Bullet Wound (1969)

Interesting, bloody counter-espionage thriller set in 1969 Tokyo during violent, anti US student protests. Yuzo Kayama is an American-Japanese operative working for the US to uncover an arms deal between an American seller and Chinese communists, and to take out both parties. After almost getting assassinated himself, he takes a wounded civilian (Kiwako Taichi) with him despite living in a world where no one can be trusted.