Question: What  is a 2013 horror omnibus film made up of four episodes by four South Korean directors, that had an actor kownfor his leading roles in the television series "Shut Up Flower Boy Band" ?

Context articles: Flower Boys Next Door
Lee Chung-ah
Sung Joon
If You Were Me
Yoo Min-kyu
Kim Min-seok (actor)
Horror Stories (film)
Feathers in the Wind
Shut Up Flower Boy Band
Horror Stories 2

The series aired on tvN from January 7 to February 26, 2013 on Mondays and Tuesdays at 23:00 for 16 episodes.
 Directed by Jung Jung-hwa (who previously helmed "Flower Boy Ramyun Shop") and written by movie screenwriter Kim Eun-jung ("Gabi", "Hwang Jin-yi"), it is the third installment of cable channel tvN's "Oh!
 Boy" series of Flower Boy programming targeted at the teenage demographic.
Lee Chung-ah (born October 29, 1984) is a South Korean actress.
 She is best known for her leading roles in the movies "Temptation of Wolves" (2004) and "My Tutor Friend 2" (2007), as well as the cable drama "Flower Boy Ramen Shop" (2011).
Sung Joon (born Bang Sung-joon on July 10, 1990) is a South Korean actor and model.
 He began his entertainment career as a model, but after switching to acting he became best known for his leading roles in the television series "Shut Up Flower Boy Band" (2012), "Can We Get Married?
" (2012), "I Need Romance 3" (2014), "High Society" (2015) and "Madame Antoine" (2016).
 He also appeared in the films "Dangerously Excited" (2012), "Horror Stories 2" (2013), "Pluto" (2013) and "The Villainess" (2017).
If You Were Me is a 2003 South Korean omnibus film, comprising six short films directed by six promininent Korean directors, including Park Chan-wook.
 Commissioned by the National Human Rights Commission of Korea for ₩50 million () each, the shorts deal with discrimination in Korea and the directors were given free rein with regards to subject and style.
 The film has spawned three live-action sequels, as well as two animated films, which deal with similar themes.
Yoo Min-kyu (born September 18, 1987) is a South Korean actor.
 Yoo began working as a runway and magazine model in 2006.
 He then joined and won the audition competition "Flower Boy Casting: Oh!
 Boy" in 2011, which led to his acting debut in the television series "Shut Up Flower Boy Band" in 2012.
 In 2014, Yoo played leading roles in Kim Jho Gwangsoo's indie film "One Night" (part of the omnibus "One Night Only"), and another cable series "Be Arrogant".
Kim Min-seok (born January 24, 1990) is a South Korean actor.
 He had supporting roles in television series such as "Shut Up Flower Boy Band" (2012), "Descendants of the Sun", "Doctors" (2016) and "Defendant" (2017).
Horror Stories () is a 2012 horror omnibus film made up of four short films by five South Korean directors.
Feathers in the Wind () is a 2004 South Korean film directed by Song Il-gon.
 "Feathers in the Wind" was originally planned as a 30-minute section of a three-part omnibus film with two other directors entitled "1.3.6".
 At 73 minutes, the film exceeded the limits of the original omnibus format and was released on its own theatrically and on DVD.
Shut Up Flower Boy Band ( is a 2012 South Korean television series starring Sung Joon, Jo Bo-ah, L, Jung Eui-chul, Lee Hyun-jae, Yoo Min-kyu, and Kim Min-seok.
 It is a coming-of-age story about a high school rock band dealing with friendship, rivalry, romance and their passion for music.
 The series aired on tvN from January 30 to March 20, 2012 on Mondays and Tuesdays at 23:00 for 16 episodes.
Horror Stories 2 () is a 2013 horror omnibus film made up of four episodes by four South Korean directors.
 It screened at the Puchon International Fantastic Film Festival and Sitges Film Festival in 2013, and won the Silver Raven prize in the International Competition at the 2014 Brussels International Fantastic Film Festival.