Dominating MIL

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[MC POV]

The interview at Choi Han Group headquarters was about a week away. As the date drew closer, I started to feel a bit anxious.

'Even if it's basically guaranteed, interviews are still nerve-wracking…'

It wasn't officially confirmed, but the chairman had personally offered me a position. He even mentioned creating an additional spot just for me. That made me fairly confident I'd be accepted. Still, the thought of the interview made me nervous.

'I completely messed up my first interview at the delivery company.'

The delivery job itself was demanding, but I got used to it quickly. The interview, though, was a disaster. I was so anxious I couldn't speak properly and stumbled through the entire thing. I was crushed until I received the acceptance notice.

Since then, I hadn't worked anywhere else or gone through another interview. Now, after all this time, that same nervous feeling was starting to creep in again.

"For now, I'll just get some exercise."

Yeonhee was at work, Yeonji was at school, and Aunt Ajung had gone out to buy groceries.

That left just my mother-in-law and me, but it was not like we were having sex all day.

We had been spending quite a bit of time apart lately. During that time, I mostly focused on working out. I had gotten really into it recently, and my body was steadily improving.

Despite my objections, my mother-in-law had bought almost an entire gym's worth of equipment. Thanks to her, I had everything I needed at home to train properly. I still remember what she said when she brought it all in.

She filled the gym room with machines, each costing millions of won.

– 98 million won? That's much cheaper than I expected.

Altogether, the total came close to 100 million won. Yet she seemed more surprised at how little it cost than how much she had spent. She even tried to buy more, but I had to step in and stop her.

The equipment we had at home was better than what most gyms offered. There were so many unfamiliar machines that I had to watch YouTube videos to figure out how to use them. At least five of them needed proper instruction.

Just as I was about to head to the gym to clear my mind, my mother-in-law came into my room.

"Oh my, are you going to work out?"

"Yes, I was just about to."

"Hmm… then, would you mind if I joined you?"

"Mother-in-law?"

"Yes. I usually don't exercise, but I'd like to learn from you, dear."

She wasn't the athletic type—about the same as Yeonji—so it was a bit surprising to see her show interest in working out.

"Sure. Go ahead and change into your workout clothes, then meet me in the gym."

"Okay, I'll be right there."

I actually liked the idea of working out together. I thought it would be nice to teach her, so I headed to the gym first. I waited with a sincere heart, genuinely looking forward to it. That innocent excitement didn't take long to turn into something else.

"I'm here… Trainer♥"

The moment she walked into the gym, ready to learn, I couldn't take my eyes off her.

She wasn't wearing anything particularly revealing. Just regular gym clothes women usually wear. But somehow, she radiated an entirely different kind of energy.

The way her outfit hugged her body and the effortless allure she carried made everything else disappear from my mind.

'If she ever showed up to a public gym like this, it would be complete chaos…'

Her figure was already amazing, even without any workout. Her curves—especially her full breasts and well-shaped hips—stood out in a way no other woman could match. Even women with great bodies couldn't replicate her natural appeal. She had a way of triggering a man's instincts, even in ordinary clothes.

And on top of that, she was beautiful. I couldn't help but stare.

"Hehehe♥ If you look at me like that, I'll get a little embarrassed."

"Ah, s-sorry! I didn't mean to…"

I had already seen every part of her body before, and we even shared a master-slave dynamic. I thought nothing could surprise me anymore. But even without wearing anything seductive, she looked unbelievably enticing.

"But why did you call me 'Trainer?"

"Well, I'm learning how to work out from you, so you're my trainer."

"Hmm… I guess that makes sense. Okay then, let's start with a warm-up. Come over here."

"Yes, Trainer ♥."

She seemed genuinely interested in learning and wasn't actively trying to seduce me—at least, that's what I thought. So I focused on teaching her seriously.

I led her to the stretching area in front of the large mirror, unaware of the sly, playful smile on her face.

We began our warm-up exercises in front of the full-length mirror.

"Hnnng…♥"

'Yeah… my mother-in-law should definitely never go to a public gym…'

She was just warming up lightly, but just watching her made me feel like my dick was going to get hard.

Her large breasts bounced with even the slightest movement. And when she bent forward, her firm, round hips became even more noticeable. I couldn't help but feel the urge to reach out and touch her.

If someone like my mother-in-law ever went to a public gym, people would probably welcome her with open arms. But it wouldn't stop a swarm of guys from trying to get her number. With that much attention, she probably wouldn't even be able to focus on exercising.

"I'm going to do some leg stretches. Can you help me?"

"Sure, sit down here."

"Okay~"

She sat down and spread her legs to the side. Surprisingly, she was much more flexible than I expected. Her legs stretched close to a full 180 degrees, bringing her body very close to mine.

Squeak… Squeak…

"Hnnng…♥ Hng…♥ Ugh…♥"

She was letting out soft moans as she stretched, but the sounds were so seductive that I started losing focus. Her chest gently brushed against me, and I found myself becoming more and more aroused.

'Stay calm… Just stay calm…'

We were here to work out, so I tried to suppress the growing heat inside me. Since she didn't seem to be intentionally seducing me, I did my best to concentrate on the training session.

"I think that's enough stretching. Want to move on to some light cardio?"

"Yes, Trainer."

She seemed to really enjoy calling me that. Smiling, she followed me to the treadmill.

"Alright, let's start with a brisk walk. Ten minutes should be good."

"Okay."

My mother-in-law started up the treadmill and began walking at a steady pace.

She wasn't used to regular workouts, so we planned to keep things light for now.

Bounce. Bounce. Bounce. Bounce.

"Hmm…♥"

Even just walking briskly, her chest moved a lot. She was wearing a sports bra, but it clearly wasn't enough to fully contain the movement. The way her breasts bounced with each step made it hard not to stare.

"Trainer, my breasts are bouncing too much. Can you hold them for me?"

From the very beginning, my mother-in-law was slowly revealing her true intentions.

"I knew it..."

As a perverted, masochistic, submissive bitch, she often tried to seduce me while pretending not to.

When we were alone at home, she would emphasize her ass or breasts on purpose or casually rub against me as if it were an accident.

I couldn't resist, and I ended up ravishing and training her every time.

However, when she asked me to teach her how to work out, she wasn't trying to seduce me, so I wasn't paying attention. Now that she was starting to seduce me, however, I almost pounced on her.

"Hold on... We're working out right now."

I usually gave in to my mother-in-law's seductions, and we would end up having sex.

'And recently, Ahjung Auntie has been joining in...'

If I gave in to her now, we wouldn't be able to work out at all. We would just waste time. I hesitated for a moment.

"Here, hold them tight for me♥"

My mother-in-law leaned forward and asked me to hold her breasts so they wouldn't bounce.

She was shamelessly showing her masochistic, submissive side. I almost gave in to her seduction, but I managed to resist.

If I had given in, I definitely would have ravaged and fucked her. I tried my best to stay rational and reached out my hand.

Squeeze!

"Haa♥ Thank you♥"

"Then, start."

"Yes♥"

My mother-in-law seemed surprised that I didn't pounce on her right away. But when I squeezed her breasts, she seemed to get excited. She started the treadmill with a slightly flushed face.

"Hehehe. It's nice that they're not bouncing thanks to your hands, Trainer."

My mother-in-law's breasts were so big that they didn't fit in my hands. They bounced quite a bit, even when she was just walking briskly. It was amazing that I was able to hold them in place.

"It must be hard to carry around such big breasts..."

I wasn't a woman, so I didn't know how uncomfortable it was. But I could feel it indirectly. My mother-in-law finished her run.

"Haa... haa... haa... It's hard to move my body after so long."

She was slightly sweaty after her brisk walk.

The way the sweat trickled down her collarbone and into her cleavage was seductive.

'I see this all the time, but why does she look so hot today?'

My mother-in-law would always pant and collapse in a sweaty mess after I fucked her. But seeing her like this while we were working out was exciting me in a different way.

"Then, please continue to teach me, Trainer."

My mother-in-law was openly trying to seduce me. She smiled seductively, waiting for me to fuck her.

Her workout clothes were slowly becoming see-through with sweat. She pretended not to notice as she headed to the next piece of equipment.