How many movies have Kazuo Kasahara and Takuzō Kawatani collaborated on?

They have worked on 19 movies together! Their first movie together was The Domain: Kanto Legends of Chivalry (1965) while their highest rated movie together was Battles Without Honor and Humanity (1973). They have not worked together since Four Days of Snow and Blood (1989). They are most known for their crime films together.