How many movies have Shinichi Toukairin and Yoshimasa Iiyama collaborated on?

They have worked on 3 movies together! Their first movie together was Doraemon: Nobita's Little Star Wars (1985) while their highest rated movie together was Doraemon: Nobita and the Tin Labyrinth (1993). They have not worked together since Doraemon: Nobita and the Tin Labyrinth (1993). They are most known for their animation films together.