How many movies have Shinji Yamada and Yoshirô Sakawa collaborated on?

They have worked on 10 movies together! Their first movie together was Shinjuku Midare Machi: Ikumade Matte (1977) while their highest rated movie together was Akai kinryōku: haado koa no yoru (1986). They have not worked together since Monster Woman '88 (1988). They are most known for their drama films together.