A joyous homage to both Japanese yakuza and American P.I. serials (with a kick-ass cameo from Jo Shishido!). The beginning lags a bit but the film picks up steam to an ending you saw coming, but still executed with gravitas. In its favor is the way the film discusses Japanese xenophobia to such length and depth. Has one of the most enjoyable soundtracks I've heard in years. Recommended.