Yoshimura Jun/Han Ee-soo (Cast : Kim Nam-gil)

President, Giant Hotel

The second in command of Japanese enterprise Jun International Co. established by Yoshimura Junichiro who adopted him and raised him as his heir. His Japanese name is Yoshimura Jun and his past life as Han Ee-soo is completely under veil. He keeps a poker face and has both the ability to bide time until the right moment and the persistence to finish off a job.

With his sharp intelligence and strong desire for victory, he has achieved miraculous growth for Giant Hotel making it one of the biggest players in the Southeast Asian hotel & resort market in just a year after taking over as president.

To him, money and power are virtues. However, this is only a facade. His real goal is not for money or power. Money and power are only weapons for his true purpose.

He always says, "The world needs balance". To achieve that balance, he needs to give back what was received, or to give back something far worse than what he received. The time has finally come. He returns to Korea for the first time in 12 years as Yoshimura Jun sharpening a blade in his heart.

Jo Hae-woo (Cast :Son Ye-jin)

Prosecutor, Seoul Central Prosecutor's Office

The only daughter of the CEO of Gaya Hotel Group, she is independent, passionate and arrogant. She has the drive to pursue what she wants and the self-esteem to confront anyone without flinching. Her parents, who were in an unhappy arranged marriage, never saw each other except on special occasions. Her womanizing father and her sensitive and prickly mother helped her harbor distrust and disillusionment about marriage. She was able to survive because of her grandfather Jo Sang-gook, the founder of Gaya Hotel Group. As she became older, she learned to trust and admire her grandfather out of anyone else in her life.

Even when she wanted to run away from home, it was her grandfather that helped her stay pat. However, his love was not enough to melt away her pain. Her father's name was in the papers for adultry and her mother had thrown a glass vase at him. Stepping on the broken glass the young Hae-woo walks out of the house. Han Ee-soo follows this girl who had saved him from trouble. That's how her first love came to her.

Ee-soo was warm and strong. He didn't lose faith in people even through his difficulties. He was able to open the way for her to trust in love and people again. She became a girl that laughed again. She now harbored a dream to become an artist. She still had troubles with her parents, but she didn't feel unhappy anymore. She wanted time to pass and both her and Ee-soo to become adults. It was compete happiness that she felt for the first time in her life. However, the unthinkable happened...all at once.

Oh Joon-young (Cast : Ha Seok-jin)

Director of Strategic Planning, Gaya Hotel

A man who considers warm and true human feelings with importance and a man who does not want to be tied down. He has the skill to look deep into a person's heart and an open mind to look beyond what is there. He has a broad mind to look over petty things, but once something exceeds his set limit, he becomes ruthless and unforgiving.

People think he is an elite who led a model student's life, but he was actually the best fighter in his high school. His younger sibling had died in a car accident caused by a drunk driver. Although the driver paid for his crime, he couldn't forget or forgive. He became the school's roughest problem student within a year. Around the same time, Hae-woo started inching her way into his heart. She was also a student looking for an escape and although they expressed it differently, he knew she was as lonely as he was. The desire to protect and comfort her became his first love. However, there was no space in her heart for him.

Thankfully he liked Han Ee-soo who had taken up her heart. It felt like he had met his match. He also believed that it was okay to lose Hae-woo if it was to a guy like Ee-soo.