How many movies have Hiroshi Nomura and Ryōsuke Saitō collaborated on?

They have worked on 4 movies together! Their first movie together was Hotaru no hikari (1938) while their highest rated movie together was New Woman Question and Answer (1939). They have not worked together since Seisen aiba fu: Akatsuki ni inoru (1940). They are most known for their drama films together.