BLACK RAIN (1989)

When a yakuza hit man named Sato is arrested in New York, he's extradited to Osaka to face trial, with NYPD detectives Nick Conklin and Charlie Vincent as his escorts. When Sato escapes upon arrival in Osaka, the detectives remain to hunt him down, under the supervision of "Mas" Masumoto, a by-the-book Japanese detective, who is their only guide to a culture in which the two Americans are wholly lost.