As Mom and Minji prepared the food, Sohee Noona came downstairs.
She was wearing a white, short-sleeved turtleneck with a cutout right in the chest area.
Due to her large bust, the hole was stretched wide open, exposing a significant amount of skin.
Below, she wore a short maroon skirt that clung tightly, showing off the sleek contours of her firm thighs.
Sohee, an athlete until middle school, had never been bad at dressing.
She typically preferred plain and tidy clothes that aligned with Mom's taste.
But lately, she had been wearing styles she normally wouldn't… the kind that dangerously tested Mom's temper with their level of exposure.
Jinwoo suspected it was the influence of the friends she had seen yesterday.
"Oh? Is everyone already here?"
From the top of the stairs, Sohee Noona, as if making a statement, descended with a walk slightly more exaggerated than usual.
Catching Jinwoo staring blankly at her, she scoffed scornfully and sat across from him.
"Hey Minji~ What do you think of your sister today?"
After sitting down, Sohee asked Minji.
"You look pretty! Just like a celebrity, hehe~"
Minji generously complimented her older sister.
"Oh Minji, you always say things so sweetly. Should I buy you something tasty?"
Sohee Noona seemed more lively than usual, and Jinwoo was a bit startled.
"Sohee, is that a new outfit? I saw a bunch of clothes piled up in your room yesterday."
Mom began to nag, clearly annoyed by Sohee's outfit.
"They aren't new; I just went shopping with friends and bought a few things at once."
Sohee Noona pouted as if wronged by Mom's words.
"Then you should keep your room tidy, not like a pigsty!!"
Mom continued nagging.
"I'm tidying it up bit by bit, okay~"
Sohee Noona replied in a voice that seemed to shrink into herself.
Jinwoo thought Sohee Noona suddenly looked like a deflated balloon at a fair.
As his older sister's body hunched, her huge breasts seemed to stand out even more, accentuating their curves through the hole in the turtleneck sweater.
Jinwoo's body began to react uncontrollably.
He pulled his dining chair closer to hide his condition.
Seeing this, Sohee Noona glanced at Jinwoo, then straightened up and said to Mom in a coquettish tone,
"Mom~ Aunt Haeju said she'd be coming over after school ends today."
"Haeju? Why?"
"She called last night and said she'd buy me some clothes."
"Suddenly clothes?"
"I don't know, but I'll be at Aunt's house and back before dinner, so it's okay, right?"
Sohee Noona seemed excited about it today.
Mom was different from the open-minded Aunt Haeju.
Aunt Haeju was particularly close to Sohee Noona among the siblings.
They had similar interests and got along well.
Sometimes she would buy gifts out of the blue like this.
Dinner was ready, and Jinwoo's arousal hadn't subsided by the time they finished eating.
Unlike yesterday, being surrounded by family while secretly aroused added a certain thrill.
Glancing now and then at Sohee Noona's breasts and occasionally making eye contact, Jinwoo saw her glance back lazily once, but then she seemed not to care much.
He enjoyed the delusion of having all the women in the house under his control simply by being secretly excited.
Jinwoo was enjoying the calm feeling in his own way.
But that feeling was brief.
As dinner ended and Jinwoo was timing his return to his room to avoid detection, a heavy feeling overwhelmed him.
Mom turned to wash the dishes, allowing Jinwoo to escape to his room.
Despite the vigorous masturbation the day before yesterday, he still responded earnestly to Sohee's body.
Looking at himself, Jinwoo felt a sense of awe at his own stamina.
Waiting for the erection to subside, he packed his bags for school with a feeling of just going through the motions of his daily life.
**
Jinwoo arrived at school, but Daeho was nowhere to be found.
Daeho eventually arrived near the end of the first period, and Jinwoo thought it might be related to something involving Aunt Gyuri.
The catalyst for all of this!!
If Daeho hadn't shown Jinwoo Aunt Gyuri slapping her own ass, there would've been no need to ejaculate on his Mom's or his sister's panties, or Minji's face.
After lunch, Jinwoo subtly asked Daeho about Aunt Gyuri.
"Is everything okay with your mom?"
Daeho sighed deeply when Jinwoo brought up Aunt Gyuri.
Listening to him, it seemed his dad had been transferred to headquarters, so they'd be living together permanently now.
Daeho was lamenting, and Jinwoo felt a twinge of regret, reminded that Aunt Gyuri had a husband all along.
Aunt Gyuri: Mom's friend, and a friend's mom.
It was an achievement worthy of awe for teenage boys just entering puberty—having taken risqué photos and witnessed such things.
After hearing the sad news from Daeho, Jinwoo suggested they blow off steam at the PC café.
However, Daeho had other things to do and went his own way.
Jinwoo didn't want to pry into why Daeho was late in the morning or why he declined the PC café invite.
Heading home after school, Jinwoo opened the photos of Aunt Gyuri he had taken during her yoga session.
He was seriously pondering what to talk about next time they met.
**
Dinner time came, and the family gathered again.
Sohee Noona had returned from Aunt's house with hands full of shopping bags and a satisfied look on her face.
She went to her room to change and prepared for dinner.
Mom and Minji were finishing setting up for dinner, and Jinwoo spread out his homework in his room before heading downstairs when it was time to eat.
He was unaware of the severe ordeal about to strike like a storm.
**
At dinner time…
Sohee Noona's outfit was a black lace, boxy tee that clearly revealed her underwear.
Her large breasts were boldly outlined by the maroon bra she wore.
The look showcased a slender waist and smooth belly all the way down.
Tightly clinging, light gray shorts followed the curve of her hips.
She sat directly across from Jinwoo, looking at him with a confident expression as if asking, "What do you think?"
Jinwoo, inevitably, became aroused and, unlike the morning, couldn't find a place to rest his eyes.
"What are you wearing?"
Mom spoke in an incredulous tone, looking displeased at Sohee.
"Pretty, right? Aunt picked them out for me today, hehe~"
Despite knowing she'd be scolded, Sohee Noona tried to brush it off with carefree charm.
"Your underwear is showing, Sohee. Jinwoo is here; how can you wear that?"
When told that her sister had chosen it, Mom lightly touched her forehead in frustration.
"So what? He's my brother. My friends have their dads and male family members around, but they still lounge around in their underwear at home, so what?"
Sohee Noona pouted, uncharacteristically talking back to Mom.
"That's in houses that have lived like that since they were young!!"
Mom's voice sharpened, her anger rising.
"But we used to live like that too before Jinwoo went to middle school, didn't we?"
Sohee Noona spoke as if wronged.
"That was then, not now!"
Mom stood her ground.
"But as long as Jinwoo is okay with it... Jinwoo, you're okay, right?"
Sohee Noona suddenly pulled Jinwoo into the conversation with a pleading tone.
"Uh... yeah..."
Jinwoo mumbled, glancing at Sohee's breasts and responding involuntarily.
Mom clicked her tongue sharply at Sohee, biting her lower lip and rolling her eyes up and down.
"Are you not going to change your clothes?"
Mom was nearly at her limit.
"I'll eat first~ I can change afterward."
It was a clear act of defiance.
"Can't you see Jinwoo is uncomfortable? Aren't you going to listen to me?"
Mom was probably referring to Jinwoo's physical state, and Jinwoo felt a pang of guilt.
"Why does my discomfort matter when it comes to what I want to wear? And Jinwoo is fine with it~"
Sohee Noona practically whined her response to Mom.
"Is that how you're going to talk? Can you just wear and take off whatever you want at home? What if Jinwoo gets the wrong idea and something happens? Will you take responsibility then?"
Mom's words struck like a dagger, leaving Jinwoo feeling dazed.
"Ugh~ What nonsense are you talking about? I wear what I want at home; what does it have to do with Jinwoo being a pervert~!!"
Finally, Sohee Noona burst out in frustration.
"'Ugh'?! Get up! Stop eating! How dare you talk back to me and call your brother a pervert? Do you want to be beaten senseless today?!!"
And with that, Mom completely exploded, searching for something to use as a weapon.
Sohee Noona was startled and began to sob.