How many movies have Shigeru Saito and Yoko Kogawa collaborated on?

They have worked on 10 movies together! Their first movie together was Beyond the Boundary: I'll Be Here – Past (2015) while their highest rated movie together was Violet Evergarden: The Movie (2020). They have not worked together since Violet Evergarden: The Movie (2020). They are most known for their animation films together.