How many movies have Hideaki Hatta and Naoko Yamada collaborated on?

They have worked on 5 movies together! Their first movie together was Munto 2: Beyond the Walls of Time (2005) while their highest rated movie together was The Last War of the Heavenliods and Akutoliods (2009). They have not worked together since A Silent Voice: The Movie (2016). They are most known for their animation films together.