Chapter 172: Professor Gives Punishment (R18)

I stepped up behind the two of them as they braced their hands on the heavy wooden desk, skirts already hiked high by Val’s efficient hands. The sight of those two perfect asses presented in the tight academy uniforms sent a fresh surge of heat through me.

Yerin’s short pleated skirt barely covered anything now; Yoona’s longer one was folded neatly at her waist, exposing the smooth curve of her cheeks and the thin fabric of her soaked panties.

Val moved to stand at my side like a proper assistant, her expression calm and professional even as her eyes lingered on the twins. "Students are in position, Professor," she said smoothly. "Ready for their punishment."

I let my palm rest on the warm curve of Yerin’s ass first, giving it a light, testing squeeze. "You two thought you could sneak off and act like little sluts in my academy?" My voice dropped into a low, stern register. "Uniforms half-undone, mouths full of cock, and still expecting to walk away without consequences?"

Yerin shivered under my hand, but her voice came out breathless and eager. "We’re sorry, Professor... we won’t do it again—"

The first sharp spank cut her off. My palm cracked across her right cheek hard enough to make the flesh jiggle and bloom pink. She gasped, hips jerking forward against the desk.

"Wrong answer," I said. "You’ll address me properly while you’re being disciplined."

Yoona turned her head just enough to look back at me, black horns still gleaming, cheeks flushed. "Yes, Professor..."

I spanked her next, harder, the sound echoing in the soundproofed room. Her body rocked forward, a soft moan spilling out before she could stop it. Val stepped in without being told, reaching around to cup both girls’ breasts through their half-open shirts, thumbs brushing over stiff nipples to keep them stimulated while I worked.

I alternated between them, sharp, measured smacks that left glowing handprints on pale skin. Yerin’s shorter skirt made it easy; every spank lifted the pleats and exposed more of her. Yoona’s longer legs trembled each time my palm landed. After a dozen solid hits on each, both of them were panting, asses hot and pink, panties visibly soaked through.

"Count them out loud," I ordered, delivering another firm spank to Yerin. "And call me what you should be calling me when you’re bent over my desk like this."

Yerin’s voice cracked on the first number. "One... Daddy—"

Another spank. "Two, Daddy—"

Yoona followed immediately when I switched to her, the word tumbling out in a needy rush. "One, Daddy... two, Daddy..."

Val’s fingers slipped under the soaked fabric of both pairs of panties at the same time, rubbing slow circles over their clit while I continued the spanking. Every time my hand landed, their hips pushed back into Val’s touch, chasing the dual sensation of sting and pleasure. The wet sounds of Val’s fingers working them open filled the gaps between the sharp cracks of my palm.

I stopped after twenty on each side. Both twins were trembling, breathing hard, asses glowing a deep, satisfying red. I hooked my fingers into the waistband of Yerin’s panties and dragged them down to her thighs, leaving them stretched there. Then I did the same to Yoona. The scent of their arousal was thick in the air.

"Look at that," I murmured, spreading Yerin’s cheeks with both hands so Val could see how wet she was. "My students are dripping all over the desk after a simple spanking. Disgraceful."

Val leaned in and pressed two fingers into Yerin without warning, pumping them slowly. "She’s very responsive, Professor. Shall I prepare her for further discipline?"

"Do it." I moved behind Yoona, one hand wrapping firmly around the base of her horn again. The moment I took control of it she melted, a soft, broken sound leaving her throat. I used the grip to keep her head turned so she could watch Val fingering her sister. "Watch closely. You’re next."

I slid two fingers into Yoona from behind, finding her just as soaked and tight. She clenched around me immediately, hips pushing back for more. I fucked her with my fingers in steady strokes while Val did the same to Yerin, the two of them moaning in overlapping rhythm.

"Punishment isn’t finished," I said, voice still in that low professor register. "You’re going to take turns sucking your Daddy’s cock while the other one gets her ass spanked and her pussy played with. And you’re going to thank me for every single thing I do to you. Understood?"

"Yes, Daddy," they answered together, voices shaky and eager.

I pulled my fingers free and stepped back just enough to free my cock again. It was already hard and aching from the earlier blowjob and the sight of them bent over. Yerin turned first, still braced on the desk with her panties around her thighs, and took me into her mouth without needing to be told. The wet heat of her tongue and the way she looked up at me while she sucked made my grip on Yoona’s horn tighten.

I used that grip to pull Yoona’s hips back and landed another series of sharp spanks on her already pink ass while Val’s fingers stayed buried inside her, curling against the spot that made her thighs shake. Every time my palm cracked across her skin, Yoona moaned around nothing and pushed back harder onto Val’s hand. Yerin’s mouth worked me in long, wet strokes, saliva dripping down the shaft as she tried to take me deeper.

After a few minutes I switched them. Yoona’s mouth replaced her sister’s, the angle of her horns making it easy for me to guide her rhythm with my hand. Yerin received the next round of spanking, harder this time, until she was crying out "Thank you, Daddy" between every impact while Val’s fingers pumped into her.

The roleplay settled deeper with every exchange. I made them recite why they were being punished between mouthfuls of cock. I made them ask for more spankings. I made them beg to be allowed to cum while Val’s skilled fingers kept them right on the edge without tipping over. Every time one of them got close I ordered Val to stop, leaving them trembling and empty until I decided they had earned more.

When both of them were reduced to flushed, glassy-eyed messes, ass cheeks glowing, thighs shiny, uniforms completely wrecked, I finally pulled Yoona off my cock and bent her fully over the desk again. Yerin was ordered to hold her sister’s horns and keep her head turned so she could watch.

"Val," I said, "hold her open for me."

Val’s elegant hands spread Yoona’s pink cheeks, exposing everything. I lined up and pushed into her in one slow, deep thrust, filling her completely. The tight, wet heat and the broken moan she let out almost undid me on the spot. I set a steady, punishing rhythm, one hand still on her hip, the other reaching around to grip a horn and keep her arched just the way I wanted.

"Thank your Daddy for fucking you," I ordered between thrusts.

"Thank you, Daddy—ah—thank you for fucking your dirty student—" Yoona’s voice broke every time I bottomed out.

Yerin watched with dark, hungry eyes, still holding her sister’s horns, her own free hand rubbing circles over her clit because I hadn’t given her permission to stop. Val moved behind Yerin and slid three fingers into her, matching the pace of my thrusts so both twins were being filled in the same rhythm.

I switched after a while, pulling out of Yoona and pushing into Yerin in one smooth motion. The younger twin cried out, pushing back to take me deeper. I spanked her already-red ass in time with my thrusts while Val’s mouth closed over Yoona’s clit, keeping the older twin on the edge.

The room filled with the wet sound of skin on skin, the sharp crack of occasional spanks, and the constant stream of "Yes, Daddy—thank you, Daddy—please, Daddy" spilling from both of them. I made them trade places again and again, fucking one while Val used her mouth and fingers on the other, never letting either of them cum until I decided the punishment had gone on long enough.

When I finally gave permission, it was with a hard thrust and a firm tug on Yoona’s horns. "Cum for your Daddy. Both of you. Now."

They broke almost at the same time, Yoona clenching hard around me while Yerin shook apart on Val’s fingers and tongue, their cries loud and unrestrained in the soundproofed room. I followed a few thrusts later, burying myself deep in Yoona and filling her while she was still pulsing around me.

We stayed like that for a long moment—me still inside her, Val gently stroking both twins through the aftershocks, the three of them breathing hard. Eventually I pulled out, watching the slow drip of my cum down Yoona’s thigh with open satisfaction.

Yerin’s voice was hoarse but still playful when she spoke. "Is detention over, Daddy... or do the naughty students need another round?"

I gave her glowing ass one last firm squeeze and looked at Val, who was already wiping her fingers clean with a calm little smile.

"Detention’s just getting started," I said. "Uniforms stay on. Positions stay the same. Assistant Val is going to help me make sure neither of you can sit properly for the rest of the week."

Both twins shivered at the promise, and the roleplay rolled straight into the next round without a single break.