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My Sister In Law Brother Wants to Marry Me

ch 1 RAINY DAY YUNA FEELING

**************

There was a moment in Seo Yuna’s life she could never forget.

Not the luxurious parties.

Not the endless blind dates arranged by her family.

And not even the cold loneliness hidden behind her perfect smile.

It was him.

The boy who looked at her as if she was the most precious person in the world.

Park Minho.

Her sister-in-law’s younger brother.

A boy four years younger than her.

A boy who should have never crossed the line between family and love.

At first, Seo Yuna thought his feelings were nothing more than youthful admiration.

A temporary emotion.

Something fragile that would disappear with time.

But she was wrong.

Dangerously wrong.

Because Park Minho never looked away from her.

Not when people mocked him.

Not when their families opposed them.

And especially not when Seo Yuna herself tried to push him away.

The more she avoided him—

The closer he came.

Like a storm she could never escape.

“You keep treating me like a child,” Minho once said softly while standing beneath the rain.

His dark eyes trembled with emotions she pretended not to understand.

“But noona…”

He slowly stepped closer.

“I’m a man when it comes to loving you.”

And for the first time in her carefully controlled life—

Seo Yuna felt her heart shake.

This was the beginning of a love that was never supposed to happen.

*************"******************"*"*""""""****"*""""""*""

.(A woman trying to protect her heart.

A boy refusing to give up.

Two families.

Two different worlds.

And a love that was never supposed to happen.

But...

Why is he angry at her?

Why does she keep rejecting him?

And what is she truly feeling inside her heart?

To understand everything...

We have to go back.

Two months earlier.......!)

 

INTRODUCTION PART

-: Seo Yuna :-

Age: 24

Born into the wealthy and respected Seo family, Seo Yuna has always lived a life surrounded by luxury, expectations, and attention.

People describe her as elegant, beautiful, and untouchable.

With her calm eyes and graceful aura, she naturally becomes the center of attention wherever she goes. Whether it is a formal party, a business event, or a family gathering—everyone notices Seo Yuna.

Outside the house, she is known for being strict, mature, and highly professional.

At work and social events, people often feel nervous around her because of her cold expression and calm personality.

Many believe Seo Yuna is difficult to approach.

But that version of her only exists outside.

Inside the Seo mansion, around her family and close friends—

Seo Yuna becomes completely different.

She laughs loudly.

Teases Seo Jihoon constantly.

Acts playful and childish over small things.

And sometimes behave so adorably that nobody would believe she is the same elegant woman from business parties.

Her family often says her personality is “soft like butter” around people she truly loves.

Still—

Behind all her smiles hides a quiet loneliness she never talks about.

Growing up in a rich family taught her one thing:

Perfection matters more than feelings.

As Chairman Seo’s daughter, she spent most of her life trying to become the “perfect daughter” everyone expected.

Even when she was tired.

Even when she was hurting.

Seo Yuna dislikes fake relationships, unnecessary drama, and people who judge others based on status.

She finds comfort in coffee, rainy weather, romance novels, and peaceful late nights.

To the outside world—

Seo Yuna looks cold and unreachable.

But the people close to her know the truth.

She is warm.

Gentle.

Playful.

And secretly craving a place where she can finally be herself.

:-Park Minho-:

Age: 20

Park Minho is a college student studying web designing at Hanseong Digital University.

Unlike Seo Yuna, he grew up in a warm middle-class family filled with laughter and simple happiness.

He is cheerful, playful, and emotionally honest.

Even though he acts carefree most of the time, Minho is surprisingly talented when it comes to designing websites and digital art. He dreams of becoming a successful web designer one day and building a life with his own hard work.

Park Minho smiles easily, jokes around often, and treats people warmly without caring about status or wealth.

But despite his soft personality, there is one thing about him that surprises everyone—

The way he looks at Seo Yuna.

Serious.

Intense.

Unshakable.

Minho hates being treated like a child because of his age. Whenever someone calls him immature, he simply laughs it off.

But when it comes to Seo Yuna…

He becomes a completely different person.

He enjoys late-night walks, listening to music, watching anime, and spending time quietly working on his laptop late at night.

A woman older than him.

A woman connected to his family.

A woman completely out of his reach.

And yet—

Park Min ho never once thought about giving up.

To be continued........!

SPECIAL EPISODE (0)

The Seo Family

Grandmother Seo

Full Name: Seo Hye jin

Age: 72

Grandmother Seo is the matriarch of the Seo family.

Despite her age, she is energetic, intelligent, and surprisingly mischievous.

She is the type of person who can create an entire plan in just a few minutes if it means protecting her family's happiness.

She deeply values promises, relationships, and family bonds.

To outsiders, she appears elegant and graceful.

But her family knows another side of her.

Stubborn.

Playful.

And sometimes dramatically theatrical.

There is only one person in the entire family who can easily see through her schemes.

Seo Yuna.

However, when it comes to Seo Jihoon…

Grandmother Seo always finds a way to win.

Her biggest wish is simple.

To see her grandson happy again.

Especially after watching him close his heart following his painful breakup.

Mrs. Seo

Full Name: Kim Eunji

Age: 40

Kim Eunji is Seo Jihoon's mother and the daughter-in-law of the Seo family.

She is a full-time housewife who quietly takes care of everyone around her.

Most of the time, she is calm, patient, and gentle.

She prefers solving problems with kindness rather than arguments.

However…

When she becomes angry…

Even her husband carefully chooses his words.

She loves her family more than anything and is willing to do anything for their happiness.

She shares a very close bond with Grandmother Seo and often becomes her unexpected partner whenever a new family mission begins.

Even though she looks soft-hearted…

She is stronger than most people realize.

Seo Hyunwoo

Age: 49

Seo Hyunwoo is Seo Jihoon's father and the current chairman of Seo Group.

He is intelligent, disciplined, and extremely hardworking.

Despite being born into a wealthy family, he never relied solely on his family's reputation.

Instead, he worked alongside his father and helped expand Seo Group into one of South Korea's leading companies.

At work, he is calm, strict, and highly respected.

He rarely shows emotions and always makes decisions rationally.

However, at home, he is much softer than people expect.

He deeply loves his wife and children, even if he doesn't openly express it.

He believes actions are more important than words.

Although he looks intimidating at first, he quietly supports everyone from behind the scenes.

He is especially protective of Seo Yuna and often worries about Seo Jihoon, even though he rarely says it aloud.

One thing everyone in the family knows—

He may be the chairman of Seo Group.

But inside the house...

He has absolutely no chance of winning against his mother.

---------------

Seo Jihoon.

Age: 25.

The future heir of Seo Group.

Young.

Successful.

Rich.

And annoyingly handsome.

Unlike the cold image people expect, Seo Jihoon is playful, loud, and easygoing.

He is also the person who understands Seo Yuna the most.

Then one day...

He fell in love.

Park Soojin.

Age: 24.

Warm.

Gentle.

Comforting.

A woman whose kindness naturally makes people feel at ease.

She isn't flashy.

She isn't sophisticated like high society women.

But somehow...

She shines in her own way.

Their love story wasn't dramatic.

There were no grand romantic gestures.

Only comfort.

Trust.

And a feeling of home.

But their marriage unknowingly changed someone else's destiny too.

Two Families. Two Different Worlds.

The Seo Family

One of Seoul's most respected wealthy families.

Elegant on the outside.

Cold on the inside.

Their mansion stands inside Eden Hills.

Beautiful.

Sophisticated.

Untouchable.

But behind those grand doors lies silence, discipline, and endless expectations.

Especially for Seo Yuna.

The Park Family

The Park family lives in Haneul District.

Their home isn't luxurious.

But it is full of warmth.

Even more special...

The Park family owns a small Korean fried chicken restaurant.

It isn't famous across Seoul.

But it is always full of people.

The sound of laughter.

Customers chatting.

The smell of freshly cooked food.

Everything about the restaurant feels comforting.

Mr. Park manages the business.

Mrs. Park warmly takes care of customers.

Park Soojin helps whenever she visits.

And Park Minho often assists after college.

The Park family may not be wealthy.

But they built everything with their own hard work.

One family has luxury.

The other has warmth.

Two completely different worlds.

Connected by one marriage.

And somewhere between those two worlds...

Seo Yuan and Park Min ho slowly begin to fall in love.

(Note:-------------!

All locations, universities, companies, and districts mentioned in this story such as Eden Hills, Haneul District, and Hanseong Digital University are completely fictional and created only for the purpose of this novel.

Any resemblance to real places or institutions is purely coincidentally.)

CHAPTER 2: OPERATION: MARRY SEO JIHOON

TWO MONTHS AGO.

---

Monday Morning.

The morning sun reflected against the tall glass buildings of Seoul as a black luxury sedan smoothly slipped through the traffic.

Behind the wheel sat Seo Yuna.

Black sunglasses.

A crisp white shirt.

Fitted beige trousers.

Simple.

Elegant.

Professional.

Her long dark hair rested softly over her shoulders, and her expression remained as calm and unreadable as ever.

No matter where she went, people noticed her.

Not because she demanded attention.

But because she naturally carried attention with her.

Another ordinary Monday.

Or at least...

That's what Seo Yuna thought.

This was Seo Yuna.

The young director of Seo Group.

The perfect daughter of the Seo family.

At least...

That was what everyone believed.

Soft piano music quietly filled the car.

Then suddenly—

Her phone rang.

Yuna glanced at the dashboard screen.

Seo Jihoon.

Without hesitation, she answered.

"Hmm?"

"Yuna, where are you?"

Jihoon's voice sounded unusually serious.

One of her eyebrows lifted slightly.

"Why?"

"What happened?"

"I'm on my way to the office."

"Is something wrong?"

"Yes."

"It's urgent."

"I need you to come to the hospital right now."

The smile in Yuna's voice immediately disappeared.

She slowly pulled the car over.

"The hospital?"

"What happened?"

There was a brief silence.

Then Jihoon spoke again.

"Grandma's condition suddenly got worse."

"I'm heading there too, but it'll take me some time."

Silence.

Several seconds passed.

"Yuna?"

Jihoon's voice echoed through the phone once more.

"What happened?"

"Why did you suddenly go quiet?"

Yuna stared through the windshield.

Thinking.

Calculating.

Connecting the pieces.

Then slowly—

The corners of her lips curved upward.

A knowing smile.

The kind of smile that only appeared when she had already figured everything out.

"I see..."

She restarted the engine.

"Bro, I'm outside the city right now."

"It'll take me a while to get there."

"And the traffic is terrible."

"You go ahead."

"I'll come as soon as I can."

"Alright."

"Just hurry."

The call ended.

Yuna placed her phone beside her.

The smile never left her face.

"Grandma..."

She softly murmured to herself.

"She's really determined to get her grandson married."

With a small shake of her head, she pressed down on the accelerator.

And instead of heading toward the hospital—

Seo Yuna continued driving toward her office.

---

At The Same Time...

Seoul Central Hospital.

VIP Ward.

An elderly woman sat comfortably on a hospital bed.

A plate of fruit rested beside her.

The television was on.

And judging by her energy, nobody would have believed she was supposed to be a patient.

This woman was the heart of the Seo family.

Grandmother Seo.

The only person capable of controlling Seo Jihoon.

Standing nearby was Mrs. Seo.

The two women looked unusually serious.

As if they were preparing for a secret operation.

Mrs. Seo quietly stepped outside and looked down the hallway.

A few moments later, she hurried back inside.

"Mom."

"He's coming."

Grandmother Seo's eyes immediately sparkled.

"Really?"

Mrs. Seo nodded.

"Yes."

"Your precious grandson is almost here."

"You should get ready."

The moment she heard those words, Grandmother Seo immediately grabbed her blanket.

The television was switched off.

The blanket was pulled up.

And within seconds, she was lying dramatically on the bed.

Mrs. Seo sighed.

"Mom."

"Please try to act naturally this time."

"Last time, your acting was so obvious that Yuna figured everything out immediately."

Grandmother Seo clicked her tongue.

"Yuna is too smart."

"But Jihoon?"

A confident smile slowly appeared on her face.

"I can handle him."

Mrs. Seo couldn't help laughing.

In the entire Seo family...

There was only one person capable of emotionally defeating Seo Jihoon.

His grandmother.

A few moments later—

Footsteps echoed through the hallway.

The atmosphere inside the room instantly changed.

Grandmother Seo quickly closed her eyes.

Mrs. Seo put on a worried expression.

And then—

The door opened.

Seo Jihoon stepped inside.

Completely unaware that a carefully planned operation had already begun.

An operation designed for one purpose.

And one purpose only.

To get Seo Jihoon married.

But nobody inside that room knew...

That this small family mission would eventually change someone else's life too.

Seo Yuna.

Park Minho.

And a love story that was never supposed to happen.

To Be Continued... ✨🖤📖

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