How many movies have Hiroki Yasumoto and Nanako Ninomiya collaborated on?

They have worked on 4 movies together! Their first movie together was Sword Art Online: The Movie - Ordinal Scale (2017) while their highest rated movie together was Donten: Laughing Under the Clouds - Gaiden: Chapter 3 - Conspiracy of the Military (2018). They have not worked together since Fate/Grand Order the Movie: Divine Realm of the Round Table: Camelot Wandering; Agateram (2020). They are most known for their fantasy films together.