Celestial Method

Celestial Method is a 13-episode Japanese anime television series. Nonoka Komiya is a girl who once lived in Lake Kiriya City, based on Lake Tōya in Hokkaido, where she met a blue-haired girl named Noel. Seven years later, Nonoka returns to the city, which now has a mysterious saucer floating above it, and reunites with Noel, who promises to grant her wish.