven't you?"
Jinwoo said loudly enough for his mom to hear, reaching out to stroke Minji's head as she lifted her clothes up to her neck to show off her underwear.
Watching her, Jinwoo felt a slight stir in his member.
"Hehe, Sua, who's younger than me by birth, has been doing this kind of thing for a while."
"Oh really? Well, it's good you're doing it now too~"
Jinwoo thought, after all, it's just a piece of fabric without wires, why bother about the right time to start wearing it?
"Bro, wanna hear something fun again?"
"Huh? What is it?"
Minji suddenly brought her mouth close to Jinwoo's ear and whispered quietly.
"There are countries in the world where cousins can get married... Did you know?"
Minji's unexpected comment made Jinwoo feel somewhat eerie, recalling the time she whispered 'pervert' while he pretended to be asleep with an erection.
"Wha..what are you talking about all of a sudden?"
Jinwoo spoke, seeming flustered.
"Just saying, hehe~"
With that, Minji went into her room.
As Jinwoo watched her leave, he suddenly realized his thing was fully erect without him noticing.
Sitting there, he felt his mom's gaze from the kitchen.
Mom had seen Jinwoo's erection after the conversation with Minji.
"Mom?"
Jinwoo called out to his mom in the kitchen without any attempt to cover up his erection.
"Uh..uh? What?"
Mom stuttered, barely managing to respond.
"Did you change your pants?"
"Oh...oh this? Yeah...I just changed into something comfortable before I shower."
Mom spoke as if she was making excuses for a crime she had committed.
"I liked it better when you wore skirts, Mom."
".....Yeah"
Mom simply responded and without another word, went back to tidying the kitchen.
Jinwoo thought that from now on, there would be no more pants for Mom at home.
A tremendous sense of satisfaction and accomplishment Jinwoo waited for the night to deepen.
* * *
Night
A time when the family should all be washed up and asleep.
Jinwoo, fully erect, walked through the dark living room and into the master bedroom.
The light was on in the master bedroom.
Mom, wearing a blindfold and exposing her ample breasts, lay on her side, giving Minji an arm pillow.
Even though they both knew what was coming next, Mom was wearing a blindfold, pretending not to notice Jinwoo waiting for her.
Jinwoo didn't call out to check if Mom was awake.
There was no need to be cautious like the day before.
He immediately reached out and placed his hand on Mom's exposed breast.
Mom flinched at the touch.
Jinwoo gently kneaded her breast with his hand.
He then used the tip of his fingers to draw circles and gently rub on her nipple.
Mom's breathing grew rough, as if agitated.
Using his thumb and index finger, Jinwoo pinched her nipple, pulling it gently.
-Being careful not to hurt her-
"Ah~"
Mom let out a long, distressed sigh.
Jinwoo placed one hand back on Mom's breast, kneading it, and with his other hand, he touched Minji's chest, feeling the fabric of the bra he had seen earlier.
Jinwoo was comparing the breasts of mother and daughter.
-Of course, they were not really comparable-
He squeezed Minji's breast a bit more firmly.
Minji's flesh felt pleasantly in his hand.
Minji's body, although still young, was growing diligently.
Minji was asleep, sucking on one of Mom's breasts.
Was it instinct?
Even in her sleep, like a baby, she did not let go of Mom's nipple.
Jinwoo brought his mouth to the opposite nipple of the one Minji was sucking on.
He covered the nipple with his lips and slowly rubbed it with his tongue.
Despite Minji's presence, Mom was writhing intensely.
Did she think she no longer needed to hide her reactions?
Or had her body become unable to hide them?
While he sucked and licked the nipple, Mom's movements did not cease, almost like convulsions.
Jinwoo removed his mouth from Mom's nipple and lightly touched the one Minji was sucking on with his finger.
Mom flinched again.
After a moment's thought, Jinwoo lifted Mom's lavender robe.
Following Jinwoo's instructions from earlier in the day, Mom was still not wearing any panties.
Mom had nothing on under the robe.
Mom's groin was extremely wet with her fluids.
The fluid running down her thighs shone unusually brightly.
Jinwoo wet his finger with Mom's flowing fluid and applied it evenly to Minji's lips, who was still sucking on Mom's nipple.
He also applied it around the area where Minji was sucking.
"Ah~"
Mom let out another long, distressed sigh.
Jinwoo carefully brought his mouth to the nipple Minji was sucking on.
And as if intending to consume all of Mom's fluids he had just applied, he meticulously licked Minji's lips and Mom's nipple with his tongue.
Mom's body writhed intensely again.
Jinwoo found Mom's reactions amusing.
Awake, yet unable to speak, she accepted all of Jinwoo's antics.
Jinwoo got up and embraced Minji, facing her.
"I'll be back soon, Mom! Just lie back and wait!!!"
Jinwoo commanded Mom.
He then left the master bedroom, taking Minji with him.
The night was long, and Jinwoo was in no hurry.