How many movies have Shigeru Chiba and Toshiki Inoue collaborated on?

They have worked on 3 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 Urusei Yatsura: Lum the Forever (1986). They are most known for their comedy films together.