How many movies have Mikijiro Hira and Ryutaro Otomo acted in together?

They have worked on 9 movies together! Their first movie together was 20 Duels of Young Shingo - Part 1 (1961) while their highest rated movie together was The Great Duel (1964). They have not worked together since The Great Duel (1964). They are most known for their drama films together.