How many movies have Joji Oka and Kensaku Hara acted in together?

They have worked on 8 movies together! Their first movie together was 旗本退屈男　八百八丁罷り通る (1953) while their highest rated movie together was Sasaki Kojiro, Part 2 (1957). They have not worked together since Hanjiro of Kusama: Bird of Passage (1960). They are most known for their drama films together.