Homeroom Teacher Seong Mi-na's Worries
"Is this that breast pump...?" I stared at the device in my hand, which looked like a miniature oxygen mask. The opening flared out like a trumpet, with a small bottle attached underneath to collect any leaking milk. A hand-operated pressure mechanism sat on the side.
"Let's see... If I press this against my chest and squeeze..."
I pushed the tip of my breast snugly into the pump and gradually increased the pressure. Through the transparent trumpet, I watched my nipple swell outward in a lewd, protruding shape. After holding it for a moment, I pulled the device away and examined the result.
It wasn't as dramatic as I'd hoped—just a little swollen—but the nerves already sensitized by massage now felt concentrated at the tips. If I kept at it, I might get used to the sensation.
A stronger wave of anticipated victory surged through me. I thrust both hands into the air and shouted.
"Just you wait, Han Soo-hee...!"
"Hngh, ah, haak, haaaang...♡"
"...Lee Seon-ah. Your exams are in a few days. Don't you need to study?"
"Shut up...♡ I-I haven't lost yet, you knooow♡"
"...."
I kept my mouth shut, gazing down at the brown-haired girl panting helplessly in my arms... making sounds that held zero persuasive power. I shifted my fingers from gently stroking her areola and gave her nipple a light pinch.
Immediately—
"Hnguuuuuk...♡"
Lee Seon-ah arched her hips high into the air, trembling with terrifying intensity. I pulled the writhing girl firmly against me, pinning her in place, then lightly scraped the tip of her plump, swollen nipple with my fingernail while checking the timer.
"H-Han Soo-hee, d-don't use thaaat♡ Stop... th-that, haaaang♡"
Two minutes and thirty seconds. When the bet first began, she could barely hold out until the five-minute mark before climaxing. Yet with each passing day her endurance grew shorter, until it reached this pathetic state.
Well, it made toying with her even easier, so I had no complaints.
"Hek, hek, heeek...."
After finishing today's bet—framed as nothing more than another session of tormenting Lee Seon-ah's breasts—I handed the gasping girl a fresh pair of panties while she lay sprawled across the sofa.
"...It's fine. I don't need them."
"After soaking your panties like that... you're seriously going to class without changing?"
"No, that's not what I meant...."
Her voice trailed off as she rummaged through her skirt pocket. A moment later, a tightly rolled bundle of white fabric emerged.
"I brought a spare. Panties."
"...."
Are you even trying to win the bet?
Whether I watched or not, she lifted her skirt, peeled off the drenched panties, slipped into the fresh pair, and left the music preparation room. The way she sauntered down the hallway with her hips swaying suggested she was in an even better mood than when she'd arrived to see me.
I thought I was the one using her... so why does it feel like I'm the one being used?
I shook my head and picked up the phone on the table.
Lunchtime was almost over. I needed to masturbate soon. The thought of pleasuring myself with the hand that had just been mauling Lee Seon-ah's breasts while replaying her moans made my pulse quicken. Feeling my pussy grow slick and throb inside my pantyhose, I rose to lock the music preparation room door—only for a sudden knock to echo through the room.
Who could it be this time? Did Lee Seon-ah forget something...?
"Han Soo-hee, are you in?"
A calm, unfamiliar woman's voice.
"...Yes, I'm here."
"I have something I'd like to discuss. May I come in for a moment?"
The woman who slipped inside had straight black hair that fell to her waist and an impressive chest that strained against her blouse, contrasting sharply with her narrow waist. She'd buttoned her shirt all the way up in an almost suffocating manner, as if trying to hide the sensuality radiating from her body. Yet the buttons screamed in protest across her bust, making it clear the effort was futile.
"Please, have a seat. Would you like some coffee?"
"Ah, no thank you. I already had some... Is it all right if I sit here?"
She gave an awkward smile and settled onto the sofa across from me.
"I'm late with introductions. I'm Seong Mi-na, Lee Seon-ah's homeroom teacher."
"I'm Han Soo-hee, temporarily in charge of first-year music classes."
She bowed politely first, so I returned a light nod.
Seong Mi-na... Isn't she the one they call the passionate teacher? I vaguely remembered hearing about her from a male teacher who had once tried to flirt with me.
After the greetings, silence settled between us again.
"So... what brings you to see me?"
"Well, it's... I heard a rumor that you're quite close with Seon-ah, Teacher Han."
"...Me?"
If being close to Lee Seon-ah counted for anything, practically the entire world could claim friendship with her.
"Yes. They say she visits you often during lunch..."
"And does that have anything to do with why you've come to see me, Teacher Seong?"
"...I'd like to ask you something about Seon-ah."
"...?"
"How has Seon-ah seemed to you lately?"
"......I'm not sure I understand what you mean."
Seong Mi-na fidgeted with her hands for a long moment before finally biting her lip and continuing.
"Please keep everything I'm about to tell you strictly confidential. Since you're close with Seon-ah, I trust you'll do that for me."
Still hesitating, she began her story with obvious difficulty.
That day, Seong Mi-na had walked toward the classroom with a bright smile, excited to see her adorable students. Having both the top and second-ranked students in her class filled her with happiness. Recalling the jealous glances from the other homeroom teachers in the staff room, she reached the classroom door.
As she approached to open it, she noticed unusual noise coming from inside. The frosted windows prevented her from seeing in, so she tried to crack the front door open for a peek—only to find it locked from within. It rattled but wouldn't budge.
Suspicious now, Seong Mi-na retrieved the spare key from the staff room and quietly unlocked the door.
What she saw inside was her beloved top student, Lee Seon-ah, sitting on the lap of the second-ranked student, Cha Eun-jung... getting her pussy thoroughly fingered.
And despite it happening in the middle of the classroom, the other students weren't stopping them. Instead, they had gathered around to watch.
At first she'd thought it might be some new form of bullying and considered intervening—but then...
"...? Please continue."
"Haa..." Seong Mi-na gulped down the water I offered, then continued in a trembling voice. "Seon-ah had the most blissful expression on her face. As a woman, I felt genuinely jealous... She looked like she was drowning in pleasure and happiness. No—what am I even saying about my own student... Please forget what I just said!"
Seong Mi-na covered her bright red face with both hands and shook her head vigorously.
"A-anyway... Seon-ah wasn't that kind of girl before. After vacation ended, she started wearing a shortened uniform. I told myself it was just stress relief from studying... But this recent behavior..."
She trailed off, clutching the cup tightly with both hands.
"Teacher Han, do you have any idea why Seon-ah might have changed like this?"
"Hmm... Since I never knew the 'old' Lee Seon-ah you're referring to, I can't offer much insight. However..."
"However...?"
I looked at Seong Mi-na, whose eyes were fixed on me with trembling intensity, and spoke.
"I believe that might simply be her true nature."
"Her true nature? That can't be!"
Seong Mi-na slammed the cup onto the table, her earlier hesitation gone as she raised her voice.
"Seon-ah has always been incredibly upright, dependable, handsome, trustworthy—someone you just want to lean on!"
Does she even realize what she's saying?
Seeing her still fuming, I tried a different approach.
"Then why not try disciplining her?"
"Disciplining... her?"
"Although I'm only a temporary teacher, I do know one thing. A teacher must guide their students onto the right path."
"Ah..."
Seong Mi-na's eyes widened, then sparkled as she stared at me, all trace of anger vanished.
"Teacher Han... From the very beginning, I thought you were someone truly reliable!"
She leaned across the table, grabbed my hand tightly, and gazed at me with burning eyes.
That look was... a bit much.
"Anyway, I've just remembered something urgent! Thank you so much!"
She bowed deeply and dashed out before I could even respond. I stared blankly at the closed door for a moment, then turned my phone back on and sent another report to Cha Eun-jung.
"Eun-jung, how do you solve this one?"
"Hm? Didn't I explain that in class a few days ago?"
"Well... I can't quite remember."
"Then watch closely. The formula for solving this is..."
Fifth period had just ended and break time had begun. I had brought my textbook to Cha Eun-jung to ask about a problem I didn't understand. She gave me a look that said why don't you remember this? which made my face flush with embarrassment.
But these past few days I'd been busy with intense breast training at home... and five minutes of climaxing a day simply wasn't enough anymore....
I let out a heated sigh and watched her white fingers move gracefully as she held the pen. It would feel so good if those fingers were inside my pussy instead. Sliding along my slick inner walls coated with arousal, the slender digits curling slightly to tap against that sensitive spot—
"...."
"?"
I had been staring blankly at her fingers when I realized she had stopped explaining. I quickly lifted my head.
The girl who had been teaching me had paused her writing. One hand now held her phone, eyes fixed on the screen.
What was it? A message?
"Eun-jung, what are you looking at?"
"Ah, it's nothing. Really."
She glanced at me, brushed it off as nothing, and slipped the phone away. Then, as I sat there blinking, she made a suggestion.
"Hey, Seon-ah. Since midterms start right after this weekend, how about we have a study camp together?"
"A... study camp?"
Like something out of a manga... Or maybe it was common in this world? Either way, since I had many things I wanted to ask Eun-jung, it was actually a welcome proposal I might have made myself.
"Sure, sounds good. Oh, right... Won't your parents be home?"
"My parents? They don't mind. We'll meet at my villa officetel."
A villa... officetel? I really should have been born into that family.
Perhaps sensing my envious gaze, Eun-jung smiled softly and pulled me into a tight hug around my waist.
"Don't worry. Half of it will be yours anyway."
She planted a light kiss on my cheek.
Half of it will be mine? What does that even mean? Since we're friends, maybe she just means I can treat the place like my own during the study camp?
I touched the spot she'd kissed and stared blankly at Eun-jung, who was now smiling brightly as she typed a message to Kim Han-na.