The story of a red-haired fox who loves to listen to the piano and a fairy with a bad memory is actually not that the fairy has a bad memory but that the time is too long. The fox likes the charming world of mortals and the prosperous world, but little does he know that the immortals are coming from the prosperous world of the last days, having washed away their memories. Memory and time are always a paradox, and I think people who watch it will not be able to guess the ending.