The Slime Mouthpiece
The sight of Rene’s body trembling sent a thrill through me. What could possibly be running through her mind right now? Shame? Or maybe… pleasure? I pushed her down onto the bed.
“M-Master…”
Her eyes, glistening with moisture, looked up at me. In those crimson irises, I could see both ecstasy and conflict swirling together. Acting like she doesn’t want it even though she does. I mocked her inwardly and spoke with feigned innocence.
“What’s wrong?”
She whispered so quietly it was almost a breath.
“Yesterday… just like yesterday… please be gentle.”
She turned her head away in embarrassment the moment the words left her mouth.
“You mean like yesterday—when I put the ring gag on you and fucked your throat raw?”
Slap!
Her palm struck my chest as she cried out.
“That’s not it! Like on the sofa last time… that’s what I want… I don’t like it when it hurts…”
“So the reward was that good, huh?”
Rene’s face flushed bright red and she couldn’t answer. Of course she couldn’t. Admitting it would be the same as calling herself a slut.
“Why? Didn’t you want a reward?”
“Ugh…”
When she remained silent, I continued.
“Before I give you the reward, we’re going to have a training session.”
—Twitch.
“B-But you said you’d give me a reward…”
Fear flickered across her face.
“I’ll give it to you after the training is over.”
Rene nodded reluctantly.
“…Yes.”
She looked at me with an expression that said she was on the verge of tears. It must have been impossible for her to imagine what I was about to do.
“First you have to attend class. If your grades are good, I’ll give you a reward like yesterday. If they’re bad, you’ll be punished.”
I walked over to the training cart, took out an aphrodisiac, and examined the ring gags. Hmm… none of these were quite right. The one we’d used last time had a structure that made it difficult for her lips to wrap around my cock properly, and the sensation had been disappointing.
“Is there anything else?”
I rummaged through the compartment containing the gags and found a slime mouthpiece.
“What about this?”
It was a U-shaped mouthpiece made of slime. It looked exactly like the one my master used to have. Once fitted over the teeth, it gently cushioned them so that even if she bit down hard, it wouldn’t hurt. At first glance it seemed crude, but the fact that it could only be removed by hand made it perfect for oral training.
I grabbed the aphrodisiac and the mouthpiece and approached Rene.
“W-What is that?”
She flinched at the sight of the unfamiliar mouthpiece.
“Open wide and try it.”
“What is it?”
Rene shrank back from the object she had never seen before.
“It’s something that stops you from biting my cock.”
Her voice trembled.
“M-Master… I don’t like that…”
Was it because I had thrust so violently into her throat last time? Her crimson eyes shook violently.
“If you do a good job on your own, I won’t hurt you. So don’t worry.”
“R-Really?”
When she looked at me with doubt in her eyes, I smiled and nodded.
“Yes. If you suck me off as deliciously as you did after your early education yesterday…”
“Stop! Just do it.”
She cut me off and glared. Rene looked genuinely angry.
Oh? Her venom was coming back? This was the personality I had seen when we first met. Heh. So the switch was a mother-related insult, huh? It had been a while since I’d seen this rebellious charm. She had quite the pride; that tsundere side of her was rather attractive.
The look in her eyes ignited my sadistic tendencies. The way this lowly slave could glare so fiercely was part of Rene’s charm. I shrugged my shoulders and held the aphrodisiac out to her.
She stared at the vial I offered for a long time.
“By the way… what is this medicine?”
“It’s a drinkable aphrodisiac.”
She looked at it like it was garbage.
“Disgusting…”
“Just drink it already.”
Her eyes were full of suspicion as she stared at the vial.
“Are you sure this won’t do anything weird to my body?”
It was a little stronger than the topical kind, but it was harmless. After all, this was a product used on slaves ranging from a few hundred silver to ones worth dozens of gold. If there were side effects, the Trainer Association would be in serious trouble.
“Yes. It’s supplied by the Trainer Association, so it’s perfectly safe. Drink it with confidence.”
—Pop.
I uncorked the vial and held it out to her. She hesitated, staring at it.
Looks like the switch was needed after all.
“If you don’t want me to ravage that pretty mouth-pussy of yours today, drink it. Now.”
She gave me a look of utter disdain.
“Sigh… Do you really have to talk like that?”
“It’s the truth, isn’t it? What’s the problem?”
“Fine. I don’t want to talk about it anymore.”
Rene snatched the vial roughly.
—Gulp, gulp.
Angry, she drained the entire thing in one go.
“I drank it. Do whatever you want.”
I waved the transparent mouthpiece in front of her face.
“Then open wide.”
She had been keeping her lips tightly shut, but now she let out a sigh.
“Do I really have to wear that?”
Of course. There was always the chance she might try to bite my dick off.
“Yes. I don’t want my precious cock getting bitten. So open up. Say ‘ah.’”
“But… don’t do it like yesterday… Ah…”
She opened her mouth cautiously. I carefully placed the mouthpiece over her teeth and pressed it down firmly with my fingers. The slime molded perfectly to the shape of her teeth.
“Close your mouth and wait.”
I pressed it firmly against her upper teeth as well.
“Stay like that for ten minutes.”
At my words, Rene’s face twisted.
“Why?”
Her pronunciation was slurred because of the slime mouthpiece.
“Why do I have to wait?”
She nodded.
“Because when it mixes with your saliva, it hardens into the perfect shape. It has to be properly fixed so my cock stays safe.”
I took a ten-minute hourglass from the training cart and flipped it over.
“There. Ten minutes of free time.”
With that, I fetched my master’s book from the living room and lay down on the bed.
“Hmph.”
I ignored the sulking Rene and opened the book. Before long, all the sand had fallen. I turned to her.
“Open your mouth.”
Rene, who had been lying beside me, turned her head.
“Ah…”
When she opened her mouth, I pressed on the slime to check if it had set properly.
“Perfect.”
At this level, even if she bit down with all her strength, she wouldn’t be able to harm my cock. Time for the next step.
I grabbed a vibrator, came back, and slowly removed my pants.
—Clink, clink.
The sound of my belt echoed loudly.
“Ten minutes. If you make me cum within ten minutes, I’ll give you a reward. If you can’t, you’ll be punished. Understood?”
I flipped the hourglass again and continued.
“Now suck me like the greedy little whore you are.”
Rene looked embarrassed by my crude words.
“What are you doing? Are you just going to sit there like a shy newlywed? If you stay still, you know I’ll just ram it down your throat, right?”
She glanced up at me once.
“T-Then take off your underwear.”
“Take them off for me.”
With a reddened face, Rene grabbed my underwear and slowly pulled them down. My cock, not yet erect, drew a spark of curiosity in her eyes.
“S-So I just… suck it?”
“Yes.”
At my firm answer, she carefully brought my cock to her lips. Her red lips parted and she began to suck on my glans.
“Mmmph… chuuup…”
The visual was incredibly arousing, but her technique left much to be desired. Well… it would be strange if a virgin with no experience with men was suddenly an expert. I gave her instructions one by one.
“Suck without letting the slime touch my cock.”
Rene glared at me with narrowed eyes before looking back down. She must have been annoyed. Still, it couldn’t be helped. My criticism had been accurate. If the slime was touching me, that meant her teeth were too. Teeth during a blowjob were painful and unpleasant, so I had to point it out.
Maybe because of my comment, she avoided touching me with her teeth—but her tongue movements became weaker.
“Chuuup…”
Was she still too inexperienced? At this rate, there was no way I could cum. I needed to hurry her along.
“With a pathetic mouth-pussy like that, do you really think you can make me cum in ten minutes? Take it deeper.”
I also criticized her unsatisfying tongue work.
“Lick it like you’re savoring the taste of my cock. Use your tongue properly. Yes, like that.”
Thanks to my scolding, Rene began rubbing her tongue against my shaft with much more vigor. With her eyes closed and her head bobbing up and down, the way she stimulated me with her tongue was incredibly lewd. But I was still dissatisfied that she couldn’t even take half of me.
“Mmmph…”
“No, don’t just do that. Mix it up. At this rate you’ll never finish in ten minutes.”
I couldn’t help but sigh. Rene still couldn’t swallow my entire length.
“Haa… This isn’t going to work, is it?”
I grabbed the back of her head.
“Huuup! Mmph!”
I thrust roughly, scolding her.
“Like this! That’s how you do it!”
“Hek! Heeeek!”
Her delicate hands pushed against my thighs, but the difference in strength made it a futile effort. Watching her scratch at my thighs with her nails, I finally let her go.
“Cough! Cough…!”
“I’ll let you breathe for now, so hold it in your mouth and keep going like that.”
“Uek…”
She was gagging, tears and snot covering her face. I gave her a moment to calm down.
“Cough, cough.”
“Alright, try sucking again.”
Her face had gone deathly pale.
“If you don’t do it quickly, I’ll force it down your throat.”
At my warning, Rene began sucking my cock again.
“It’s still not all the way in. Take it deeper.”
—Twitch.
She pushed my cock as far as she could, then—
“Cough! Cough!”
She coughed violently.
“Sob… sob…”
“Who told you to pull back? Did you think I’d go easy on you just because you did well earlier?”
When I tried to shove it back into her mouth, she resisted fiercely, but her mouth was already open. I forced my cock inside.
“If you want to do well, you have to accept the training properly. Try doing it yourself again.”
I grabbed her head as she slumped and pushed myself back into her mouth.
“Mmph… Kgh… Chuuup.”
She coughed while sucking, clearly in some pain, but I ignored it. Her movements were definitely a little better than before. Still, finishing within ten minutes seemed difficult.
“Just so you know, if I don’t cum in ten minutes, I’m going to use your mouth-pussy however I want and punish you too. You understand that, right?”
Maybe it was because of my chilling warning, but Rene began licking and sucking with even more enthusiasm.
“Huuup… Kgh… Uuup.”