How many movies have Fumiyasu Saito and Otaka Hamana collaborated on?

They have worked on 7 movies together! Their first movie together was Doraemon: Nobita and the Knights on Dinosaurs (1987) while their highest rated movie together was Doraemon: Nobita's Three Visionary Swordsmen (1994). They have not worked together since Doraemon: Nobita's Three Visionary Swordsmen (1994). They are most known for their family films together.