Cho Jin-woong played a mysterious villian in a 2014 film written by who?
Cho Jin-woong:  He is best known for his roles as Sejong's loyal bodyguard in "Deep Rooted Tree" (2011), a mobster in "" (2012), and a mysterious villain in "A Hard Day" (2014). A Hard Day:  "Take It to the End") is a 2014 South Korean crime action thriller film written and directed by Kim Seong-hun, and starring Lee Sun-kyun and Cho Jin-woong.
Kim Seong-hun