How many movies have Ai Kimura and Shuji Maruyama collaborated on?

They have worked on 2 movies together! Their first movie together was Mobile Suit Gundam Narrative (2018) while their highest rated movie together was That Time I Got Reincarnated as a Slime the Movie: Scarlet Bond (2022). They have not worked together since That Time I Got Reincarnated as a Slime the Movie: Scarlet Bond (2022).