How many movies have Koji Watanabe and Mutsuki Aoki collaborated on?

They have worked on 2 movies together! Their first movie together was Sword Art Online the Movie – Progressive – Aria of a Starless Night (2021) 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).