How many movies have Miki Narahashi and Takafumi Koshi collaborated on?

They have worked on 2 movies together! Their first movie together was Crayon Shin-chan: Honeymoon Hurricane ~The Lost Hiroshi~ (2019) while their highest rated movie together was Crayon Shin-chan: Shrouded in Mystery! The Flowers of Tenkazu Academy (2021). They have not worked together since Crayon Shin-chan: Shrouded in Mystery! The Flowers of Tenkazu Academy (2021).