How many movies have Hiroki Touchi and Yoshikazu Iwanami collaborated on?

They have worked on 8 movies together! Their first movie together was The Garden of Sinners: A Study in Murder (Part 1) (2007) while their highest rated movie together was The Garden of Sinners: Paradox Spiral (2008). They have not worked together since Psycho-Pass: Providence (2023). They are most known for their animation films together.