How many movies have Kenzô Masaoka and Yasuji Murata collaborated on?

They have worked on 1 movie together! Their first movie together was The Roots of Japanese Anime Until the End of WWII: 1930-1942 (2008) and was their highest rated movie together. They have not worked together since The Roots of Japanese Anime Until the End of WWII: 1930-1942 (2008).