How many movies have Katsuya Yoshii and Yuki Kaji collaborated on?

They have worked on 2 movies together! Their first movie together was Donten: Laughing Under the Clouds - Gaiden: Chapter 2 - The Tragedy of Fuuma Ninja Tribe (2018) while their highest rated movie together was My Hero Academia: Heroes Rising (2019). They have not worked together since My Hero Academia: Heroes Rising (2019).