How many movies have Kôji Nanbara and Yoshi Katō acted in together?

They have worked on 12 movies together! Their first movie together was Foul Play (1955) while their highest rated movie together was The Seven Faces of Bannai Tarao, Private Eye (1956). They have not worked together since Cherry Blossoms in the Air - The Suicide Raiders - Oh, Buddies! (1970).