How many movies have Masaru Satō and Tadashi Sawashima collaborated on?

They have worked on 13 movies together! Their first movie together was Lord Mito: Struggle of Suke and Kaku (1961) while their highest rated movie together was Life of Hishakaku 2 (1963). They have not worked together since Kyojin-gun monogatari: Susume eikô e (1977). They are most known for their drama films together.