How many movies have Kumiko Watanabe and Naoki Kusumi acted in together?

They have worked on 1 movie together! Their first movie together was Crayon Shin-chan: Honeymoon Hurricane ~The Lost Hiroshi~ (2019) and was their highest rated movie together. They have not worked together since Crayon Shin-chan: Honeymoon Hurricane ~The Lost Hiroshi~ (2019).