How many movies have Kenzo Koizumi and Toshiyuki Honda collaborated on?

They have worked on 2 movies together! Their first movie together was Doraemon: Nobita and the Birth of Japan (1989) while their highest rated movie together was Doraemon: Nobita and the Kingdom of Clouds (1992). They have not worked together since Doraemon: Nobita and the Kingdom of Clouds (1992).