How many movies have Eiji Wakamatsu and Rie Sugiyama collaborated on?

They have worked on 2 movies together! Their first movie together was Fate/Grand Order the Movie: Divine Realm of the Round Table: Camelot Wandering; Agateram (2020) while their highest rated movie together was Mobile Suit Gundam Hathaway (2021). They have not worked together since Mobile Suit Gundam Hathaway (2021).