How many movies have Naoko Kosakabe and Natsumi Hioka collaborated on?

They have worked on 2 movies together! Their first movie together was Aria the Avvenire (2015) while their highest rated movie together was Delicious Party♡Precure Movie: Dreaming♡Children's Lunch! (2022). They have not worked together since Delicious Party♡Precure Movie: Dreaming♡Children's Lunch! (2022).