The First Test on Assistant Teacher Kim Hye-yeong
Is this shit really going to work? I still can't believe it.
I steadied my trembling hands as best I could and decided to run a test right away. Since I wanted immediate confirmation, the target had to be the person right in front of me.
The target was our class's assistant teacher, Kim Hye-yeong.
Scratch. Scratch.
It had been so long since I'd drawn with this level of focus that I was actually sweating. My still-shaking hands were proof enough that this was all real.
I sketched her sitting crookedly in a chair, messing around on her phone. Bored expression, scrolling through shorts. I even made her cross her legs in a slightly unusual way so I could double-check whether this was actually going to happen. Just to be safe—no accidental overlap.
The time was 9:12.
I ignored my pounding heart, pretended to stay calm, and the moment I set my pencil down—
Kim Hye-yeong moved exactly as if possessed. She sat in the chair and crossed her legs in the precise pose I'd drawn. Her eyes weren't glazed over and she didn't look out of it. She genuinely looked like she was just killing time on her phone.
Does she still have free will…? What the hell is this?
Just watching the test unfold was already insanely hot. Those big eyes, pale skin, perfectly straight nose. Her face had that elegant, high-class beauty that made you believe she could’ve been a model even if she wasn’t quite celebrity level.
Just wait a little longer… I’m going to fuck you so filthy and raw… heung…
And the way those long legs in tight skinny jeans were crossed? It looked so fuckable it was like I was staring at bare thighs.
It’s already getting heavy… Fuck. The effect ends at ten, right? Why is time moving so damn slow?
At 9:22 she stood up like nothing had happened and went back to guiding the students.
Exactly ten minutes. It matched perfectly.
Could I really pound her senseless in that exact window?
I decided to wait until the end of the day. It was the first day, so I needed to see how class actually wrapped up.
I handed her the drawing I’d done—the one I was about to turn into reality—and stared at her face the entire time. I had to memorize every detail so I could recreate it perfectly later.
“Wow, you worked so hard. It couldn’t have been easy, right? First days are always the toughest~”
The way she looked at me with those seductive eyes while using that sweet, babying tone made me want to commit every sin imaginable right then and there.
“Yeah… it was pretty rough. Should I start cleaning now?”
“Yes, the broom’s over there.”
That kind smile of hers was driving me even more insane.
I’ll pretend to clean while I watch the situation carefully. There’s no way I’m leaving today without using this sketchbook.
“Could you turn off the switch in the very back corner?”
Kim Hye-yeong asked me after I’d deliberately lingered with the broom until every last student had left. The classroom was now empty. Just the two of us. Once the lights were off, the only illumination would be the faint glow from the hallway. It would be completely dark.
But there was one thing I had to do first.
I pulled out the sketch I’d secretly drawn earlier from my pocket. The pose had her upper body leaning on a desk, ass perfectly positioned to get railed from behind. Before killing the lights, I added the final stroke with my pencil.
10:15.
“Uh… what’s happening? Why is my body—ah… heung…”
She assumed the exact position I’d drawn, resisting the invisible force with these little twitches that made my blood boil with excitement.
It’s… it’s actually working! It’s happening exactly like I drew!
A teacher—someone with actual authority—forced into this obscene pose in front of a guy she’d barely met. The humiliation must have been crushing. Her face flushed bright red in seconds.
“Ah… ah… wait, please don’t stare… my body… something’s wrong with my body…”
I walked toward her slowly. Kim Hye-yeong looked up at me with eyes full of fear and unwilling arousal. Her breathing had turned ragged and desperate.
Because that’s exactly how I’d drawn her.
I wanted to bury myself inside her immediately, but I also wanted to savor this moment just a little longer.
“Why? You look so fucking sexy right now. Don’t you want to get pounded like a slut?”
“What are you—?! Ah… ah… heuk…”
Her words trailed off as her expression and body reached the absolute peak of forced arousal. I grabbed her defenseless, bent-over ass with both hands. No matter how the sketchbook worked, I couldn’t hold back anymore.
“Heuk…”
A short, sweet moan echoed quietly through the dark classroom.
I wonder if the more detailed stuff worked too.
I’d drawn her pussy dripping wet. I was dying to see how faithfully it had translated into reality.
When I peeled off those tight skinny jeans, her plump ass bounced out like it was trying to burst free. It looked like two water balloons ready to pop. And nestled between them was a naughty little secret.
“A thong…?”
Between the thin red straps, sticky, glistening pussy juice had completely soaked the fabric. I scooped up the overflowing nectar with my fingers and smeared it all over her ass.
The fact that everything was manifesting exactly as I’d drawn it—including the emotions I’d described—was unreal. The way she couldn’t move an inch was just the cherry on top.
My cock was so hard it felt like it might explode. Back in school, my friends had called it a horse dick. Slightly over twenty centimeters, too thick to wrap one hand around—it was practically famous around campus.
“How about it, teacher? Want to suck it?”
I asked in a deceptively gentle voice laced with mockery, pulling down my pants and shoving my heavy, throbbing cock right in front of her face.
“Uup…!!!”
Kim Hye-yeong—no, the teacher—lunged forward and swallowed me instantly, like she’d been dying for it.
“Hooooooook… That’s right. You were waiting for my cock too, weren’t you?”
Gluck. Gluck. Gluck.
The way she sucked me like she was trying to swallow my entire shaft, drooling everywhere like a bitch in heat, showed just how far gone she was. My cock swelled even harder, standing painfully upright.
“Deeper.”
I grabbed her glossy long hair and shoved my cock all the way to the back of her throat.
“Khheooock… u-up… up…”
“You’re sucking it so fucking well.”
“Kheup… up… e-heup…”
Slap!
I brought my palm down hard enough to leave a red handprint. Her juicy ass rippled like waves.
“Ahup!!!!!!!…”
I grabbed that perfect ass again. When I pressed my middle finger against the deepest part of her crack, her whole body shuddered violently.
Gluck! Gluck! Gluck!
At first her pussy clenched so tightly that even one finger struggled to get in.
This bitch is insanely tight…
“Ah-heuing…!”
Gluck! Gluck!
Now with two fingers.
“Eheup… eot… kheup… heup…”
Her pussy juice flowed even more heavily, dripping down her thighs and splattering onto the floor.
Gluck! Gluck!
“Heuuup… ut… up…”
The cock stuffed in her mouth muffled every lewd moan trying to escape. Her face looked tormented yet unbearably lovely.
“You look so prim and proper, but you suck cock like a pro. Fuck, I’m losing my mind…”
Gluck! Gluck!
“I can’t hold back anymore. I’m putting it in.”
As I pulled my saliva-drenched cock out, I unconsciously glanced at the clock on the wall.
10:23.
No… fuck… time went by that fast?
With a dripping, perfect pussy right in front of me, I couldn’t actually fuck it. Seeing the time snapped me back to reality. I wanted to destroy her, but I had no idea what would happen once the effect ended.
“I’ll fuck you tomorrow!”
I whispered the promise into Kim Hye-yeong’s ear while she was still bent over the desk. In a rush, I pulled her clothes back on, then gave her juicy ass one last hard slap.
She looks so fucking delicious…
Then I bolted from the classroom.
I wanted to see how the magic wore off, but I didn’t trust myself to stay and watch. I don’t even remember how I got home. Even after I arrived, my hands wouldn’t stop shaking. At the same time, the thrill and arousal from earlier kept my cock rock hard.
So it really did work…
To think I’d gotten my hands on this magical sketchbook. Something straight out of dreams or movies.
I needed to give it a proper name. It wasn’t just a regular drawing book anymore.
After thinking for a long time, the perfect word finally came to me.
Sexketchbook.
Sexketchbook Level lv.1
You’ve achieved excellent results with your first drawing!
Produce more outstanding results to unlock hidden features!
Reward:
Allows conversation during the Sexketchbook’s active duration.
**
The next day.
Empty classroom.
I arrived an hour early, worried. Had she made it home safely? Was she collapsed somewhere? Fortunately, no one was there yet.
“The spot from yesterday is spotless, like nothing happened.”
Just looking at the place where things had gotten so heated made me start getting hard again.
“Oh, you’re early?”
I spun around in surprise. Kim Hye-yeong was standing there with a bright, innocent smile, as if she remembered absolutely nothing.
“Ah, yeah…”
“I think I lost consciousness for a moment when I turned the lights off yesterday. I woke up alone in the dark classroom.”
“Ah, I told you we should leave together, but you didn’t answer…”
“Oh, I see. Hehe.”
To cover my awkwardness, I opened the sketchbook and pretended to draw. That’s when faint letters began slowly engraving themselves on the first page.