How many movies have Chieko Naniwa and Eiji Yoshikawa collaborated on?

They have worked on 6 movies together! Their first movie together was Shinran (1960) while their highest rated movie together was Miyamoto Musashi: Showdown at Hannyazaka Heights (1962). They have not worked together since Miyamoto Musashi V: Musashi vs Kojiro (1965). They are most known for their drama films together.