Kim Taehyung

Centuries ago, the world was ruled by kingdoms, castles, horses, and royal traditions. Grand halls were filled with candlelight, and every decision was made for the future of the crown.

In that era, love was never simple. Royal duty always came before personal feelings.

Y/n was the most beautiful princess of Seoul, the beloved daughter of the king. Known throughout the kingdom for her beauty, she was also famous for her personality. She was cheerful, playful, and childish in the sweetest way. Unlike other royals, she hated being overly serious and often brought happiness wherever she went.

Kim Taehyung was the king’s most trusted knight.

He was the strongest warrior in the kingdom, known for his discipline, loyalty, and strict personality. He was calm, intelligent, observant, and feared by enemies. A man who rarely showed emotions and always placed his duty above his own desires.

When threats against the princess increased, the king gave Taehyung one order.

"Protect my daughter at any cost."

From that day forward, Taehyung became Y/n’s personal knight.

At first, he treated her only as his responsibility. Her playful behavior often tested his patience, and he constantly reminded her to be careful. But slowly, the princess who brought chaos into his perfectly controlled life became the only person who could make him smile.

The strict knight and the playful princess became inseparable.

Through every royal event, every journey, and every moment spent together, they slowly fell in love.

Taehyung tried to deny his feelings. He knew a knight and a princess could never have a future together. Their love was forbidden.

But their hearts chose each other anyway.

They secretly began a relationship, cherishing every moment they had together. Before everything fell apart, Taehyung gave Y/n a precious pendant with a large blue diamond, a color that perfectly matched her eyes. It became a symbol of their love—a promise that no matter what happened, their hearts would always belong to each other.

But their happiness did not last forever.

When the kingdom discovered their forbidden love, they were separated. Y/n was forced into a marriage she never wanted, while Taehyung was imprisoned.

The knight who had sworn to protect the princess could not protect their love from the cruelty of their world.

Separated from Y/n, Taehyung eventually lost his life in captivity and due to brutal beating from other knight.

When Y/n learned she had lost the person she loved more than anyone, the pain of losing him became too much to bear, and she killed herself.

Their love became a tragic story passed down through generations.

But fate was not finished with them.

Centuries passed.

And somehow… they were both reborn.

---

Now, in the year 2026, Y/n was a student at Oxford University.

She was brilliant, sharp-minded, and exceptionally talented. She could understand things faster than most people and excelled in almost everything she tried.

Yet despite her intelligence, she still carried the same playful and childish personality from her past life—bright, energetic, and full of life.

Every night when she slept, she dreamed of a man she had never met.

A man who felt strangely familiar.

In her dreams, she saw memories of happiness, laughter, and a love that felt older than time itself.

Sometimes, those dreams became painful.

She saw separation.

She saw the fear of losing him.

She saw a love that ended before it was supposed to.

And somewhere else, Taehyung experienced the same dreams.

Kim Taehyung was no longer a knight.

He was one of the most powerful and feared mafia leaders in the world.

Cold, intelligent, and dangerously calm, Taehyung controlled an empire built on power and influence. His name alone was enough to make people hesitate.

He was ruthless when necessary, impossible to manipulate, and always several steps ahead of everyone around him.

Among his many underground dealings was the trade of priceless and ancient antiquities. Rare artifacts, forgotten treasures, and historical objects passed through his hands because of his connections and power.

One day, a rival mafia boss offered him an unusual ancient relic.

A necklace.

At the center was a large blue diamond surrounded by delicate ancient designs.

It was priceless. Something that could have been sold for an unimaginable amount.

But the moment Taehyung touched it, something felt strange.

He couldn't explain it.

It wasn't because of its value.

It felt familiar.

Like a memory he couldn't reach.

Like something he had lost a long time ago.

Instead of selling it, Taehyung kept the necklace.

The feeling bothered him. He had spent his entire life trusting logic and facts, yet this ancient pendant created an emotion he couldn't understand.

Wanting answers, Taehyung began researching the history behind the relic.

After searching through old records, forgotten documents, and historical archives, he finally discovered the story behind it.

"The Necklace of True Love."

"An ancient pendant that belonged to Princess Y/n of Seoul, known as the most beautiful princess of her era."

"The necklace was gifted to her by her lover, the greatest knight of the kingdom."

"Their love was unlike anything the kingdom had ever witnessed. Despite belonging to different worlds, the princess and the knight loved each other deeply. However, their love was forbidden, and fate separated them before they could have the life they dreamed of."

"The necklace became a symbol of true love, representing a bond that remained even after separation and time."

Taehyung stared at the words for a long time.

Something about the story felt painfully familiar.

But he didn't know why.

He didn't know who the knight truly was.

He didn't know what happened to Princess Y/n after they were separated.

He didn't know why their love ended in tragedy.

And most importantly—he didn't know if she had ever been reborn.

Then he saw the painting.

An ancient portrait of Princess Y/n.

The moment his eyes landed on her face, something inside him changed.

Her eyes.

Her smile.

The feeling he had carried without understanding.

Suddenly, fragments of memories began returning.

A princess laughing inside a castle.

A promise to protect her.

A blue diamond pendant placed into her hands.

A love that had survived centuries.

Taehyung froze.

The woman from his dreams wasn't a dream.

The story wasn't just history.

Somewhere in the past, he had loved someone.

Someone he had lost.

Someone he still couldn't remember completely.

And now he had only one question.

Where was Y/n?

Had she been reborn?

Was she somewhere in this world, living a life without knowing him?

For the first time in his life, Kim Taehyung had power over everything except the one thing he wanted to find most.

The girl his heart remembered.