How many movies have Chūji Kinoshita and Kazuya Kosaka collaborated on?

They have worked on 6 movies together! Their first movie together was Nitōhei monogatari: Shindara kami-sama no maki (1958) while their highest rated movie together was The Eternal Rainbow (1958). They have not worked together since Oh, My Son! (1979). They are most known for their drama films together.