Snow is falling, konko.
Note: Konko is the sound of falling snow and hail in JapaneseAren't you enjoying this a bit too much?Kaguya is happily running around the garden.Falling, fallingFalling without stopping.Kaguya is curled up inside the kotasu.Hail(stone) is falling, konko.What Kaguya's singing is in fact made up lyrics to a song named Yuki (雪). If you are interested, you can check this link:
https://www.youtube.com/watch?v=ZAyS5jntwz8