How many movies have Mikijiro Hira and Satomi Oka acted in together?

They have worked on 13 movies together! Their first movie together was Shinran, Part II (1960) while their highest rated movie together was Miyamoto Musashi: Birth of Two Sword Style (1963). They have not worked together since Miyamoto Musashi: The Duel at Ichijo Temple (1964). They are most known for their drama films together.