“Please, let’s not mess with middle-aged men wearing glasses.” That was Yoon Kyung-ho’s ad-lib!

I suggested to the director, "I want to say a line that provides a sense of satisfaction at the end," and the director really loved it. He said, "It is the best line that runs through our drama. It fits this scene perfectly." So I heard he said he feels incredibly proud of it hahaha. I didn't realize it was an ad-lib; it fit so well hahaha.