On the July 27 episode of SBS’s drama series City Hunter, Yun Seong, played by Lee Min Ho, finds out that President Choi Eung-chan, played by Cheon Ho Jin, is his father.
Yun Seong decides to ask his mother if Choi is really his father. He says, “I’m not trying to blame you. I feel sorry, but I guess I got at something you’ve tried to keep from me. Is President Choi really my biological father?” Then, she sheds apologetic tears, saying, “Sorry, I should have told you before.” And she let him know that Choi doesn’t know of his son’s existence.
Source: Newsen from nate