It was a little past 4 PM when Jinwoo's family was on the subway, heading to the department store.
It being the weekend, there were a lot of families and couples on board.
The train was moderately crowded.
Minji, as always, clung tightly around her mother's waist and wouldn't let go.
"Ahh, when is Minji going to grow up and give mom some space?"
Muttering to herself, mom was looking at Minji clinging to her and felt both endeared and pitiful.
"Hehe, I'm going to stick with mom forever like this, you know?"
Minji said cheerfully, looking up at her mom.
If Jinwoo hadn't chosen that pink skirt after her panties got stripped off, mom's bare skin would probably be showing under her skirt.
Despite that, mom was exchanging disgustingly ordinary mother-daughter banter with her.
Sohee, the older sister, was busy texting someone on her smartphone across from where mom was.
Jinwoo stood behind mom, diagonally, holding onto the handle and watching Sohee and Minji.
Jinwoo was looking for an opportunity to sneak a touch on mom's ass.
He really wanted to check if mom was wearing anything under her skirt.
Who knows, maybe mom had changed her mind and put on some panties when she changed clothes.
The short pink skirt that started from mom's slim waist and clung to her curvy hips thrilled Jinwoo.
Just lifting it lightly would expose mom's bare ass.
Jinwoo mustered the courage and lightly touched mom's ass.
Startled, mom twitched but didn't turn around, trying to act cool.
Jinwoo slowly moved his index finger down from the top of mom's ass, as if drawing a line.
His finger didn't catch any panty line on mom's ass.
Feeling triumphant, Jinwoo flicked his finger off mom's ass.
Mom twitched again as Jinwoo's finger flicked off her ass.
"Mom, what's wrong? You feeling okay?"
Minji, holding onto mom, asked worriedly after sensing her twitch.
"No, no, just hiccuped, hic!"
Mom answered, pretending to hiccup, seemingly flustered.
Sohee glanced over at mom and Jinwoo while still on her smartphone.
Jinwoo was pleased with how the situation was unfolding.
Mom, although startled by being touched by her son, was desperately acting to hide that fact from the rest of the family.
She didn't even scold Jinwoo, nor did she mention it at all.
Jinwoo wanted to further embarrass and provoke mom to react.
* * *
They arrived at the department store.
Walking through the passageway connected to the subway station, they entered the huge department store.
With amenities like a swimming pool, skating rink, aquarium, and an amusement park, it was a massive shopping mall complex.
Sohee seemed familiar with the layout of the department store, excitedly leading the family around like a dog let out for a walk.
Clearly, Sohee had come to the department store often with her friends.
-The expensive clothes piled up in Sohee's room were probably mostly bought here.-
Sohee picked out some clothes first and then planned to continue shopping slowly around the department store.
She seemed to have already checked out some brands and designs and led the family confidently.
"Sohee, walk slowly, you might trip over~"
Mom said, worried Sohee might bump into someone as she was rushing ahead.
"Hurry, hurry~ This way!!"
Sohee urged the family from a distance ahead.
* * *
Sohee led them to a store in the luxury section, popular among young people.
-Although expensive, it was still within reach for students to afford.-
Sohee picked out two items from the display that she had seen before.
The first was a pink dress with a deeply cut chest area.
It clung tightly to the body, and Jinwoo would probably be turned on all day if Sohee wore it.
-Mom would never allow it.-
The second was a less revealing horizontally striped dress, but still made of ultra-slim material.
Although less provocative, it seemed enough to turn Jinwoo on.
This was probably Sohee's strategy to get permission by picking the lesser of two evils.
"They're both too clingy. I said no sexy clothes, pick something else."
Mom sternly refused Sohee's choices and suggested alternatives.
"No shallow tricks are going to work on mom."
"Whine~ If I can't wear even this, what am I supposed to choose? All my friends wear this kind of stuff comfortably~"
Sohee started whining in front of mom, sounding somewhat wronged.
"Sohee, are you going to do this here? Did you forget what mom said before?"
Mom spoke in a lowered voice, creating a threatening atmosphere.
Knowing well what could happen if she pushed further, Sohee sulked with a downcast expression, unable to say anything more as she pleaded with her body language.
* * *
Jinwoo thought this was the perfect chance to torment mom.
He wondered if mom would really listen to his requests openly in front of Sohee and Minji.
"Mom, isn't that alright?"
Jinwoo chimed in, as if casually joining the conversation.
"...Huh?"
Mom seemed slightly taken aback by Jinwoo's interjection.
"If Sohee wears that, she'd look like a real celebrity."
Jinwoo deliberately pointed to the more provocative first dress.
"That's... too tight and revealing."
Mom avoided Jinwoo's gaze, clearly uncomfortable.
"But isn't mom's skirt even more provocative right now?"
Jinwoo intentionally put mom on the spot.
"What... what are you talking about? Why would my skirt be provocative?"
Mom was genuinely flustered, glancing at Sohee and Minji, stammering in her response.
"No matter how much fabric covers it, if it's revealing underneath, it's provocative!"
Jinwoo pressed on, teasing mom about the state beneath her skirt.
"What... what is he even talking about?"
Mom's face turned red as she spoke.
"If others wear it, it's not provocative, but if mom and Sohee wear it, it looks more provocative, so you have to consider that."
Mom couldn't say anything and just blushed deeply, listening to Jinwoo with her head bowed.
"Sohee's figure is inherited from mom, so if Sohee looks provocative, it's actually mom's fault, isn't it~!!"
Jinwoo scolded mom as if blaming her outright.
After a moment of silence, mom bowed her head as if being scolded and then made up her mind with a determined expression and spoke to Sohee.
"Then... Sohee, why don't you try on that dress and come out? It might look different when you wear it."
"Okay... I'll change and come out, mom..."
Sohee said this and headed to the fitting room in the store.
While being treated as if scolded, mom listened to Jinwoo's words.
Sohee went into the fitting room to change, leaving Jinwoo, mom, and Minji behind.
Jinwoo discreetly looked around.
The store employees were busy attending to other customers and weren't paying attention to them.
Jinwoo slowly approached mom.
Then, in front of Minji, he stroked mom's head again.
"Mom, you're really obedient now~ Even blushing looks cute on you. I'll have to reward you tonight."
After tonight... it would be the third time Jinwoo had stroked mom's head in a public place, even with Minji watching...
Mom didn't avoid or reject Jinwoo's touch and seemed to completely submit to him.
Thinking about having such a mom tonight excited Jinwoo even more.
Minji whispered in a tiny voice from the side.
"Mom... Brother... both of you are weird~"
Mom shuddered in response to Minji's words.
Was it guilt or the thrill of deviance?