Velvet Hustler (1967)

Killing is easy; love is murder.

A young yakuza hitman named Goro does a job and needs to hideout away from Tokyo for a while. He hangs out with loose women and hard men and always manages to stay one step ahead of the law. In his exile, he comes under suspicion for a murder and meets the girlfriend of the murdered man. They develop a strange bond while unbeknown to Goro, another hitman is after him for the job he did in Tokyo.