How many movies have Mariko Akiyama and Ryuichi Hiroki collaborated on?

They have worked on 1 movie together! Their first movie together was ＮＥＷセクシーメイツ ヌケヌケフィニッシュ大狂乱 (1990) and was their highest rated movie together. They have not worked together since ＮＥＷセクシーメイツ ヌケヌケフィニッシュ大狂乱 (1990).