How many movies have Shigenori Hirozumi and Shunichiro Yoshihara collaborated on?

They have worked on 4 movies together! Their first movie together was Kabaneri of the Iron Fortress: Life That Burns (2017) while their highest rated movie together was Attack on Titan: The Roar of Awakening (2018). They have not worked together since Bubble (2022). They are most known for their animation films together.