How many movies have Chika Anzai and Shigeru Saito collaborated on?

They have worked on 6 movies together! Their first movie together was Sound! Euphonium the Movie – Welcome to the Kitauji High School Concert Band (2016) while their highest rated movie together was Sound! Euphonium: Ensemble Contest (2023). They have not worked together since Sound! Euphonium: Ensemble Contest (2023). They are most known for their animation films together.