Siwan revealed why he's jealous of 'The Merciless' co-star Seol Kyung Kyu.
SEE ALSO: Siwan's upcoming film 'The Merciless' gets invited to the '2017 Cannes Film Festival'!
On the April 22nd installment of 'Entertainment Relay', Siwan talked about her experience filming the movie, saying, "When I filmed 'The Merciless', I didn't know 40% of the process. I didn't know much during 'The Attorney', but I didn't know what an invitation to the Cannes Film Festival meant either. I'm looking forward to how monumental this movie will be to me."