How many movies have Akikazu Ota and Yoshinobu Nishioka collaborated on?

They have worked on 6 movies together! Their first movie together was Zatoichi and the Chest of Gold (1964) while their highest rated movie together was The Thieves' Who's Who (1966). They have not worked together since Women's Prison for Torture (1971). They are most known for their drama films together.