How many movies have Shingo Yamashiro and Takeshi Kumagai acted in together?

They have worked on 4 movies together! Their first movie together was The Kingdom of Jirocho 2 (1963) while their highest rated movie together was Battles Without Honor and Humanity: Deadly Fight in Hiroshima (1973). They have not worked together since Battles Without Honor and Humanity: Proxy War (1973). They are most known for their drama films together.