Cruel Love (Korean: 못된 사랑; RR: Motdoen Sarang; lit. Bad Love) is a 2007 Korean drama series starring Kwon Sang-woo, Lee Yo-won, and Kim Sung-soo. The series aired on KBS2 from December 3, 2007 to February 5, 2008 on Mondays and Tuesdays at 21:55 for 20 episodes. Despite having low domestic viewership ratings, the drama recorded high export sales from Japan and Taiwan due to the attraction of Kwon's Korean Wave.
"Cruel Love" is a story between Na In-jung (Lee Yo-won) and two boys Kang Yong-ki (Kwon Sang-woo) and Lee Soo-hwan (Kim Seong-soo) searching for true love. Just in his 20s, In-jung is a promising cellist and doesn't lack anything in life. During his glory days as a famous figure in the symphony orchestra, In-jung discovers that his first love (Soo-hwan), is again a married man and once married. 5 years in prison for adultery. Rich in ambition and desire to succeed, Soo-hwan marries the daughter of a tycoon to acquire his corporation. Their loveless marriage made their life hell. Soo-hwan loves In-jung at first sight but real life forces him to break up with her. After a broken love with Soo-hwan, In-jung becomes a fried chicken seller in a poor village, with no hope in life. One day, In-jung meets pop singer Yong-ki, the illegitimate son of a wealthy conglomerate president. Not enjoying love from a young age, Yong-ki can only choose art as a place to express his feelings. He lost his first love and is also a colleague Joanna because of his lack of courage and determination before the opposition of his father, who is also Soo-hwan's father-in-law. Through many random events since meeting In-jung, Yong-ki realizes that painful love still exists in his heart. When In jung realizes that he is in love with Yong-ki, Soo-hwan, who ruined her life, appears and pleads with her for forgiveness. How will In-jung decide? This is the crux of the "Cruel Love".