Commitment (; lit.
 "Alumnus" or "The Graduate") is a 2013 South Korean spy thriller film starring Choi Seung-hyun (also known as T.O.P from the K-pop boyband BIGBANG).
 He plays the teenage son of an ex-North Korean agent who is tasked to kill a North Korean assassin in South Korea in order to save his younger sister played by Kim Yoo-jung.
Ha Jung-woo (born Kim Sung-hoon on March 11, 1978) is a South Korean actor, film director, screenwriter and film producer.
 His breakthrough to stardom came with the role in Na Hong-jin's serial killer film "The Chaser" (2008).
 One of the leading actors of his generation in Korean cinema, Ha Jung-woo showcased his versatility across movies from many genres: road movie "My Dear Enemy" (2008), sports film "Take Off" (2009), crime drama "The Yellow Sea" (2010), gangster saga "" (2012), romantic comedy "Love Fiction" (2012), spy thriller "The Berlin File" (2013), and action thriller "The Terror Live" (2013).
 He made his directorial debut through the comedy film "Fasten Your Seatbelt" (2013), followed by "Chronicle of a Blood Merchant" (2015).
The Chaser () is a 2008 South Korean action thriller film starring Kim Yoon-seok and Ha Jung-woo.
 It was directed by Na Hong-jin in his directorial debut.
 Inspired by real-life Korean serial killer Yoo Young-chul, the film was shot on location around Mangwon-dong in the Mapo District, Seoul.
The Handmaiden (;  "Lady" ) is a 2016 South Korean erotic psychological thriller film directed by Park Chan-wook and starring Kim Min-hee, Kim Tae-ri, Ha Jung-woo and Cho Jin-woong.
 It is inspired from the novel "Fingersmith" by Welsh writer Sarah Waters, with the setting changed from Victorian era Britain to Korea under Japanese colonial rule.
The Berlin File (; lit.
 "Berlin") is a 2013 South Korean spy action thriller film written and directed by Ryoo Seung-wan.
 Ha Jung-woo stars as a North Korean agent in Berlin who is betrayed and cut loose when a weapons deal is exposed.
 Together with his wife, a translator at the North Korean embassy in Berlin played by Jun Ji-hyun, they try to escape being purged, with Ryoo Seung-bum and Han Suk-kyu playing North and South Korean operatives on their trail.
H.I.T (), also known as Homicide Investigation Team, is a 2007 South Korean television series starring Go Hyun-jung, Ha Jung-woo, Kim Jung-min, and Yoon Ji-min.
 It aired on MBC from March 19 to May 22, 2007 on Mondays and Tuesdays at 21:55 for 20 episodes.
 A police procedural crime drama that integrated crime scene analysis with action, suspense, and romance, "H.I.T" represented a departure from the usual Korean drama subjects of love and relationships.
The Spy: Undercover Operation (; lit.
 "Spy") is a 2013 South Korean spy comedy film about an agent (Sol Kyung-gu) who is undercover in a foreign country while his wife (Moon So-ri) has no idea what he does for a living.
Fasten Your Seatbelt (; lit.
 "Rollercoaster") is a 2013 South Korean comedy film written and directed by actor Ha Jung-woo, in his directorial debut.
 The film made its world premiere at the 18th Busan International Film Festival, and was released in theaters on October 17, 2013.
Chronicle of a Blood Merchant () is a 2015 South Korean film adaptation of the bestselling 1995 Chinese novel of the same title by Yu Hua.
 The film, set in 1950s Korea, was co-written and directed by Ha Jung-woo, and he also starred alongside Ha Ji-won.
The Terror Live () is a 2013 South Korean action thriller film written and directed by Kim Byung-woo.
 It stars Ha Jung-woo as an ambitious news anchorman who monopolizes the live broadcast of a terrorist attack following the explosion of Mapo Bridge on the Han River, as the story unfolds within the narrow confines of a radio booth.

Question: Who directed the 2013 South Korean spy action thriller film which Ha Jung-woo showcased his versatility on
Answer: Ryoo Seung-wan