Anya's quiet worry about her friends becomes the entire world because that's how Aria works, it finds the profound in whether two people who care about each other can just spend time together. The movie moves like autumn leaves falling, refusing to hurry even when the stakes feel small to everyone but the characters living them. If you need plot to care, this will feel like watching paint dry. If you've learned that the smallest distances between people matter most, this is exactly what you've been waiting for.

Autumn has arrived in Neo-Venezia, and fallen leaves blanket the city. Anya, a trainee Undine at Orange Planet, is troubled to learn that her mentor Alice has not been seeing Athena, Alice's own mentor. Busy schedules have kept them apart, and Athena is saddened by it, yet Alice seems to be avoiding her for reasons no one understands. Anya enlists her fellow Undines Ai and Azusa to help bring the two together. Along the way, she comes to see something about her seniors' feelings that only her particular vantage point reveals. The film is a gentle slice of life story with fantasy and sci-fi touches.