How many movies have Mamoru Oshii and Shin Unozawa 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 Patlabor 2: The Movie (1993). They are most known for their mystery films together.