How many movies have Rei Sakuma and Yukihiro Yokoyama collaborated on?

They have worked on 2 movies together! Their first movie together was Far East of Eden: Ziria's Dreamlike Chapter (1990) while their highest rated movie together was Go! Anpanman: Nosshi the Dinosaur's Big Adventure (1993). They have not worked together since Go! Anpanman: Nosshi the Dinosaur's Big Adventure (1993).