How many movies have Ayumu Anzai and Saori Hayami collaborated on?

They have worked on 2 movies together! Their first movie together was anohana: The Flower We Saw That Day - The Movie (2013) while their highest rated movie together was Is It Wrong to Try to Pick Up Girls in a Dungeon?: Arrow of the Orion (2019). They have not worked together since Is It Wrong to Try to Pick Up Girls in a Dungeon?: Arrow of the Orion (2019).