The Professor's Secret Lecture
"My pussy says it's starving to death."
[Seoa's Perspective]
'Uh...?'
Thump.
My heart sank into my stomach.
Eating at the cafeteria. Alone.
"A-alright!! I get it, okay!!"
I clung to him desperately.
The cafeteria was a no-go.
It was a packed, chaotic mess of a dining hall. Who knew what kind of horny vixen might try to shove her ass right next to my man?
"Fine! Let's order in! What should we get? Hmm?"
"Just order some jajangmyeon or something."
I eventually raised the white flag.
My plan to monopolize him for the entire lunch hour over an expensive meal had been crushed.
But I couldn't just back down completely. I needed a card to play to at least achieve some of my goals.
"Instead!"
I shouted, my eyes burning with intensity.
"A tangsuyuk set! No, let's get a kanpunggi set!"
"Kanpunggi?"
"Yeah! It's more expensive than tangsuyuk! And it has to be a large! No, if there's an extra-large, get the extra-large!!"
I wouldn't be satisfied unless I forced some luxury into this pathetic jajangmyeon lunch.
"No... why would two people... we'll have so much left over."
Seojun muttered, looking bewildered.
"If there's leftovers, damn it! We can just pack it up and take it home!"
"Who takes kanpunggi home? It'll all get soggy. And it's getting hot out, what if it spoils?"
"I don't care! Just order it!"
I bickered and nagged.
Eventually.
"Haa... fine. Large kanpunggi."
"If there's an extra-large, get the extra-large!"
"Yeah, yeah. Let's get the extra-large."
Seojun pouted and surrendered.
'Hehe.'
I won.
I finally got him to spend the money. A thrilling sense of victory washed over me.
I crossed my legs again.
I didn't forget to shift my posture to subtly show off my pussy.
Gurgle...
Squish. Squish!!
Splurt!
"Ugh..."
As if responding to my victory, my pussy spewed out a fresh wave of fluids.
"Ah, seriously, stop leaking!"
Right toward our brother's face.
[Seojun's Perspective]
30 minutes later.
Rustle.
On the table in front of the sofa.
I’d laid out newspaper. The bowls were spread out.
"Ah, I'm starving."
My sister picked up her chopsticks and smacked her lips.
Swish. Scrape.
I picked up my chopsticks, too.
I mixed the jajangmyeon in front of me thoroughly.
Swish.
I slid the bowl toward my sister.
"Huh?"
"Eat."
Instead, I pulled the unmixed bowl toward myself.
"Eat quickly. It's going to get soggy."
I said it indifferently.
I started mixing the new bowl as if nothing was wrong.
But then.
"......"
Silence.
It was strangely quiet.
I looked up.
[Seoa's Perspective]
'What do I do, seriously...'
My nose stung.
How could he be so sweet?
My little brother.
Slurp! Slurrrrp!
"Haa......"
My pussy twitched with pleasure.
My womb, moved by my brother's consideration, cheered, leaking fluids everywhere.
This kindness belongs only to me.
"Heh, hehe......"
Ah, that strange laugh leaked out again.
"Seriously, why do you keep laughing like that?"
"J-just because!"
I poked my tongue out.
"The jajangmyeon looks so delicious!"
Slurrrp!
I sucked up the noodles with gusto.
Lobster? Sushi?
Throw that trash in the bin.
The jajangmyeon my brother mixed for me is a thousand times tastier.

"Mmm... so yummy."
I chewed, my lips twitching.
Black bean sauce glistened around my mouth.
Swish.
My brother's hand.
He’d pulled out a wet wipe before I even noticed.
"You're such a mess, getting it all over yourself."
His voice was grumpy, but he wiped my mouth gently.
"......!"
What he was holding.
A baby wipe he’d specifically pulled out for me.
The satisfaction of being treated like a woman.
Kwahhh!
Squish! Squeeeak!
Splurrrrt!
"Hut...! Ughhh...!"
My pussy chewed at the empty air.
It felt too good.
'I'm going crazy, seriously.'
A space just for the two of us.
The newspaper on the table.
Jajangmyeon and kanpunggi.
And my kind, sweet man.
Delusions bloomed.
We're just like...
'A newlywed couple.'
A day in the life of a newlywed couple, looking at a new house and ordering delivery food.
Ah.
I'm so happy.
The sense of fulfillment melted my brain.
Bubble.......
Splurt.......
The overflowing foam soaked the sofa leather.
It dripped down to the floor.
"You're leaking again while you're eating."
Seojun grumbled.
He wiped the foam away with a wet wipe.
I adjusted my grip on my chopsticks.
I reached for the kanpunggi plate.
The most delicious-looking piece.
Swish.
I thrust it toward my brother's mouth.
"Huh? I'll just eat it myself. Don't be like that."
Seojun flinched and pulled his head back.

"Shh. Open up."
I pouted my lips.
I kept pushing the chopsticks toward him.
Eventually, he opened his mouth wide.
Pop.
I fed him the kanpunggi.
Munch, munch.
He puffed out his cheeks.
He eats so well.
My little brother.
My husband.
My man.
My male.
I rested my chin on my hand and smiled with my eyes.
I watched him chew in a state of ecstasy.
Suddenly.
"Eat plenty."
"Mmm. Why?"
He asked, his cheeks stuffed to bursting.
"Hehe."
The corners of my mouth trembled.
I crossed my legs differently.
I spread my sore pussy wide open.
Squeak......!
Slurrrp......!
The sound of it being chewed wetly.
"Eat plenty and..."
I continued in a low voice.
"You have to refill me with your cum."
[Seojun's Perspective]
"Cough! Ack! Ack!"
I choked on my food.
I pounded my chest and glared at her.
"Again?!"
I shouted in horror.
"Damn it, you poured enough out this morning! What are you talking about while we're eating!"
"It all drained out earlier."
My sister replied nonchalantly.
She licked her lips with her tongue.
"My pussy says it's starving to death."
She’s a total nymphomaniac.
"No! You're the one who pulled the plug out, so why are you taking it out on me!"
I shouted back, feeling wronged.
Sure, it was my fault for sniffing her cardigan without thinking, but she was the one who pulled it out herself, so why is she blaming me!
"I don't know, I don't know~."
My sister hummed a tune.
She winked at me while chewing on a pickled radish.
"If you want to see me have a seizure and leak all over the place during my lecture..."
Crunch.
"You don't have to do it."
Blackmail.
Gaslighting.
"Haaaa......"
A sigh escaped me.
Yeah.
How could I ever win?
Against my sister.
I just gulped down my cola.
"Fine. Just please be quiet until I finish eating. I'm going to get indigestion."
My sister's reaction.
"Hehehe, uhihit!"
"Why do you keep laughing like that, it's scary......"
That strange laugh again.
Squeak... Splurt!
Under the table.
The sound of obscene bubbles still boiling over.
Still, though.
"It's tasty."
The kanpunggi.
[Seojun's Perspective]
A few days later.
Morning.
Bubble bubble bubble.
The sound of stew boiling.
Tap tap tap tap.
The sound of tofu being sliced on the cutting board.
And behind me.
"Ah, hurry up and plug it in already......"
A whining voice.
The dining chair.
Our sister, Professor Yoon Seoa, sitting there.
Her posture was a sight to behold.
Her bottom half was completely bare.
She was perched on the edge of the chair.
With both legs spread wide open.

Squeak... Bubble bubble!
Between her legs.
Her vaginal opening was swollen and sore.
Whitish mucus was boiling over without a break.
The object in her hand.
A transparent, blunt lump of silicone.
A plug.
A pussy stopper.
"Seriously, you're not a child, why can't you wait a little?"
I grumbled and turned down the gas.
"Wait a second! Go wash your hands. If you put it in like that, my pussy will smell like garlic."
"Yes, yes."
Our professor sure has a lot of demands.
I washed my hands roughly with dish soap.
"Applying the gel now."
I picked up the lubricant.
"No! Why are you applying that!"
She flapped her legs and threw a tantrum.
Splurt!
She even shot a water gun from her pussy toward my face.
She's so damn noisy, top and bottom.
"I've already leaked twice since this morning! It's super slippery right now! Why are you applying that and diluting my cum!"
"Do you even think about how my back is breaking because of that?"
I wiped my face roughly with a tissue.
"What are you going to do if the inside gets all raw? I'm the one who has to clean up the mess."
I was dumbfounded.
"Can't you see it's swollen? You squeezed it out like that yesterday, so of course it's going to hurt if you put it in raw!"
It was all for her own good.
"It doesn't hurt at all! My pussy is at its best when it's filled with my brother's cum!"
As expected, she didn't listen to a word I said.
"Hurry up and put it in and put my panties on. I'm going to be late for work!"
She shrieked.
Bickering from the morning.
If we lived in an apartment, we would have been ostracized by now.
"Haa......"
Well, what can I do?
I can't win anyway.
I put the gel down.
Sighing deeply, I took my place between her spread thighs.
"Tell me if it hurts."
Swish.
Slurrrp!
"Haaang......!"
Her bright pink hole was pulsing.
I aligned the tip with the entrance and pushed it in gently.
Just as she said, lubricant wasn't needed.
She was already soaked.
Pop! Squeak!
The plug burrowed in slippery-like.
"Ughhh... so good......"
She twisted her pelvis, writhing.
Her eyes were hazy, as if she were melting.
"Don't you have hands or feet? Put it in yourself."
I grumbled and pulled out a wet wipe.
I meticulously wiped away the mucus that had leaked out.
Gotta do what I gotta do.
"Whyyy. Does our Seojun not like his sister's pussy anymore......?"
Teary-eyed.
Here we go again.
Fake tears she squeezes out at the drop of a hat.
"What brother likes his sister's pussy from the start?"
Anyone listening would think we'd been like this since we were kids.
"Hwaaang...! My brother says he hates me......!"
She started wailing theatrically.
"No, when did I say I hated you! You're going to ruin all your makeup, seriously!"
"If it ruins, you'll just make me do it again!"
Lately, I even have to help with her makeup.
Spray the mist, match the tone around her nose.
Every morning, I'm plagued by demands I don't even understand.
I don't have enough hands to keep up.
And it's a given that I get dragged along at lunch under the excuse of makeup.
"Hehehe. Then put my panties on nicely."
Squish. Splurt.
The sound of her mouth laughing strangely.
The sound of her pussy crying happily.
Her womb was heated up and pulsing.
I picked up her tight panties.
I pulled them up gently from her white ankles.
I covered the base of the plug firmly and pressed it down.
"Done. Eat."
"Yes, my dear husband-!"
"Who's your husband? I'm your brother."
"Hwaaang... Seojun says he hates me......!"
"Ah, fine, you're my husband! Let's just eat!"
"Hehee."
A pleasant snort.
She was so excited. So excited.
I'm exhausted from the morning.
Well.
It's not like I hate it.
[Seoa's Perspective]
11:00 AM.
Lecture hall.
"Now, everyone, open your textbooks to page 142."
A calm and intellectual voice.
To anyone, I’m just Professor Yoon Seoa as usual.
'Idiots.'
I scanned the students while walking across the podium.
Especially the male students.
Their sticky gazes as they stole glances at me.
Lust disguised as admiration.
'No matter how much you imagine my pussy...'
A sense of superiority made the hair on my body stand on end.
Click. Click.
Every time I took a step.
Squish! Splosh!
My lower abdomen shook heavily.
Squeak... Splurrrrt!
The magma of my brother's cum, pooled to the point of bursting inside my belly.
It slapped against the sealed walls of my womb.
'Only my brother can fuck my pussy.'
My infertile womb can only hold my brother's seeds.
I was so proud of that, I couldn't stand it.
'Hehe.'
Where my gaze landed.
First row, on the right.
The seat closest to the podium.
That place.
The face looking up at me with boredom, chin resting on his hand.
Our Seojun.
'Hehehe......'
I’d told him when we left the house this morning.
"Noona, can't I sit in the back?"
"No! You have to sit right in front of the podium!"
"I see you all day at home! Can't we sit apart at least during class! My stomach is going to get a hole in it!"
"What if I have a seizure while lecturing? What if I get anxious! You have to be right in front of me so my pussy can calm down!"
"Ah, seriously......"
"Do you want me to have a seizure during my lecture and get posted on the internet? I'll kill myself if that happens! Is it okay if I kill myself? Hmm?"
How could he ever win against me?
My sweet, sweet little brother.
In the end, he sat quietly in the front row.
His mouth pouted.
His brow furrowed in annoyance.
Oh, he's so cute I could die.
Splurt! Slurrrrp!
"Hut......!"
Vibration.
Just by making eye contact.
My pussy contracted by automatic reflex.
It chewed on the silicone plug.
It spat out a wave of mucus.
The sensation of my crotch getting warm and wet.
'I'm so happy.'
I couldn't hold it anymore.
Swish.
I turned my body.
I put the chalk to the blackboard.
Tap. Tap-tap-tap. Tap.
I wrote down the theory calmly.
At the same time, I secretly wove a spell in my mind.
'High-level Cognitive Inhibition.'
'And Illusion Projection.'
Incantation-less deployment.
Someone who could cast a spell of this difficulty solely in their mind.
There were only five such people in the entire history of the Republic of Arcadia Federation.
A high-difficulty technique worthy of the title of Archmage.
And now, I’m using that magic.
For a filthy purpose.
Target.
Our brother in front of the podium.
Swooooosh-
The magic was complete.
A secret tunnel connecting my vision to my brother's.
To the students' eyes, it was just another day.
Professor Yoon Seoa conducting her lecture.
But.
In my brother's eyes.
He would see the 'real, horny Yoon Seoa.'