Ko Hee-seopDirectingNo biography available.Known For5.4App the Horror2026Fan ClubNo Nerds have favorited Ko Hee-seop yet — be the first.All fan clubsFrom NerdspinFilmographyDirecting2Editing12026App the HorrorFilmDirector★ 5.42021ReplayTVDirector • 10 episodes★ 2.8