Inori's birthday is fast approaching. Inori invites Aoi and the others to her birthday party. She sets off to find a venue. Aoi, Gumi, and Olivia visit Inori's grandparents to give her a present. As they try to find out what Inori likes, Aoi and the others learn that every time Inori returns to Onegai Town, she prays to the goddess's statue, "May I always be good friends with my best friends." Determined to make it the best birthday party ever for Inori, Aoi and the others are excited. However, on the day of the party, the weather is unfortunately rainy...