Sprite

One day, Yukiko, Kiriko and Miki notice something strange: black snow falling from the sky. Later on, on their way to a night of karaoke, the girls make a stop at the apartment of Yukiko's reclusive uncle to bring him groceries – and that's when their terror begins. For after a dark liquid devours the entire city below, Yukiko, her uncle, her friends, and a mysterious group of children will discover exactly what's happened to the world as they know it...