How many movies have Eiji Arai and Naoyuki Onda collaborated on?

They have worked on 5 movies together! Their first movie together was Psycho-Pass: The Movie (2015) while their highest rated movie together was Psycho-Pass: Sinners of the System - Case.3 On the Other Side of Love and Hate (2019). They have not worked together since Psycho-Pass: Providence (2023). They are most known for their animation films together.