How many movies have Masami Yokosuka and Robert Marius acted in together?

They have worked on 1 movie together! Their first movie together was マニラ・エマニエル夫人 危険な楽園 (1993) and was their highest rated movie together. They have not worked together since マニラ・エマニエル夫人 危険な楽園 (1993).