How many movies have Yasumasa Koyama and Yui Ushio collaborated on?

They have worked on 2 movies together! Their first movie together was Is It Wrong to Try to Pick Up Girls in a Dungeon?: Arrow of the Orion (2019) while their highest rated movie together was Rascal Does Not Dream of a Dreaming Girl (2019). They have not worked together since Rascal Does Not Dream of a Dreaming Girl (2019).