The Blade and Petal Promotional poster for The Blade and Petal Also known as Sword and Flower Knife and Flower Genre Historical Romance Drama Action Written by Kwon Min-soo Directed by Kim Yong-soo Park Jin-seok Starring Kim Ok-bin Uhm Tae-woong Choi Min-soo Kim Yeong-cheol Composer(s) Park Seong-jin Country of origin South Korea Original language(s) Korean No. of episodes 20 Production Executive producer(s) Lee Geon-joon Producer(s) Yoon Jae-hyeok Production location(s) Korea Cinematography Lee Yoon-jung Kim Gyeong-ho Editor(s) Seon Han-saem Bae Young-joo Running time Wednesdays and Thursdays at 21:55 (KST) Production company(s) Love Letter KBS Media Blade and Petal SPC Release Original network Korean Broadcasting System Original release July 3 (2013-07-03) – September 5, 2013 (2013-09-05) Chronology Preceded by The Fugitive of Joseon Followed by Secret Love External links Website