Black Knight Season 1, Episode 1 Episode 1 Drama IMDB 8.8 Country South Korea Duration 46 min Air Date 2023-05-12 Actors Kim Woo-bin ('5-8') Kang Yoo-seok (Sawol) Esom (Seol-a) Song Seung-heon (Ryu-seok) Kim Eui-sung Nam Kyung-eup (chairman Ryu) Jin Kyung (president) Roh Yoon-seo (Seul-a) Lee Ju-seung Lee Sang-jin Overview 5-8 investigates the construction of a new district in post-apocalyptic Korea. Sa-wol and Seul-ah experience an unexpected attack.