How many movies have Minoru Maeda and Taku Izumi collaborated on?

They have worked on 7 movies together! Their first movie together was Go! Anpanman: The Shining Star's Tear (1989) while their highest rated movie together was Go! Anpanman: Purun, The Soap Bubble (2007). They have not worked together since Go! Anpanman: Dororin and the Transformation Carnival (2022). They are most known for their animation films together.