How many movies have Hisao Shirai and Toshio Furukawa collaborated on?

They have worked on 10 movies together! Their first movie together was Dr. Slump: Hoyoyo! Space Adventure (1982) while their highest rated movie together was Dr. Slump and Arale-chan: Hoyoyo! The Great Race Around The World (1983). They have not worked together since WXIII: Patlabor The Movie 3 (2002). They are most known for their animation films together.