Shin Hyun-joon
He is close friends with actor Shin Hyun-joon. He noted that they would often refer to each other as brothers or even consider each other as family. He was first acquainted with Shin in the 2000 movie, "The Siren". Since then, they have become very good friends. Sometimes, they would discuss movie or drama series scripts with each other before deciding on whether to accept the offer to film the movie or series. In 2010, they reunited after their last collaboration 10 years ago, to film a comedic cop movie similar to the American movie, Rush Hour, titled "Mr. George and Bongsik".