How many movies have Aya Endo and Yoichi Kato collaborated on?

They have worked on 4 movies together! Their first movie together was Aikatsu! The Movie (2014) while their highest rated movie together was Yo-kai Watch: The Movie (2014). They have not worked together since Yo-kai Watch: The Movie - The Great Adventure of the Flying Whale & the Double World, Meow! (2016). They are most known for their animation films together.