character - Yong-sik

character - Yong-tae

character - Dr. P

character - [Son Ha Neul's father]

character - Yoo Ji-Na's father

character - Kim Byung-hoon

character - Jang Sung-kyu

character - Uncle

character - Hwang Dae-yong

character - Jung Myung-sik

character - Kim Do-il