How many movies have Masami Yuuki and Yoshiko Sakakibara collaborated on?

They have worked on 3 movies together! Their first movie together was Patlabor: The Movie (1989) while their highest rated movie together was Patlabor 2: The Movie (1993). They have not worked together since The Next Generation Patlabor: Tokyo War (2015). They are most known for their science fiction films together.