How many movies have Akiko Yajima and Wataru Takahashi collaborated on?

They have worked on 4 movies together! Their first movie together was Crayon Shin-chan: Super-Dimension! The Storm Called My Bride (2010) and was their highest rated movie together. They have not worked together since Crayon Shin-chan: Burst Serving! Kung Fu Boys ~Ramen Rebellion~ (2018). They are most known for their animation films together.