How many movies have Nobuhiro Nagata and Satoshi Sakai collaborated on?

They have worked on 4 movies together! Their first movie together was Girls und Panzer der Film (2015) while their highest rated movie together was Sword Art Online: The Movie – Ordinal Scale (2017). They have not worked together since Fate/Grand Order Final Singularity – Grand Temple of Time: Solomon (2021). They are most known for their action films together.