Doctor Cha's Characters Today, we will learn more about the characters of JTBC's Saturday-Sunday drama "Dr. Cha Jung-sook," which will air from April 15, 2023. The Korean drama "Dr. Cha Jung-sook" will air in 16 episodes for 70 minutes until June 4, 2023. The main characters in "Dr. Cha Jung-sook" were Uhm Jung-hwa, Kim Byung-chul, Myung Se-bin, and Min Woo-hyuk: Directed by Kim Dae-jin and writ..