How many movies have Koji Tanaka and Naoki Arakawa collaborated on?

They have worked on 8 movies together! Their first movie together was Ghost in the Shell: Stand Alone Complex - Solid State Society (2007) and was their highest rated movie together. They have not worked together since Fate/Grand Order the Movie: Divine Realm Of The Round Table: Camelot Paladin; Agateram (2021). They are most known for their animation films together.