How many movies have Haruna Gohzu and Ichiro Okouchi collaborated on?

They have worked on 4 movies together! Their first movie together was Code Geass: Akito the Exiled 2: The Wyvern Divided (2013) while their highest rated movie together was Sing a Bit of Harmony (2021). They have not worked together since Sing a Bit of Harmony (2021). They are most known for their animation films together.