Sung Yong-ilDirecting • South KoreaSung Yong-il (성용일) is a South Korean director.Known For8.0Duty After School20237.7Class of Lies20195.7Dr. Frost20143.0Fighter Choi Kang-soon2018Fan ClubNo Nerds have favorited Sung Yong-il yet — be the first.All fan clubsFrom NerdspinFilmographyDirecting42023Duty After SchoolTVDirector • 10 episodes★ 8.02019Class of LiesTVDirector • 16 episodes★ 7.72018Fighter Choi Kang-soonFilmDirector★ 3.02014Dr. FrostTVDirector • 10 episodes★ 5.7
