Yoo Yun Suk revealed he was anxious about his performance on 'Mr. Sunshine.'
On the November 15 airing of tvN's 'Life Bar,' Yoo Yun Suk surprised everyone by revealing, "I have never been this worried and scared about my acting. I was worried that poor acting controversy might erupt."
He continued, "I called the scriptwriter before the first airing. I checked if I'm doing a good job. When I arrived at the sets, all the actors were such good actors. I was so surprised by my co-stars acting."