Which series did Kim Ji-won star in first, Gap-dong or The Heirs?
Gap-dong Gap-dong () is a 2014 South Korean television series starring Yoon Sang-hyun, Sung Dong-il, Kim Min-jung, Kim Ji-won and Lee Joon. It aired on cable channel tvN from April 11 to June 14, 2014 on Fridays and Saturdays at 20:40 for 20 episodes.
Gong Yoo Gong Ji-chul (; born July 10, 1979), better known by his stage name Gong Yoo (), is a South Korean actor. He is best known for his roles in television dramas "The 1st Shop of Coffee Prince" (2007) and "" (2016-2017), and the films "Silenced" (2011), "The Age of Shadows" (2016), and "Train to Busan" (2016).