How many movies have Kazuya Nakai and Keigo Oyamada collaborated on?

They have worked on 5 movies together! Their first movie together was Ghost in the Shell: Arise - Border 1: Ghost Pain (2013) while their highest rated movie together was Ghost in the Shell: Arise - Border 2: Ghost Whispers (2013). They have not worked together since Ghost in the Shell: The New Movie (2015). They are most known for their animation films together.