Children Who Chase Lost Voices: Asuna Watase

Asuna is a young girl who has been forced to grow up quickly due to the death of her father, while her mother, a nurse, works long shifts at a hospital. Asuna spends her solitary days listening to the mysterious music emanating from the cat's-whisker receiver her father gave to her as a memento, accompanied by Mimi, her little cat with strange red markings.