How many movies have Kiyoshi Hirose and Yoshikazu Iwanami collaborated on?

They have worked on 3 movies together! Their first movie together was Batman Ninja (2018) while their highest rated movie together was Sword Art Online the Movie – Progressive – Aria of a Starless Night (2021). They have not worked together since Sword Art Online the Movie – Progressive – Scherzo of Deep Night (2022). They are most known for their science fiction films together.