How many movies have Akiko Yajima and Takumi Kitano collaborated on?

They have worked on 4 movies together! Their first movie together was Crayon Shin-chan: My Moving Story! Cactus Large Attack! (2015) while their highest rated movie together was Crayon Shin-chan: Invasion!! Alien Shiriri (2017). 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.