He's Like a Devil (1975)

Kamon Ryou, a guitar-playing male prostitute in a decadent downtown bar of Yokohama, is a man of many secrets: he was the culprit of the unsolved "300 Million Yen Robbery" of 1968, he has a lot of nasty friends that are trying to steal the money away from him, and he is dying of a malignant brain tumor...