How many movies have Satoshi Sakai and Tomokazu Seki collaborated on?

They have worked on 5 movies together! Their first movie together was One Piece Film: GOLD (2016) while their highest rated movie together was Yo-kai Watch Shadowside: Resurrection of the Demon King (2017). They have not worked together since Fate/Grand Order Final Singularity – Grand Temple of Time: Solomon (2021). They are most known for their adventure films together.