How many movies have Fujiko F. Fujio and Yoshiaki Koizumi collaborated on?

They have worked on 1 movie together! Their first movie together was Umeboshi Denka: Uchu no Hate kara Panparopan! (1994) and was their highest rated movie together. They have not worked together since Umeboshi Denka: Uchu no Hate kara Panparopan! (1994).