Characters :

Park Shin Hye - her mother died giving birth to her, after 5 months her father remarried. she may look fragile but she is a strong willed woman, she has a mind of her own. she is a painter just like her mother. her father is one of the riches man in korea, they own the biggest hotel and shopping mall chains in korea. 

Jang Geun Suk - Shin Hye's step brother, his mother married her father when she was just five months old, he was adopted by her father after the marriage. he was groomed to be the successor of Park Group of companies, he and Shin Hye are very close they treated each other like real siblings, he promised their father that he will protect her no matter what happens. 

Lee Min Ho - 2nd son of Lee Corp., he is a good son...smart, has a warm heart. he adores his older brother. he followed his fathers wishes in one condition he will not be force into marriage without love, he wanted to choose the person he will spend his life with. 

Choi Jin Hyuk - eldest son of Lee Corp., he was the disappointment of his father, he studied arts despite his fathers objection, he loved Im Joo-Eun despite the objection of his father.