How many movies have Kei Satō and Keiko Ono acted in together?

They have worked on 2 movies together! Their first movie together was Wakasama samurai torimonochō o keshō kumo (1962) while their highest rated movie together was Miyamoto Musashi: The Duel at Ichijo Temple (1964). They have not worked together since Miyamoto Musashi: The Duel at Ichijo Temple (1964).