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“Ah... Ngh... Haa...uuu...”

Sultry moans kept slipping out of Amelia’s mouth as she furrowed her brows.

It was due to Siwoo’s cock kept tapping against her G-spot, again and again.

With her legs spread wide on the table, the missionary position she assumed put everything on display; her tight hole swallowing his thick cock down to the base, not a single detail hidden.

“Jani...tor...! That spot! Make sure...you remember that part...well...!”

Even as she choked back her moans, letting out strained little whimpers, she kept her tone as composed as possible.

But her face was completely different from before.

Her lips twitched, as if they might melt any second if she let her guard down, while her eyes burned with determination to hold back the messy, unraveling expression threatening to take over.

-Squelch! Squelch!

“You mean this spot?”

“Hngg...! Yes...! Right there...! T-That’s one of the spots...that will make me come easier...!”

The swollen ridge and dip inside her pussy walls.

Even without that, after receiving passionate caresses from Siwoo, her defenses were weakened enough.

When he pressed her G-spot with his cock, she gasped, cupping her own hands over her breasts.

And yet she kept on narrating through it all, utilizing her sheer willpower.

-Schlick, schlick, schlick

“If you keep...rubbing...that bumpy...spot...! Hard like that...! Haah...! My head...goes blank...! My breathing...gets shallow...! And...! And...! Haaah...!”

In truth, to really focus on Associate Professor Amelia’s brilliant lecture, Siwoo had to ease up on his thrusting.

If he went too hard, her whole body would tremble so much that her voice would turn into a garbled mess, making it impossible to understand her.

So, he subjected her to 10 whole minutes of slow, focused G-spot stimulation.

And that extreme focused attack, where she taught him the location in detail, was enough to make her cum.

“Hnnnggggh...!”

Her body jolted violently, her head slamming against the podium with a loud thud.

Her back arched like a drawn bow, and her pussy, clamped tight around the base of his cock, pulsed and spasmed in rapid waves.

“Hng... Hnngh... Hgh...!”

No matter how much she tried to maintain her cool professor persona, there was no way to keep it up while she was in the middle of climaxing.

She squeezed her eyes shut, clamped both hands over her mouth, and trembled like she’d been hit by a bolt of electricity.

“Haa... If you keep... Rubbing the head of your cock like that...! M-My body moves on its own...! And my pussy clenches...! Helping you cum... And I... I feel the orgasm...”

She finished her explanation with ragged breaths.

The way she looked was utterly adorable.

So much so that any lingering resentment Siwoo had toward her vanished completely.

“What next?”

“Haah, next... Next is... Every time I cum... It gets more sensitive inside... Even the slightest move brings...! Stronger pleasure...! Haah...!”

“Like this?”

Her hole, still tight from just climaxing, squeezed even more.

The moment he struck the exact same spot again, Amelia’s voice cracked with a sharp cry.

“J-Janitor...! Don’t move on your own...! During my explanation...! Ah... Aah... Haah...!”

Her legs, flailing in the air, instinctively wrapped around Siwoo’s waist.

Since she did that in the middle of penetration, it naturally made him go deeper.

With her insides sucking his dick in like a vacuum, he couldn’t help but sink even further.

Her tight hole devoured his huge cock without a hitch.

She clung to him, panting desperately like she was holding on for dear life.

“Does it feel good here too?”

“...Do you think I’m doing this lesson for my own pleasure...?”

“You seem to enjoy it for someone who isn’t.”

“...That spot is... Another one of my weak points...”

“You mean here?”

“Haah...!”

Amelia clung to Siwoo even tighter, breathing sweet little gasps right into his ear.

The pleasure she felt had reached its limit to the point that she broke her character.

Even the old Amelia probably would’ve reacted the same way.

-Squeeze, squeeze

“Where’s this spot?”

“Ah... Aah... Haah...”

He shoved in deep until her cute little clit rubbed against his lower belly and rolled his hips slow and steady, Amelia quivered like a drenched little bird.

“The deepest place...you can go to...Janitor...! Ah...ah...!”

“How does it feel here?”

“It feels so...full... My stomach feels like it’s getting crushed... My vision is turning blurry....”

The pair exchanged filthy whispers as they devoured each other even more.

“From here...! I-I’ll leave it to you, Janitor...! I’ll be grading you from now on...! Use what you have learned...! Make me feel good...! Ngh—!”

“Understood.”

“Today’s lesson... Is about finding my weak spots...! Every time I orgasm...! You get bonus points...!”

After that, it went exactly as expected.

His second hot night with Amelia continued.

Everyone had different sensitive spots.

But thanks to this lesson, Siwoo managed to pick up on her weak points so quickly that he could probably draw a map of them.

Having his partner give him a pinpoint-accurate feedback compared to figuring things out himself by checking on his partner reaction helped him by a lot,

He never expected that a class of sex ed would be so useful during an actual sex.

-Thrust, thrust, thrust, thrust!

“Ngh... Haah... Ugh...!”

“Ms. Amelia, aren’t you going to grade me?”

“W-Wait... Haah... I’m...doing it...! Ngh... I’m gonna...cum again...! Ugh...! Haaah...!”

No matter how much Amelia tried to stay in her ‘associate professor mode,’ there was no way she could fully withstand Siwoo’s experienced technique.

She was completely at the mercy of the overwhelming pleasure and relentless orgasms that he gave her.

At this point, she had already lost track of the little climaxes and hit six massive ones that left her mind blank

The desk was a soaking mess with her pussy juice, and her crotch oozed a frothy mix of cum and slick, spilling everywhere over the podium.

He had already shot thick loads of cum inside her three times.

And now, he was going for a fourth.

-Spurt! Spurt! Spurt!

“Ms. Associate Professor, I’m going to cum again.”

“Ngh...! Haah... Janitor...! Again...! Inside...! If you keep...doing that...! Hngh...!”

Again, Siwoo pushed his cock against her cervix, flooding her insides with another thick load of his baby batter.

Her pussy walls latched onto his dick, sucking up every drop, while her nails clawed at his broad back as she held on.

“Haaaahhh...! Aaaahhh...!”

She came again, perfectly timed with his creampie.

But Siwoo didn’t stop moving, even mid-spurt.

Amelia’s mind was about to blank out from the insane pleasure, but the non-stop pounding snapped her back to reality.

“So, what’s my grade now?”

“10 points... 10 more... added... ah... ah...”

She didn’t even realize that her grading that started at 100 had already shot past 1,000.

Regardless, the late-night classroom sex continued until dawn, only stopping when Amelia finally passed out, too much of a mess to keep grading.

2.

Later, Siwoo surveyed the mess they had made, his back stinging from Amelia’s scratches.

“Ah... fuck, am I a goddamn idiot...?”

After he caught Amelia’s scent in the Malkuth Gallery...

His memory just turned fuzzy.

It was like in a movie when the main character got drunk and the scene was cut, he couldn’t recall anything.

That was how strong the effect of the Perfume of Seduction was.

He vividly remembered his cringeworthy requests for Amelia to grade him and to act as an associate professor. And the sight in front of him validated those memories.

Amelia, sprawled out on the desk.

“...”

Her pussy, red and swollen, still leaking thick cum, while her pale skin was marked all over with hickeys and bite marks.

She still looked insanely hot even now, but the memory of his own desperate behavior was like a bucket of ice water.

What the fuck did I do?

For Amelia, this was only their second time having sex.

Even if she’d been the one to seduce him first, demanding such shameful stuff over and over was too much.

He couldn’t even bear to face her now.

“Ms. Amelia...”

“Ngh...!”

Siwoo gently lifted her sweat-soaked body and roused her softly.

She had cried her eyes out from cumming so hard, and they were bloodshot as she flinched awake in surprise.

“Are you okay?”

“...Ah.”

Amelia glanced around with wide eyes. Her mind slowly pieced everything back together.

-Snap!

With a snap of her fingers, the lecture hall turned clean again.

The tables, which had been drenched in all kinds of bodily fluids, now were spotless, while their bodies looked as if they’d just stepped out of a shower.

Then, the two of them hurried out of the lecture hall, their steps a little awkward.

After spending hours in a room thick with the smell of sex, the crisp outdoor air felt like it cleansed their lungs.

Maybe she was embarrassed now that she had sobered up considerably, or maybe she was only now realizing how far Siwoo had pushed things, but...

Amelia didn’t say a word.

She didn’t even hold his hand.

“Ms. Amelia, I’m sorry. I think I...lost my mind back there...”

“...”

“I’ll keep it together next time. I won’t make you do weird stuff like this again.”

So, he apologized first, keeping it simple and honest.

All that talk about closing the gap, conquering the old her, or whatever.

Even if he used those various reasons, it was still a distorted demand that stemmed from his twisted desires.

Not only that. Maybe, just maybe, what he’d done had dug up some guilt Amelia had been trying to bury.

“...”

At that moment, Amelia, who’d been walking ahead, stopped dead in her tracks.

“Janitor.”

She turned to face him, her voice cold and distant.

Siwoo’s eyes widened.

Thinking that the reckless roleplay had indeed brought back painful memories.

But what came out of her mouth was the continuation of her act.

“You did well in today’s lesson. Not enough to be satisfying, but good enough. Turns out even you have something you’re good at.”

With a performance that was far more polished than before, she stared at Siwoo.

Her stern, tight-lipped expression softened into a gentle curve.

With that playful grin, she hooked her arm around his and rested her head lightly.

Sure, their plan to anal sex had only gotten as far as a try, but she’d seen Siwoo lose his mind with horniness and figured out what he was into.

Not only that, she also felt like she’d found a way to make up for past mistakes she thought were unfixable.

They still had a long way to go, but...

This was good enough for today.

They started walking in sync.

As Siwoo was still embarrassed by how he had gotten carried away by his lust, Amelia, now a little giddy, was busy teasing him.

“You really got turned on by this dumb stuff, hm, Janitor? Pervert.”

“Uh, yeah... I guess.”

“I’ll spoil you with it every now and then. So be grateful.”

“You really don’t have to...”

“Do you think a mere janitor like you has the right to tell me, Amelia Marigold, what to do?”

“I didn’t mean it like that...”

“No, I can’t just let it slide. You need to be punished. Kiss me. Now.”

On the snow-covered hill at Trinity Academy.

To be exact, on the footprints they left behind, there was a layer of lighthearted, teasing banter piled right on top.