How many movies have Masahiro Murakami and Sumie Murakami collaborated on?

They have worked on 6 movies together! Their first movie together was Patlabor: The Movie (1989) while their highest rated movie together was Maquia: When the Promised Flower Blooms (2018). They have not worked together since BEM: BECOME HUMAN (2020). They are most known for their animation films together.