How many movies have Toru Okawa and Yuriko Ishii collaborated on?

They have worked on 3 movies together! Their first movie together was Fullmetal Alchemist the Movie: Conqueror of Shamballa (2005) while their highest rated movie together was Ghost in the Shell: Stand Alone Complex - Solid State Society (2006). They have not worked together since Twittering Birds Never Fly: The Clouds Gather (2020). They are most known for their animation films together.