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 "Horror Stories 2"): 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.
Relevant evidence: No