How many movies have Eriko Kubokawa and Mamoru Sasaki collaborated on?

They have worked on 3 movies together! Their first movie together was Go! Anpanman: Ruby's Wish (2003) while their highest rated movie together was The Girl Who Leapt Through Time (2006). They have not worked together since The Girl Who Leapt Through Time (2006). They are most known for their animation films together.