How many movies have Atsuko Okui and Kanae Ouchi collaborated on?

They have worked on 4 movies together! Their first movie together was Natsume's Book of Friends: Ephemeral Bond (2018) while their highest rated movie together was Rascal Does Not Dream of a Dreaming Girl (2019). They have not worked together since Black Clover: Sword of the Wizard King (2023). They are most known for their animation films together.