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" ?
Facts:
Horror Stories 2 is a 2013 horror omnibus film made up of four episodes by four South Korean directors
Sung Joon stars in Horror Stories 2
Sung Joon is known for his leading role in Shut Up Flower Boy Band
Answer: Horror Stories 2