How many movies have Shōhei Osada and Taro Yamaguchi acted in together?

They have worked on 1 movie together! Their first movie together was Crayon Shin-chan: Shrouded in Mystery! The Flowers of Tenkazu Academy (2021) and was their highest rated movie together. They have not worked together since Crayon Shin-chan: Shrouded in Mystery! The Flowers of Tenkazu Academy (2021).