Kang Jae-min as Shin Sun-woo (ep. 9,10) Jung Woo-young as Lee Young-rak (ep. 9,10) Choi Young-woo as Jeon Du-yeop (ep. 10) Kim Do-kyung as Ha Yoon-woo (ep. 10) Character appearances Episodes Season 1 (2010) Season 2 (2011) Season 3 (2012) Season 4 (2014) Season 5: Reboot (2018-2019) International broadcast The first three seasons aired in Japan on BS-Japan, and the fourth season aired on DATV starting from December 16, 2014. Notes References External links Quiz of God – Season 3 official website Quiz of God – Season 4 official website Quiz of God – Season 5 (Reboot) official website OCN television dramas Korean-language television shows 2010 South Korean television series debuts South Korean medical television series