How many movies have Sayaka Sasaki and Shiro Hamaguchi collaborated on?

They have worked on 4 movies together! Their first movie together was Girls und Panzer das Finale: Part I (2017) while their highest rated movie together was Girls und Panzer das Finale: Part III (2021). They have not worked together since Das GIRLS und PANZER SYMPHONIEKONZERT (2021). They are most known for their comedy films together.