Question: Jo Sung-hee (born February 3, 1979) is a South Korean film director, he directed which box office hit, a 2012 South Korean fantasy romance film in which a beautiful teenage girl (Park Bo-young) is sent to a country house for her health, where she befriends and attempts to civilize a feral boy she discovers on the grounds ?

Context articles: Jeong Gi-hun
Your Wedding (film)
Won Shin-yun
Kim Sung-hoon (director)
The ESP Couple
Phantom Detective
A Werewolf Boy
Jo Sung-hee
Park Bo-young
Lee Gae-byok

Jeong Gi-hun (born 1974) is a South Korean film director and screenwriter.
 Jeong made his debut with the hit dramedy film "Goodbye Mom" (2009), which received numerous nominations and awards, including Best Director for Asian New Talent Award at the 2010 Shanghai International Film Festival.
 His second feature, the romantic drama "Love 911" (2012), was also a box office hit.
Your Wedding () is an upcoming romantic drama South Korean film that depicts the 10-year love and friendship of two people from teenage to adulthood.
 It is written and directed by Lee Seok-geun and starring Park Bo-young and Kim Young-kwang.
 The film is scheduled to be released in 2018.
Won Shin-yun (born October, 1969) is a South Korean film director.
 Won has the unique background of having been a stuntman before making his directorial horror film debut "The Wig" (2005).
 Since then, he has shown strong talent in action thriller movies through "A Bloody Aria" (2006), "Seven Days" (2007) and "The Suspect" (2013).
 "The Suspect" was a box office hit with over 4.1 million admissions.
Kim Sung-hoon (born 1974) is a South Korean film director.
 Kim debuted with the musical drama film "My Little Hero" (2013).
 His second feature was the fast-paced action film "Confidential Assignment" (2017) which starred Hyun Bin.
 A box office hit with more than 7.8 million admissions and grossing over USD56.4 million, the film was sold to 42 territories, including the U.S., the Middle East, India, the Philippines and Mongolia.
The ESP Couple () is a 2008 South Korean supernatural romance film starring Jin Goo and Park Bo-young.
 The film marks editor Kim Hyung-joo's debut as a director.
Phantom Detective (; lit.
 Detective Hong Gil-Dong: Disappeared Village) is a 2016 South Korean film noir comedy action film directed and written by Jo Sung-hee.
 Its central protagonist is a modern iteration of the classic Korean folk hero Hong Gildong.
 It was released in South Korea on May 4, 2016.
 It was released in U.S. and Canada on 20 May 2016.
A Werewolf Boy (; lit.
 "Wolf Boy") is a 2012 South Korean fantasy romance film in which a beautiful teenage girl (Park Bo-young) is sent to a country house for her health, where she befriends and attempts to civilize a feral boy (Song Joong-ki) she discovers on the grounds — but the beast inside him is constantly waiting to burst out.
Jo Sung-hee (born February 3, 1979) is a South Korean film director.
 He directed the box office hit "A Werewolf Boy" (2012).
Park Bo-young (born February 12, 1990) is a South Korean actress.
 She is best known for her roles in the hit films "Scandal Makers" (2008) and "A Werewolf Boy" (2012), and the television series "Oh My Ghostess" (2015) and "Strong Woman Do Bong-soon" (2017).
Lee Gae-byok (born September 4, 1971) is a South Korean film director and screenwriter.
 Lee debuted with the romantic-comedy "The Beast and the Beauty" (2005).
 After a 10-year break, he returned with the 2016 action-comedy film "Luck Key", a box office hit with more than 6.9 million admissions.