How many movies have Etsuko Abe and Sagako Itakura collaborated on?

They have worked on 9 movies together! Their first movie together was Boruto: Naruto the Movie (2015) while their highest rated movie together was Free! the Final Stroke The First Volume (2021). They have not worked together since Free! the Final Stroke The First Volume (2021). They are most known for their animation films together.