Chapter Index

    “Before we begin, let me introduce you quickly. This is Claire. She is a prospective instructor at our dojo, and you will be seeing her around the dojo from time to time.”

    “I’m Claire. It’s nice to meet you.”

    A black-haired foreign woman named Claire bowed politely. Her fit body, wearing only black panties, looked more cool than sexy.

    “This is Elena. Elena will also help with the classes, but rather than an instructor… you could say she’s an assistant demonstrating. Now, say hello.”

    “Hehet…♡ U, um, I’m Elena… Nice to… Ough♡ mee, meet you…♡”

    And the blonde foreign woman named Elena groaned even as she bowed her head in greeting.

    She was constantly trembling like a puppy who needed to pee, squeezing her legs together, and a red blush had risen on her pale white face.

    Yoo Chae-eun and Lee Do-yeon couldn’t take their eyes off Elena.

    It wasn’t just because she was pretty… but more like, what should I say.

    “…Wow.”

    Just looking at her made me excited.

    The clamps tormenting those pretty pink nipples, and the chastity belt that made it impossible to go to the bathroom or masturbate without permission, made Yoo Chae-eun’s heart race endlessly.

    It was scary, but also intriguing.

    I wondered what it would feel like to wear something like that.

    -Squeak…

    Thinking about it naturally made my pussy wet.

    “Now, let’s begin. This M class is a class that we only introduce to members who have registered at our dojo and have special inclinations.”

    “Special inclinations…?”

    “Yes. Other classes with the same meaning will be created as well, but this M class stands for ‘masochism’ among many inclinations. Simply put, it’s a Mazo class.”

    “Ma, Masochism?! I, I’m not like that…”

    Yoo Chae-eun hurriedly denied his words. In her mind, a masochist was someone who happily accepted harsh acts such as being severely injured to the point of bleeding.

    She was definitely not like that.

    Then, Joo Seong-hyeon smiled as if he knew everything and continued.

    “Haha, being a mazo doesn’t mean being severely tormented. For example… I sometimes spank your butt during sex class, right?”

    “Yes, yes… that’s every time…”

    “You felt good, didn’t you?”

    “……Yes.”

    “That’s also a type of masochism. Of course, it will be a little more intense than that, but we won’t suddenly raise the level drastically. Little by little, only as much as you can accept.”

    “Ah…”

    “Actually, even if you want to go really deep, I don’t like hurting your beautiful bodies, so it’s hard to go that far. The goal is to help you gain more joy and pleasure while you take classes while developing your inclinations in that way.”

    Only then was Yoo Chae-eun able to feel relieved.

    No.

    Beyond relief, if it were as stable as Joo Seong-hyeon said, I was rather curious. I was looking forward to it.

    I kept glancing at the blonde foreign woman next to Joo Seong-hyeon.

    ‘So, tormenting those nipples with clamps like that… I, I kind of want to try that much…’

    The chastity belt wasn’t something that caused great pain to the body, so I wanted to try wearing it once.

    ‘Seeing as I’m having these thoughts, it seems like I definitely had that inclination in me… I also liked it when the director was rough with me during class… Ah, then maybe Do-yeon unnie too…?’

    Somehow, I thought our tastes were a little similar, so I wondered if Lee Do-yeon was also recommended this M class because she had the same inclinations.

    So, I turned my head slightly to look at Lee Do-yeon.

    “Haa… haa…”

    “……!”

    Lee Do-yeon was focusing more than ever on Joo Seong-hyeon’s explanation. Her face was flushed, she was breathing heavily, and she had both hands between her legs with her knees bent.

    -Squeak, squeak…

    ‘U, uwaaa… Donyeon unnie, could she be…’

    The faint squelching sound told me what Lee Do-yeon was doing.

    Surely Joo Seong-hyeon or those foreigners noticed it, but they continued the explanation without a word.

    “You probably know why Elena is wearing nipple clamps or a chastity belt now, right? Elena has a complete mazo tendency, so she likes these things. Moreover, not only that… Claire?”

    “Yes, Director.”

    -Click

    At Joo Seong-hyeon’s call, Claire knelt in front of Elena and used a key to unlock the chastity belt.

    Then, what Yoo Chae-eun saw was.

    “Oheureueueung…♡”

    Elena’s face melted with ecstatic moans, and.

    -Squeeeeeak…

    A dildo piercing through the thick and clean pussy lips with not a single hair visible.

    And.

    -Smack!

    “Eunggeueuk…!”

    “Lena. Turn around.”

    “Oheuk… Yes, heuk…♡”

    In the middle of Elena’s plump, snow-white butt, which had red handprints left on it after being slapped by Claire.

    “O, on her butt… Oh my god…”

    It was an anal plug that was so blatantly inserted that even Yoo Chae-eun, who was watching, was shocked.

    I could see the reason why that beautiful blonde foreigner winced and groaned every time she took a step, and why this sticky and erotic smell wafted when the chastity belt was removed.

    “…….”

    “Haaaa…♡”

    In Yoo Chae-eun’s life, the thought of putting something in her butt had never even occurred to her.

    But why does my heart beat so fast when I see that?

    Lee Do-yeon next to me felt the same way, and her panting became sweeter and louder.

    While the two people’s eyes were focused, another punishment was inflicted on Elena’s butt, which was so pretty that Yoo Chae-eun couldn’t even dare to touch it.

    This time it was Joo Seong-hyeon’s hand.

    -Smack!

    “Eunggeueuk…!”

    “Elena. You have to lie down so the members can see you well.”

    “Sor… I, I’m sorry… Master…♡”

    “…! Ma, Master?!”

    “Master…”

    “Ah, it’s because Elena also has a sub tendency. She asked me to use her as a sex slave. Of course, we don’t force this kind of play on the members. Unless you want to.”

    “I, I see…”

    “…….”

    I should have felt relieved that he said he wouldn’t force me.

    But somehow, Yoo Chae-eun felt disappointed.

    “Anyway, that’s pretty much how it is. We stimulate you with our hands like this, and sometimes use things like collars, and use anal plugs or dildos modeled after my cock to…”

    -Squeezing…! Squeak, squelch, squelcheeeeee…!!

    “Ock, eunggik… Oheureueueueung♡!!!”

    “We also shove it in as we please like this. But Elena keeps struggling today. Claire. Bring the handcuffs and ball gag.”

    “Yes, Director.”

    It was only natural that Elena struggled when her butt and pussy were being poked with something so thick like that.

    But to prevent even that, Elena’s arms and legs were tied together and restrained, and her mouth was gagged so she couldn’t even groan properly.

    And.

    -Squelch, squelch, squelch, squelch…!

    Joo Seong-hyeon’s hands shoved the dildo in, and Claire’s hands added to it, inserting and removing the butt plug, continuing to torment her.

    “Eueueueueub…! Eueeub…♡ Oeueeub♡!!”

    -Twitch, twitch, twitch…!

    That beautiful blonde princess couldn’t resist anything except twitching her body like an earthworm.

    But.

    “Heueueueung♡”

    She still looked happy.

    Even though her mouth was blocked and she couldn’t even make a proper groan, I could fully feel that joy, pleasure, and happiness were all contained within it.

    He tormented her until the floor was soaked with bodily fluids.

    “That’s enough. Put the chastity belt back on… and blindfold her until the end of class, okay?”

    “That’s a good idea, Director. Lena will definitely be happy too.”

    “Heueub… Heuh, eueugeub…!”

    He quickly stopped it and put on the chastity belt and blindfold.

    “Eueueueueub…♡”

    And then he left her alone.

    He ignored her as if she didn’t exist, even though she was trembling and groaning pitifully, and Joo Seong-hyeon and Claire stood up straight and turned their eyes back to the members Yoo Chae-eun and Lee Do-yeon.

    “What do you think? Are you a little more interested in the M class?”

    “Yes, yes…! Definitely… please…!”

    “Me too…! I, I’m interested…!”

    Yoo Chae-eun and Lee Do-yeon nodded with energetic answers, appealing that they would take the class.

    The director, pleased with the two people’s active attitude, sat on the floor with the corners of his mouth raised.

    “Good. Then one at a time… Shall we start with Do-yeon? Let’s just have a light taste today. Now, lie down on my lap.”

    “Yes…!”

    The director knelt on the floor and called Lee Do-yeon, and Lee Do-yeon smiled brightly and hurried to the director.

    And she lay down with her stomach on his thigh.

    -Slide, slide…

    “Haeut, eueung…”

    “Do-yeon, you have a big butt, so you’ll have a baby later. Until then, I’ll cherish you a lot. Got it?”

    “Yes… Please take good care of me…♡”

    The director stroked Lee Do-yeon’s round butt and said that.

    Soon.

    -Slap…! Smack, smack!

    “Haeueuk…!”

    The director began to hit Lee Do-yeon’s butt, as if mothers in the old days scolded their children.

    Weaker than what he did to Elena, but with a force that would definitely hurt when you heard the sound.

    -Smack, smack, smack!

    He hit her butt without stopping.

    “Heut, aheuk… Ah, ahng, ahng…!”

    Lee Do-yeon let out moans full of pleasure and excitement.

    Even from Yoo Chae-eun’s point of view, Lee Do-yeon’s face was by no means suffering from pain.

    She was happy.

    A married woman in her mid-20s who was even married.

    She was getting her butt spanked by the dojo director and she was so happy.

    But was it a little lacking?

    Lee Do-yeon asked the director.

    “Aheut… Di, Director… A little more… Ahng…♡ You can do it harder…♡”

    “Shall I? Seeing your pussy getting wet, I think you’ll be okay.”

    -Squelch…

    “Hieueut…! Yes… Th, then maybe…”

    “Tell me.”

    “Can I… eueut… C, call you… Master…♡?”

    “Oh~ All the way there on the first day? Of course. As much as you want.”

    “Th, then… I’ll try… Th, that is… Eueung… Ma, Master…♡”

    “Okay, Do-yeon.”

    “Haeueueut…♡”

    -Smack!

    “Ahahng…!”

    “Hmm, there’s a lot to teach. Do-yeon. Master is enduring the pain in his hands to spank your butt, so are you just going to enjoy it?”

    “Eueheuk… I, I’m sorry… What should I do…”

    “You have to say thank you. To the master who is suffering, with all your heart, ‘Thank you for spanking the butt of a lowly slave.’”

    “Ah…♡”

    “I’ll forgive you just once because you didn’t know. Shall we try again?”

    -Smack…! Smack!

    “Haeueuk…! Heueut… Thank you… Master… Thank you for spanking the butt of a lowly slave… Thank you so much…♡”

    “Good job. Do-yeon, you have talent. If you listen well, I’ll cherish you a lot like Elena over there and give you rewards on your pussy, so work hard in the future.”

    “Yes, yes…♡ I will work hard… So that I can be cherished by Master…♡”

    “Okay, okay. Then go back to your seat. I have to do it for Chae-eun too.”

    “Yes, Master…♡”

    With that, Lee Do-yeon got up and returned to her seat.

    “Haa, haeueue…♡”

    Her face was lewdly stained with excitement, and her pussy was soaked with bodily fluids pouring down.

    -Thud

    Without being told to, she knelt down politely with hearts drawn in her eyes.

    “Chae-eun. Come and lie down.”

    “Eueut, yes…”

    Yoo Chae-eun, who was distracted by Lee Do-yeon’s erotic atmosphere and gestures, approached Joo Seong-hyeon and carefully lay down on his thigh.

    At the same time, she also asked Joo Seong-hyeon.

    “Um… Director…”

    “Yes?”

    “Like Do-yeon unnie… Can I, can I do the same thing…?”

    “Hmm, you haven’t even had a taste yet… Well, since it’s the first day and the level isn’t strong, it’s not bad to experience this much right away. If you try it and it doesn’t suit you, you can cancel it next time. Right?”

    “Yes, yes… Please… Please.”

    It was the director’s words that seemed to be setting a safety line, but Yoo Chae-eun sensed it.

    She probably wouldn’t take back these words.

    Yoo Chae-eun, who had no intention of calling Joo Seong-hyeon ‘Master’ because it felt strange in many ways, changed her mind after seeing Lee Do-yeon’s ecstatic face.

    ‘It’s just changing calling him oppa during sex class to Master. If I do that, the director will… be a little rougher with me than he always is…♡’

    Thinking about it that way, it didn’t seem like a big deal.

    So she asked, and the director gladly accepted.

    And.

    “You saw what Do-yeon did, right? If I give you a ‘reward’, you have to answer well too, Chae-eun.”

    “…Yes, Master…♡”

    “Good. Then where…”

    My body tensed up for a moment with the atmosphere of punishment… no, a ‘reward’ starting.

    Soon.

    -Slap…! Smack! Slap!

    “Ahhit…!!!”

    The moment my butt felt hot as if it had been burned, the erotic pleasure that bloomed from the painful sensation.

    Yoo Chae-eun herself.

    “Heut… Th, Thank you for spanking the butt of a lowly slave…”

    Lowers herself as a slave.

    “For giving me this… reward…”

    She expresses spanking as a ‘reward’.

    “Thank you… Master…♡”

    The moment she called the director Master and expressed her submission in words.

    -Squelch… Trickle…!

    “Haeueue…♡”

    With the pleasure of a new feeling spreading from the brain to the whole body, my pussy became wet with excitement.

    No.

    I felt a small climax.

    An indescribable joy swirled in my chest.

    ‘That’s why… that’s why Do-yeon unnie too… Elena too… liked it so much…♡’

    Now I call Joo Seong-hyeon Master, and get spanked by him.

    -Slide, slide…

    “Wow, I didn’t know Chae-eun had a talent for this. Good job.”

    When I was praised for doing a good job.

    “Ah, aah…♡”

    Yoo Chae-eun was ecstatic again.

    I wanted to.

    I wanted to listen more, receive harassment disguised as rewards, and receive more praise.

    With that in mind, Yoo Chae-eun slightly lifted her butt.

    So that ‘Master’ can hit it well.

    “Look at our Chae-eun. She knows how to be cherished?”

    -Smack, smack! Smack!

    “Ahahng…! Ah, ahng, ahng…♡ Thank you, Master…!”

    Like that today.

    Yoo Chae-eun and Lee Do-yeon gained a master to serve for the rest of their lives.

    ***

    “Kiss… Thank you for your hard work, Director.”

    “Claire too. Thank you for helping me. Please suffer a little once in a while in the future.”

    “If Seonghyeon needs me, please call me anytime. I will be happy to help you anytime.”

    “Okay. By the way, how is Elena doing these days? Does she listen well? Should I give her a reward in her ass soon?”

    “Haaak…♡ Masteeer…”

    “No. Recently, she’s been sluggish and arrogant… I don’t think it’s time yet.”

    “……!”

    “Really? It’s been a while since I last gave her a reward, and she still hasn’t come to her senses? That won’t do. Elena.”

    “Y, yes…”

    “If you don’t get praised by Claire today, you won’t be able to see my face for a month. Got it?”

    “No……!”

    “Claire. Do you like my gift?”

    “I like it so much. Thank you, Seonghyeon. I love you.”

    “I love you too. After I marry all the kids now, I’ll accept Claire as my wife in the next round, so please wait a little longer.”

    “Yes. Thank you. I’m looking forward to that day.”

    “Then I’ll go teach the class, so play moderately in this room.”

    “Okay.”

    -Click

    “Lena.”

    “…Claire! Anything, anything just say it, Claire! And please… please to Master…!”

    “What is a dog saying now? It’s too noisy to hear.”

    “…Woof! Pant pant… Woof, woof!”

    “That’s right. You have to know your place. Sit.”

    “Woof!”

    “Stand up.”

    “Woof!”

    “Sit.”

    “Woof…!”

    “Stand up.”

    .

    .

    .

    .

    .

    “Sit.”

    “Wo, woof…! Heuek, hek, hek…!”

    “Now you’re a bit more like a dog. The way you stick out your tongue and pant is now a bit more like a bitch.”

    “Woof…”

    “Bang!”

    “Woof…!”

    -Collapse!

    “Vulgar pussy.”

    -Squeeze…!

    “Heugeueuk…!”

    “I guess you like having your pussy stepped on with my foot? That’s why you did that to me in the past because you liked it?”

    “Wo, woof… woof!”

    “Then you know what to do next, right?”

    “…Woof!”

    “Come here and lick my butt with that arrogant tongue. If you make me go, I’ll praise you. I don’t really feel anything when a woman like you licks me, but.”

    “Kkeut…”

    “You don’t have to if you don’t want to. If you can endure not seeing Seonghyeon for a month, that is.”

    “…Woof! Eueub… Lick… Lick, lick…!”

    “Hehe, hehe… Hehehehe… How does it feel to lick the butt of the woman who used to be your toy?”

    “Lick… Heueub… Lick lick…!”

    “Yeah… yeah. Beg while licking like a dog like that. Bury your pretty face in my butt so much that it gets crushed, and lick harder…!”

    “Ueueueueub…!”

    “Haa… I love it…! I love you, Seonghyeon…! Thank you for giving me this opportunity… Heut, hehehe… I sincerely love you…!”

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