How many movies have Rei Sakuma and Yoko Ono collaborated on?

They have worked on 3 movies together! Their first movie together was Go! Anpanman: Twinkle! Princess Vanilla Of Ice Cream Land (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 Go! Anpanman: Dororin and the Transformation Carnival (2022). They are most known for their animation films together.