How many movies have Rin Kawai and Shinichiro Watanabe collaborated on?

They have worked on 2 movies together! Their first movie together was Osamekamaijo The Art Of Sexual Love In The Edo Period 36 Kind Guides (2011) and was their highest rated movie together. They have not worked together since Osamekamaijo The Art of Sexual Love in the Edo Period Technique Guide (2011).