Great movie remindes me Oldboy (2003)...
I saw this movie about month ago... I was tring to add this title to Imdb archive with no luck. anyway I would like to recommend this movie for anyone who like movies dealing with human factors/ human nature. Additionalthe acting of both Ha-kyun Shin and Hie-bong Byeon was much more than convincing.
bottom line 9/10 without a doubt