Aran's Slapper Whip
Kim Mingyu sat on the sofa, staring down at his Twitter screen.
Jiwon had left a comment herself.
“Does… my asshole really look that pretty…?”
The line made him chuckle under his breath.
She’s really something. Cute… and somehow lewd at the same time.
He found himself repeating her name in his head and briefly considered sending her a text.
Just then, his smartphone began to ring.
An unknown number.
“…Who’s this?”
Mingyu hesitated for a moment before casually tapping the answer button.
“Hello—”
“Kyahahahahahahaha!”
A familiar laugh burst through the receiver.
That distinctive tone alone told him exactly who it was.
…It’s Aran.
He instinctively turned his head to check the calendar.
The day before swimming club activities began.
Ha… Thank god it’s not today.
Just as he started to relax, her voice came through again.
“Mingyu, Mingyu~? You don’t have class today, right~? Of course you’re home~! Get over to the club room right now! Before I smash your house to pieces with my iron fist! Pfft… ah, that’s hilarious.”
Her tone was playful and excited, but Mingyu felt a faint tension crawl down his spine.
“Ah… well, about that, ma’am. Today I’m a little—”
“You’re not coming~? I can really come drag you out myself, you know~? You get that, right~? Grrr, grrr~!”
She laughed like it was a joke, but Mingyu knew better.
Kim Aran wasn’t the type to just talk.
She was the kind of person who would actually look up his student records, check his address, and show up at his door without hesitation.
She acted innocent, but she was hiding something.
Mingyu stared at his phone for a moment, then let out a small sigh.
Hmm… I guess I’ll have to face her eventually. The fact that she saw me having sex with Jiwon and still hasn’t done anything is actually making me more uneasy…
“Alright… I’ll head out now.”
With a cautious feeling in his chest, Kim Mingyu made his way to school.
Should I at least text Jiwon that I’m going to school for club stuff? No, forget it… Why should I report to her? I’m the master here… master… right?
While muttering to himself and wondering what kind of conversation he was about to have with Kim Aran, his feet had already carried him past the school gates.
Mingyu took a deep breath.
He arrived in front of the swimming club room and knocked lightly.
A bright, cheerful voice answered from inside.
“Mingyu!? Come in~ The door’s open~”
The moment he opened the door, he was hit with the familiar smell of chlorine and disinfectant.
And then there was her.
Kim Aran.
She was wearing a bright blue swimsuit and casually towel-drying her wet hair.
Water droplets still clung to her skin, glistening under the lights.
Her swimsuit was nothing like a normal uniform.
It was a one-piece with a deep V-cut that started below her chest, but the cut was closer to a T-back, leaving almost her entire backside exposed.
The high-leg cut hugged her waist and lifted her hips, the fabric so tight it dug into her flesh.
Her slim yet curvaceous thighs and hips turned the swimsuit into something far more provocative than mere clothing.
Kim Aran noticed Mingyu’s gaze and smiled lightly.
“Oh my. Our Mingyu doesn’t even get flustered by his teacher in a swimsuit anymore?”
She draped the towel around her neck and spoke with an annoyingly bright expression.
“Woo~ After what happened with Jiwon unni in the practice room, maybe you’ve become a bit more manly?”
Mingyu reflexively looked away.
“N-no, that’s not…”
“Mmm~ Mmm~ It’s fine, just teasing. You’re still such a boy, it’s cute. But… our Jiwon unni seems to see more than just that cute side in you, doesn’t she?”
Her eyes narrowed slightly as she smiled, her tone piercing.
It was a playful smile, but something unreadable lingered behind it.
Mingyu realized he couldn’t run anymore.
He had to face this situation head-on.
He steadied his breathing and spoke quietly.
“So… I…”
Looking her straight in the eyes, he asked.
“If it’s not too rude… is there something you want from me, ma’am?”
She tilted her head slightly, then slowly raised a hand to rest on her chin.
“Hmm… Hmm…? Ah, maybe… money?”
She dragged out the end of her sentence, then nodded with a bright smile.
“Yeah! That’s it! A huge amount of money, right!?”
Mingyu froze in confusion.
“Huh…?”
Money…? Money? Wait, what money would I even have…
Before he could finish the thought, Kim Aran pointed at him with her finger and leaned forward.
Then she grabbed her stomach with one hand and burst out laughing like she couldn’t hold it in.
“Puhahahahahaha!!! You actually believed that, Mingyu!? Puhehehe… Ah, this is too funny… What do I do… Of course not~ Mingyu~? Right~?”
Still laughing, she straightened up and caught her breath.
“Don’t worry. I’m not going to hurt you or Jiwon unni… or blackmail you…? Well, blackmail might be a stretch? Haha.”
She walked over lightly and naturally wrapped an arm around Mingyu’s waist, guiding him toward a chair.
“Come on~ Sit down~ Don’t be so tense~”
Once Mingyu was seated in a daze, Aran casually perched on the edge of the desk right in front of him.
With one leg lightly crossed, she looked down at him.
“Well… what I want?”
She slowly tilted her head.
“Just… to satisfy a little curiosity?”
When Mingyu didn’t respond, she fixed her gaze on him and spoke.
“That conversation I overheard on the stairs before… the word ‘bitch’… that was Jiwon unni, wasn’t it?”
Mingyu’s body stiffened.
“Well… even a child could figure that one out. You’re the ‘Master,’ and unni is the ‘bitch’… meaning she’s the one being dominated.”
She tilted her head slightly.
“Right…? Am I wrong?”
This time, she wasn’t smiling.
There was no trace of playfulness in Kim Aran’s eyes.
Clear, direct, and penetrating.
She waited for his answer without blinking.
Mingyu had thought he was prepared, but when the moment came, the words wouldn’t come out.
It felt like they were stuck in his throat.
He simply lowered his head in silence.
Kim Aran watched him for a moment, then smiled faintly and continued.
“People tend to say less when they strongly agree with something.”
She lowered her head slightly and looked down at him quietly.
“There’s even psychology for that. ‘Silence as consent’ or ‘implicit agreement.’”
She rested a finger on her chin and smiled.
“So… I’ll take your silence as agreement. You’re admitting it, right?”
As she spoke, she lightly patted Mingyu’s shoulder a couple of times, as if praising him.
Then she smiled again, this time with a gentle, relaxed expression.
“Really. This is a compliment.”
“You’re different from those kids who just pretend to be ‘masters’ to get girls.”
“The ones who act tough just to have sex once, cosplaying dominance. I really hate those types.”
“Or the opposite—kids who kneel in front of women, calling them ‘Queen’ or ‘Master’ and begging to be touched.”
“They pretend to submit on the outside, but it’s obvious they’re just desperate for pussy on the inside.”
“You… feel different from those.”
“Like you actually have real emotions toward domination itself, and find meaning in that flow.”
She looked at Mingyu quietly, then moved a little closer and gently stroked his hair.
Soft and tender, like she was praising a younger student.
Under her touch, Mingyu felt an odd sensation.
Like his tension was easing, yet at the same time he was being pulled deeper into something.
She spoke quietly.
“What kind of person do you think your teacher is? Or rather, what’s her inclination? That might be more accurate.”
At Aran’s question, Mingyu slightly turned his head.
He knew, of course.
Kim Aran’s gaze, her tone, every casual gesture she made was filled with a dominant aura.
Femdom… probably.
The thought rose to the tip of his tongue, but Mingyu deliberately kept a blank expression and shook his head.
“I… don’t really know.”
At his answer, Aran’s lips curled into a small smile.
Then, as if asking a prince to kiss the back of her hand, she slowly extended her slender hand in front of him.
Graceful and restrained, the back of her hand facing up.
“Now, kiss it.”
“…What?”
“Mmm—Isn’t quietly keeping your mouth shut without pressuring you already worthy of a reward~?”
With a playful twinkle in her eyes, she gestured toward the back of her hand with her chin.
“Come on, Mingyu. Give it a nice kiss.”
Mingyu was momentarily confused, but he decided it was better to play along for both Jiwon’s sake and his own.
He awkwardly lowered his head and carefully pressed his lips to the back of her hand.
“Smooch.”
The moment his lips touched her smooth, thin skin, Aran spoke again.
“That’s not all. Now… move a little higher.”
Mingyu shifted his gaze from the back of her hand to her forearm and carefully moved his lips.
Then once more.
“Smooch…”
She let out a small giggle and twitched her shoulder slightly before quickly composing herself.
“Higher.”
Aran twisted her arm slightly, naturally offering the softest, most sensitive inner part toward Mingyu.
Thin, tender flesh.
Mingyu hesitated for a moment, but soon pressed his lips there as well.
“Smoooch…”
The moment his lips touched with a moist sound, Aran’s eyes wavered slightly.
Finally, she slowly raised her arm.
Beneath her slim, toned arm line, her armpit was revealed right in front of Mingyu’s eyes.
It was pale and smooth.
Completely hairless and neatly groomed.
There was something shamelessly sensual about it, mixed with a bold confidence that overwhelmed.
Mingyu couldn’t look away.
Armpits can be this pale and pretty…
“Now, you should give your teacher a small but certain reward too… Kiss it.”
Her voice was low and soft, but it was clearly a command.
“…Uh, on the armpit… here…?”
Mingyu quickly lowered his gaze.
But he couldn’t tear his eyes away from that pale curve.
“Mingyu. I’m not a very patient person…”
Her voice was low and beast-like, almost growling.
Under the heavy pressure, Mingyu eventually slowly lowered his face and pressed his lips to her armpit.
“Smooch…”
The moment his lips touched, Aran’s body twitched slightly.
Her shoulders jerked, and her fingertips trembled.
She was biting her lip hard.
Even so, she spoke quietly.
“I said kiss, Mingyu. Normal kisses… use the tongue, don’t they?”
The end of her sentence was low and soft, but the meaning was clear: cross the line.
Mingyu closed his eyes for a moment, then slowly began licking the inside of her armpit with the tip of his tongue.
“Lick…”
With each moist sound and gentle movement of his tongue, Aran’s abdomen twitched ever so slightly.
She bit her lip as if swallowing a moan, and her chest visibly rose with every breath she took.
She didn’t let out a single moan, but that restrained reaction felt even more erotic.
Mingyu couldn’t pull his lips away as he gently, lewdly licked her armpit.
Her entire body was trembling down to her toes.
With her eyes closed, holding her breath, she finally exhaled all at once.
“Puhhaa…!”
She let out a long breath and lowered her arm.
She hugged it tightly against herself as if to hide her armpit, and her shoulders hunched slightly like a girl who couldn’t bear the ticklishness.
“Ugh… It’s so ticklish… But… I like it… really…”
She muttered to herself, then pressed her lips together for a moment before shyly turning her head and adding one more thing.
“Thank you… for the reward… It’s better than I thought… receiving a reward like this…”
She slowly turned and walked toward her desk.
Picking up a thin, switch-like object with both hands, she bent it lightly.
“Ting~ Ting~”
The light, ringing sound repeated.
Mingyu’s eyes widened.
Don’t tell me… she’s going to hit me with that…?
Just as quiet fear and tension began to rise, Kim Aran carefully placed the thin switch onto Mingyu’s hand.
Her fingertips brushed against him.
“This is… a gift.”
Aran smiled gently as she met his eyes.
“I thought you’d use it well. It’s called a ‘slapper whip.’ It makes quite a loud sound, but it doesn’t actually hurt as much as you’d think for the person receiving it. …It’s for roleplay.”
She narrowed her eyes and continued with a slight smile.
“Try starting with unni using this. And…”
She paused, observing Mingyu’s reaction for a moment, then lightly pressed the whip’s handle with her fingertip and muttered.
“Umm… Let’s interact more often too? I mean… I’m curious! Yeah.. I have a lot of curiosity!”
As soon as she finished speaking, Aran crossed her arms and turned slightly away.
“A-and don’t forget about swimming club activities!! New friends are coming too… S-so… you can go now… Hmph!”
Her voice was sharp, and her head was turned to the side, but a subtle smile was clearly spreading across her lips.
The atmosphere had lightened, but Mingyu couldn’t shake the feeling that he had been drawn even deeper into her web.
Mingyu looked down at the slapper whip in his hand, lost in complicated thoughts.
How the hell am I supposed to take this home… She could’ve at least wrapped it…
Feeling dazed, he left the swimming club room and, with no other choice, tucked it into his pants along one leg, securing it under his underwear band.
She seems to be misunderstanding something big… And what’s this about new friends…??
With those thoughts running through his head, he limped away like a clumsy pirate captain, heading home.