Sympathy For Mr. Vengeance

E:
After making the highly successful Joint Security Area, Chan-wook Park gained some financial and creative freedom. Sympathy For Mr. Vengeance is the result. The first of his so-called Revenge Trilogy (Oldboy being the best of the three), it's about two men who need to take revenge - on each other.
The first act is hard to follow, perhaps because I don't speak Korean. Some time jumping. Some events hard to attach to which characters. But if you stick with it, this hard-hitting moobie pays off in spades.
I can't really give away too much, except that the young man with the green hair is deaf and he has a sister and a girlfriend. At first I thought it was only one girl. Maybe this one bit of information will help you get through the first act a little easier.
Regardless...watch it! Watch the whole trilogy! (saving Oldboy as the finale)