How many movies have Ai Kayano and Nobunori Niwa collaborated on?

They have worked on 3 movies together! Their first movie together was Ghost in the Shell: Arise - Border 4: Ghost Stands Alone (2014) and was their highest rated movie together. They have not worked together since Code Geass: Akito the Exiled 5: To Beloved Ones (2016). They are most known for their animation films together.