One scene sums up its violent grandiloquence nicely: a shootout in a fireworks factory between the world's number-one hit man, O, a young slicked-back, cooler-than-a-Popsicle Japanese hipster played by model-singer-actor Takashi Sorimachi, and its number-two killer, Tok, a Chinese assassin played â with nervous giggles that echo back to Richard Widmark's old-lady killer in Kiss of Death â by Hong Kong icon Andy Lau.