How many movies have Teruo Tanaka and Yōko Matsuyama collaborated on?

They have worked on 4 movies together! Their first movie together was Crimson Bat, the Blind Swordswoman (1969) while their highest rated movie together was Crimson Bat - Oichi: Wanted, Dead or Alive (1970). They have not worked together since Crimson Bat - Oichi: Wanted, Dead or Alive (1970). They are most known for their adventure films together.