Don't Threaten Me, It Turns Me On!

"Give me more butt."

"Nngh... like this? Hehe...♡"

"Hold still. If you keep wiggling, I can't get the tapes on right."

In the makeshift bed set up in the back of the Department Head's Office, Luna lay prone with her snowy white ass raised high, face buried in the pillow. She swayed her hips side to side.

Rustle.

Rustle.

The sound of diapering. My hands had trembled at first, but after a few days, I'd gotten the hang of it. I deftly tightened the tapes and smoothed out the leg gathers.

"All done. You can get up now."

Smack. For the finishing touch, I gave the now-bulging adult diaper a light pat on top.

"Hyahut?!♡"

Luna let out a nasal moan and flipped over, burying her face in my chest. Topless up above, adult diaper below. What a sight. But she looked utterly blissful, like it was the comfiest thing in the world.

"It's warm. So cozy. Squeezed nice and tight—I love it."

"Yeah, I bet you do."

"It's even better 'cause Master put it on me."

Luna wrapped her arms around my neck and hung off me. Through her thighs clamped around my waist, I could feel the diaper's crinkly texture pressing against my pants.

"What now? What do you wanna do? What should we play?♡"

"What else? You need to work. Midterms to grade. Oh, and the department office called—apparently, there's months' worth of documents piled up waiting for the professor's approval?"

"Let's just play instead. Pleeease? Feed me, Mama.♡"

She pursed her lips like an octopus and whined. I shook my head firmly.

"Finish sorting through the backlog, and then I'll play with you."

"Tch... Master's so mean. Your slave's bored."

"Technically, you're the department head too, you know? Quit whining and get to it. I'm the one who takes the flak from the office."

Luna's a fast worker.

...When she feels like it, anyway.

"This is such a hassle. Should I just fail 'em all?"

"Go ahead if you wanna see a riot."

I paused, then opened my bag.

"Professor."

"Yeah?"

"Wanna play a game?"

What I pulled out was a leather dog collar.

Luna's wine-red eyes lit up like fireworks.

"Is that mine?"

"Finish your work, and I'll put it on you."

"!!"

Quick on the uptake. She bolted upright.

"For real? No take-backs? You'll put it on and take me for a walk too, right?"

"Of course."

"Yay!"

Luna dashed to the desk. Her pen flew so fast it blurred. Scribble-scribble-! Sign. Review. Approve. Sign again. What would've taken hours normally was done in ten minutes flat.

This woman's a genius, alright. She just needed the right motivation: a dog collar.

"Done! All done!"

Luna thrust the stack of papers at me, eyes sparkling. If she had a tail, it'd be spinning like ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠a propeller.

"Good. A promise is a promise."

I approached her. Luna obediently tilted her head back, offering her neck. Her pale nape flushed pink with anticipation.

Click. The leather collar locked into place.

"Haaahng...♡"

Luna writhed, letting out a lewd cry. Just from the collar—she looked ready to cum on the spot.

I tugged the leash.

"Kek!"

"Sit."

Thud. Luna dropped to her knees on the floor, face a picture of ecstasy she couldn't contain.

"Hand."

She offered her paw... er, hand.

Instead of taking it, smack! I slapped her cheek. A handprint bloomed like a flower on her white skin.

"Master's so cool...♡"

But Luna just grinned dopily, like I'd showered her with praise.

Luna crawled under the desk.

"Slaves don't deserve chairs!" she declared.

"Yesss... so happy... so happy... ahn...♡"

She curled up at my feet, giggling lewdly as I stepped on her head.

"Step harder. Crush your slave's head more.♡"

"Yeah, yeah."

I settled into Luna's chair—the massive executive ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠throne of the department head.

Pretty comfy.

Savoring the plush cushion and the footrest (Luna)'s texture, I opened my laptop to tackle my backlog of assignments.

Before long, under the desk, Luna had slipped off my shoe and was fiddling with my toes.

"Masteeeer...♡"

Occasionally licking between them.

It tickled, but bearable.

Knock knock.

Peace didn't last.

"Department head? Are you in?"

A bright, chirpy voice. I knew it well: Alice, my senior by a year and the magic department's student rep. The elf who worshipped Luna like a goddess.

We're screwed.

I tried to jump up, but Luna grabbed my ankle from under the desk.

'It's the student rep! What if she finds out?!'

Luna wedged my foot between her breasts. Warm, squishy softness enveloped my sole. No escape.

"Just tell her to come in. Or I'll open the door like this."

"Uh... come on in!"

Sinister blackmail. I blurted it out before I could stop myself.

Creeeak— The door opened, and in walked the golden-haired elf. Stern face, prim outfit. Alice.

She frowned at me in the chair.

"You're Han Si-hun from class of '54, right? Why are you in the department head's seat...?"

"Oh, uh... She stepped out for a sec and asked me to sort some files."

"Hmmm."

Alice approached ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠with a skeptical glare, stopping right at the desk.

"Where'd the department head go?"

"T-to the bathroom."

"Really? Guess I'll wait then."

Alice stood ramrod straight in front of the desk. No signs of leaving. Cold sweat beaded on my brow.

Right now, under the desk—behind the modesty panel—Luna was crouched. Collared like a dog. Face buried between my legs.

And then.

Zip. The sound of my zipper going down. Faint, but thunderous in my ears.

'?!'

I glanced down. Luna was smirking mischievously. She mouthed:

Her hand slipped into my pants.

"Hngh!"

I sucked in a sharp breath.

"Something wrong?"

"N-no! My throat's just a bit sore... Dry air maybe? Ahem."

Alice eyed me oddly. Under the desk, Luna's warm hand gripped my cock. And started stroking up and down.

Stroke, stroke, stroke.

"Nngh...."

"You okay? Your face is red."

"Just a cold coming on... Cough!"

I disguised my groan as a cough. This was insane. What would this uptight rep do if she knew her revered professor was servicing her student under the desk?

Luna's head shifted. Her lips brushed my tip.

And then.

"Chuuup."

Intense pleasure shot up my spine. At the same moment, Alice spoke up.

"Right, about that department contest? I heard the budget got slashed—know anything?"

"Uh, n-not really?"

"You're the prof's TA. You sure you haven't heard?"

Alice shoved a chart in my face. But my focus was glued under the desk.

"Sluuurp... slurp... lick..."

Wet, sticky sounds. Luna rolled my tip like candy. Every flick of her hot tongue on my slit sent electric jolts racing through me.

"You listening?"

"Y-yeah! Yes! Listening!"

"Then why aren't you answering?"

Alice narrowed her eyes suspiciously.

"N-no, it's nothing. Cold's just hitting hard."

"Want me to check?"

Alice reached toward me. That's when—

"...!!"

'Please stop! She'll catch us?!'

'Keep it up and I'll really spank you.'

"You've been weird this whole time. I hear water sounds or something. From under the desk."

Alice leaned down to peer underneath. This was it—no more excuses.

That's when inspiration struck. Or rather, impulse. The one way to subdue this uncontrollable professor.

I thrust my foot hard into the desk space. And pressed my toe firmly into her diaper's bulging crotch, rubbing.

I felt Luna's body stiffen. I pressed harder.

'Stop. Or I'll rub harder.'

I glared a warning, grinding my sole for emphasis.

'Hold still.'

Squish. Squish.

Luna clung to my leg, trembling violently. She spat out my cock from her mouth.

Finally, Luna behaved. She flattened herself, rubbing her cheek against my foot like a defeated pup.

"Whew...."

I let out a sigh of relief.

"Alice senior."

"Yeah?"

"Prof's not feeling well today—went home early. I forgot to mention."

"What? You said bathroom earlier."

"I was distracted. Just leave the papers on the desk. I'll bring 'em up first thing tomorrow."

Alice didn't drop her suspicion. But figuring there was nothing more to grill, she headed for the door.

"Fine. Make sure she gets it. It's important."

"No worries."

Alice opened the door and left. Footsteps faded down the hall.

Click. Door shut.

"Haa... haa...."

I slumped fully back in the chair. Felt like a decade shaved off my life.

"Come out. She's gone."

Silence under the desk.

"Professor?"

No response. I scooted the chair back and looked down.

".......♡♡"

Luna lay prone, twitching. Her face was beet red, eyes brimming with tears. And from her ass—

Squelch. The diaper swelled up.

"What the hell?"

"I... I squirted....♡"

"Pardon?"

"Master... pressed with his foot... couldn't hold it...♡"

Wow. This woman. She'd climaxed right there in that situation.

Luna crawled out. The room filled with a warm, musky scent.

"Master's bad...♡♡ Someone was there... and you did that...♡"

She gazed up at me with wet eyes. Her lips curved in uncontrollable bliss. Pure ecstasy from the ultimate taboo.

"Pervert. Sadist. Psycho."

"Pot calling the kettle black."

I clicked my tongue. Guess cleanup's on me again.

"Change me."

"Do it yourself."

"Too weak to move. Carry me."

Luna sat on her soaked diaper and stretched her arms toward me.

"......Haa."

I scooped her up. She was light.

"Master."

Luna whispered into my neck.

"Next time, in the conference room?"

"Shut up."

I smacked her ass and headed for the sofa.

...My hands were soaked in piss.