Episode 19 S01 E19

Uhm Tae-woong (as Kim Sun-woo) Lee Jun-hyuk (as Lee Jang-il) Lee Bo-young (as Han Ji-won) Im Jung-eun (as Choi Soo-mi) Kim Yeong-cheol (as Jin No-shik) Lee Won-jong (as Lee Yong-bae) Lee Jae-yong (as Choi Kwang-chun) Cha Hwa-yeon (as Ma Hee-jung) Park Se-young (as young Soo-mi) Lee Hyun-woo (as teenage Sun-woo) Gyeong Su-jin (as young Han Ji-won) Yim Si-wan (as teenage Jang-il) Jo Hee-bong (as Mr. Koon) Kim Hye-eun (as Park Yoon-joo)

revenge