Sung Yu-ri

Hong Gil Dong is the son of a minister. Due to the strict Confucian laws of the Joseon Dynasty, Gil Dong, born an illegitimate child, is not accepted by his father and family. After struggling severe discrimination by family and society, Gil Dong escaped and decided to become a bandit leader. Gil Dong robbed from the corrupt officials only to give to the poor citizens. His popularity within the peasant society soars, and many view him as a hero. (imdb)

At seventeen Tae-Woong meets two people who will change his life. One is fellow genius Jeong-Kyu, who is at first Tae-Woong's rival, but then becomes his best friend. The other is Bo-Ra, a girl he saves her from bullies. (imdb)