Lee Hyun-seok

A Korean mercenary, Ivan, begins to protect a Korean girl named Jihye, who goes to the Tchaikovsky Academy of Music. The two fall in love. One day, Jihye gets kidnapped by the Russian mafia.

Ji Young Sun, when she was very young, gave away her daughter Lee Ja Kyung after giving birth. She later remarries and creates a new family, but soon after, her husband dies leaving her behind with her stepson Gu Wang Mo and daughter Gu Seul Ah. Lee Ja Kyung now grown, after being orphaned once again as a child by the passing of her foster parents, lives a life of loneliness and lack of love. Her birth mother Young Sun comes to find her, but in order to keep her daughter Ja Kyung by her side, tries to match her up with her stepson.

James O'Neil is a 28 year old man who was adopted by people overseas when he was young. He is the CEO of a very large supermarket and is the typical man with cool charm and deals with things in a cool and collected manner. Lee Jin Hee is 32 years old and her husband suffered a horrible accident on the 6th month they were married. She takes care of their son for seven years and is faced with bankruptcy. Jin Hee meets James and they do business together and soon they develop a romantic love story. (Source: DramaWiki)