What 2015 South Korean film did Bae Seong-woo star in that premiered at the 2015 Cannes Film Festival?
Bae Seong-woo:  He starred in film such as "My Love, My Bride" (2014), "Office" (2015), "" (2015) and "Inside Men" (2015). Office (2015 South Korean film): Office (오피스 ) is 2015 South Korean slasher-thriller film directed by Hong Won-chan and starring Go Ah-sung and Park Sung-woong.
Office