Mr. Vengeance is the first installment in the Revenge Trilogy, and it certainly sets a good foundation for the films to come.
The film opens with a somewhat trite/cliched storyline (brother needs to save dying sister), but the means to the end is where this film will grab you.
I you are solely buying this film for its "shock" value (which would be unfortunate, as the cinematography is excellent), you will be happy to know that this flick does have its share of punctured arteries, sliced ankles and...uh...err...pools of urine. YES..!!!
However, keep in mind that these violent events will not be widespread -- they are sporadic at best and only used out of necessity for the main character(s).
In terms of tone and pacing, the film does move at slow pace. This is good in that it will evoke more emotion toward the characters...but you will not feel the "rush" that normally comes with a Miike, Noe, or Tarrentino film. Once again, this is not OLDBOY.
But nonetheless...if you like "these kinds" of movies, overall Mr. Vengeance will not leave you feeling like your money was wasted. Plus you get a bonuse disc (35 mins) of other Asian releases satisfy your hunger for more.
I only gave this film a 4-star rating because of the unavoidable comparison to OLDBOY...a film that will own your soul.
I hope this helps...
DIONYSUS JONEZ IS THE FUTURE..!!!