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" ?
Sentence (from "Sung Joon"): 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?
Relevant evidence: Yes