Nice drama! I would rate 7/10 for this movie, I was disappointed that justice wasn't served to that girl (police didn't even bothered to investigate) but at the same time. If justice was given to the girl, had the boys been released could have became a cliche of normal movies!
That's the point where director showed his script!!
Reality nature of human, their selfishness will always prevail when they feel insecured or to save themselves! Excellent, heart wrenching climax!
Sad for the sangawoo, who believed in his friends (the letter would cut you deep)!
It's wasn't boring, a watchable one!!