How many movies have Kanō Ōtsuka and Kō Nishimura collaborated on?

They have worked on 5 movies together! Their first movie together was The Flesh Is Weak (1957) while their highest rated movie together was Pigs and Battleships (1961). They have not worked together since Men and War II: Land of Love and Sorrow (1971). They are most known for their drama films together.