I Fucked My Mother-in-Law to Marry My Girlfriend

It was incredibly fortunate that I met my girlfriend, Yeonji.

Having grown up as an orphan, I never experienced a parent's love. As soon as I became an adult, I left the orphanage. Using the money I'd saved from part-time jobs and a small amount of government support, I rented a studio apartment. Then, I started working as a delivery driver—a job that paid well and allowed me to rely on my physical strength.

"I'm going to save up and buy my own place!"

That had always been my dream. Since I was young, I wanted to buy a house where I could live with the woman I would marry someday. I also dreamed of opening a small café or chicken restaurant to build a stable life.

"First, a house!"

I also longed for a girlfriend, but I figured I'd spend all my money on dating if I didn't focus on buying a house first. So, I put my dreams of romance and marriage on hold for a while.

"I'm not so bad, am I?"

At 185cm tall and having received a couple of confessions during my school days, I didn't think I was lacking in the looks department.

So, I worked hard as a delivery driver, aiming to save as much money as possible. My plan was to keep at it until I turned 30 and then move to the countryside to buy a house.

It was a bit of an overexertion, but the more deliveries I made, the more I earned. I worked tirelessly, saving about 4 million won a month, and five years flew by.

"Ugh!"

Just as I was getting used to the routine of my delivery job, something unexpected happened. It was a regular day, and I had only one last stop to make.

"They even deliver to places like this…"

It was a luxurious apartment complex, the kind where only residents were allowed inside. Normally, the guards at the entrance would stop me, but that day, they were absent—likely due to a staff shortage—so I was let in without any issues.

Without giving it much thought, I rang the doorbell at the delivery address.

"Yes?"

"!!!!!!!!"

I fell in love at first sight with the woman who opened the door.

"Marry me!"

"Wha—what?"

The words slipped out before I could even think.

My meeting with my girlfriend was sudden, and I acted like a fool.

My girlfriend, Jin, was flustered at first but blushed and suggested we start as friends. A month later, we began dating.

Originally, I had planned to work for another five years to save enough money to buy a house. But when I saw her, I knew I had fallen in love at first sight. I felt that if I didn't seize the moment, I'd regret it forever, so I confessed right away.

"Oppa~"

"Yeah? What's wrong?"

"I just wanted to call you… Hehehe."

It's been almost a year since we started dating, but we still feel that same fluttery excitement.

We're sitting together in my studio apartment, watching TV, but my girlfriend's gaze is always on me, filled with affection.

"Haa… I never get tired of seeing her every day."

We've been meeting daily since we started dating, and our love for each other hasn't faded one bit.

"It's almost time to sleep…"

At my girlfriend's words, spoken with a blush, I went to wash up. When I returned, she had also finished freshening up.

"She has such an unbelievable body… gulp."

She was covering herself with a towel, but her large—no, massive—breasts weren't fully hidden.

My girlfriend is 155cm tall, which makes her 30cm shorter than me.

With her youthful appearance, she could easily pass for a high school student at first glance.

But what instantly gives away her adulthood is her chest.

She has an unbelievable I-cup size, which adds to her undeniable allure.

Combined with her pretty face and well-proportioned figure, she's honestly way out of my league.

"Oppa… it's gotten bigger♥"

Yeonji, my girlfriend, gives a shy smile, as if it's the first time, her cheeks flushed with embarrassment.

Even though it's been over six months since we first saw each other naked, Yeonji always reacts this way.

"How could I ever get tired of this?!"

"Come here."

"Kyaa♥"

I gently grab Yeonji's wrist, pulling her toward me, and lay her down on the bed. She's a little surprised but still wears that shy smile.

When I remove the towel, her voluptuous breasts, slender waist, and firm, alluring curves are fully revealed.

"At her age, she's completely bare down there!"

It might be a matter of preference, but Yeonji has no hair growing there—naturally smooth from the start.

Her clean, delicate folds are tightly closed in a straight line, adding to their beauty.

"Oppa♥ Woop♥ Chooop♥ Woop♥ Haap♥"

As I bring my lips close to hers, Yeonji responds with a delighted, almost mischievous smile, kissing me eagerly.

Despite her initial shyness, she's the first to deepen the kiss, her tongue seeking mine with a playful urgency.

I match her passion, and we lose ourselves in a deep, intimate kiss that lasts for over five minutes.

"Haa♥… Haa♥… Oppa, you must be tired now… Let me take care of you♥"

Yeonji, now even more heated than I am, sits me up and climbs onto my lap, facing me.

"Then… I'll start♥… Eung♥ Haang♥"

She begins to move her hips slowly, her body pressing against mine.

"It feels amazing… but…"

This moment with Yeonji is incredibly pleasurable.

However,

"Oppa, your dick is rubbing against my pussy♥ Haang♥ Haang♥"

My length is gliding along the outside of her entrance, not penetrating her.

It's a technique often referred to as sumata—simulated sex rather than the real thing.

"Huuung♥"

Twitch, twitch, twitch.

After about five minutes of this, Yeonji's body shudders as she reaches her climax.

Her slick arousal coats me, making everything even wetter, but I'm still far from my own release, remaining fully erect and throbbing with need.

"Haa♥… Now it's your turn♥"

Yeonji, looking thoroughly satisfied, slides off me and kneels between my legs. She takes me into her mouth, her tongue working skillfully.

Tap, tap, tap, tap.

"Chop♥ Haap♥ Chooop♥ Oppa, cum happily♥"

"Ugh… Yeonji, that feels so good."

"♥"

The sensation is overwhelming, and it doesn't take long before I'm pushed over the edge.

Brrt, brrt, brrt, brrt.

"Heuht♥ Oppa, you came so much today too♥"

A generous amount of semen sprays out, enough to cover Yeonji's face, and she watches me with a satisfied smile as I finish.

"I'll go wash up now."

"Okay… Thank you, Yeonji."

And just like that, our intimate yet non-penetrative encounter comes to an end.

"It's still not enough…"

Tap, tap, tap, tap.

While Yeonji is in the bathroom, I quickly take care of my lingering arousal, masturbating to relieve the unfulfilled desire.

The reason we can't have proper sex is simple: my size is too much for Yeonji, and it causes her pain.

When we first tried, Yeonji was visibly frightened when she saw me. Even after 30 minutes of foreplay, she struggled too much when I attempted to enter her, so I decided to stop.

In the end, this is what our intimacy has become.

"But it's still progress…"

Over the past few months, Yeonji has come a long way. At first, she was so innocent that she couldn't even look at me properly, but now she's able to perform something akin to a blowjob. It's a significant improvement.

"It's okay! We'll take it slow and figure it out after we're married!"

I genuinely love Yeonji, so even if I have to relieve myself in private, I would never force her into anything. We're still in the early stages of our relationship, and there's plenty of time ahead of us. We've decided to take things slowly and build toward the future together.

"Oppa, I'm done washing up. Eit♥"

"Okay, Yeonji."

As soon as she's finished, Yeonji comes over and hugs me tightly. Her affection makes me feel even more loved.

"And you didn't forget that we're meeting Mom this weekend, right?"

"Of course, I remember… It's my first time meeting my future mother-in-law."

"Hehehe… It feels so real when you call her that, like we're already married."

"I'm absolutely only going to marry Yeonji."

"And I'm definitely going to marry Oppa too… Don't worry, Mom will approve."

"Okay, thank you, Yeonji."

This weekend marks the first time I'll be meeting my future mother-in-law, Mrs. Jin.

"Cough… Yes."

"Is that so?"

I already knew that Yeonji's family was wealthy.

But I had no idea they were part of the Choi Han Group, the world's leading company.

"I really had no idea it was on this level…"

I didn't expect they lived in an enormous mansion with sprawling gardens, like something out of a Western aristocrat's estate.

"It takes ten minutes just to walk from the front gate to the house…"

While I stood there, utterly stunned by the sight of the grand mansion, Yeonji remained completely calm—after all, this was her home.

"Have you arrived?"

"!!!!"

Just then, my mother-in-law, who had been waiting for us, appeared.

I felt as though the air had been knocked out of me.

The same overwhelming sensation I'd felt when I first saw Yeonji washed over me again, leaving me utterly bewildered.

My mother-in-law, standing at around 170cm tall, stepped out wearing a rather revealing dress.

Her figure, particularly her ample bust, made it immediately clear that she was Yeonji's mother.

'Thi—this is insane!! What am I thinking, looking at my future mother-in-law like this?!'

"It's nice to meet you. I'm Jeongyeon, Yeonji's mother."

"I—it's nice to meet you too!! I'm Lee Juhyun, Yeonji's boyfriend!"

I did my best to suppress my emotions and greeted her with a loud, respectful tone.

My greeting must have been acceptable, as my mother-in-law smiled warmly.

"Well then, let's have a little chat. Yeonji, go spend some time with Yeonhee."

"Okay, Mom… Good luck, Oppa."

Her request to speak with me alone made me even more nervous.

I followed my mother-in-law into the reception room.

'Even this room is bigger than the studio apartment I live in.'

The stark difference in our living standards was undeniable, but neither Yeonji nor I were in this relationship for money or material possessions, so I tried not to let it bother me.

Still, the sheer scale of the disparity was a little intimidating.

"It's almost your one-year anniversary with Yeonji, isn't it? Congratulations."

"Thank you… Mo—Mother-in-law."

"Hehehe… I didn't expect to hear 'mother-in-law' so soon… but I like it."

'I—I think I can see her panties… gulp.'

Her dress had a deep side slit that revealed her thighs, and for a moment, I thought I caught a glimpse of her underwear. I quickly averted my gaze, feeling flustered.

"I don't have any intention of opposing your relationship. You're someone Yeonji truly loves, and that's all that matters to me… As long as she's with someone she truly loves, I'm happy."

"Mother-in-law… Thank you! Marriage might still be a ways off, but I'll definitely make Yeonji happy!"

"Hehe, good… I'll trust you, then."

My mother-in-law, who seemed completely unfazed by material differences, had given her blessing to our relationship.

'Now I see where Yeonji gets her kindness and purity from.'

"I'll allow you to marry Yeonji on one condition."

"I'll do anything! Just name it."

"Then… please train me to be Juhyun's sex slave♥"