How many movies have Hochu Otsuka and Yoshitaka Sato collaborated on?

They have worked on 4 movies together! Their first movie together was Tiger & Bunny: The Rising (2014) while their highest rated movie together was Gintama: The Very Final (2021). They have not worked together since That Time I Got Reincarnated as a Slime the Movie: Scarlet Bond (2022). They are most known for their animation films together.