The powerhouse pairing of Gong Yoo and Song Hye Kyo in a K-drama is shaping up more and more and we have the first person to join the supporting cast. It’s idol turned actress Seolhyun as she has been cast in the drama titled Show Business. It’s from the PD of Coffee Prince and award winning screenwriter Noh Hee Kyung who has worked with Song Hye Kyo twice now first in The World We Live In and also That Winter, the Wind Blows. This drama is set in the post Korean War era when South Korea was developing quickly and shows the early rise of K-entertainment and will span a few decades.