How many movies have Seizō Fukumoto and Takanori Oya acted in together?

They have worked on 10 movies together! Their first movie together was Battles Without Honor and Humanity: Deadly Fight in Hiroshima (1973) while their highest rated movie together was Japan's Don (1977). They have not worked together since The Shogun's Vault II (1982). They are most known for their crime films together.