How many movies have Miyoko Shikibu and Miyuki Sawashiro collaborated on?

They have worked on 6 movies together! Their first movie together was Library War: The Wings Of Revolution (2012) while their highest rated movie together was Psycho-Pass: The Movie (2015). They have not worked together since Psycho-Pass: Sinners of the System - Case.2 First Guardian (2019). They are most known for their science fiction films together.