How many movies have Hiroko Yaguchi and Yui Ishikawa collaborated on?

They have worked on 2 movies together! Their first movie together was Aikatsu! The Movie (2014) while their highest rated movie together was Aikatsu! 10th Story: Starway to the Future (2023). They have not worked together since Aikatsu! 10th Story: Starway to the Future (2023).