How many movies have Eiji Okabe and Reiko Mutoh collaborated on?

They have worked on 3 movies together! Their first movie together was Attack No. 1 (1970) while their highest rated movie together was Attack No. 1 - Tear Rotation Receive (1970). They have not worked together since Baseball Mad Poem - Northern Wolf, South Tiger (1979). They are most known for their drama films together.