Hoshi wo Ou Kodomo

If you could turn all your memories into a song, what would it resemble? Between being an exceptional student and taking care of the house alone during her mother's absence, Asuna Watase's only distraction is listening to her old crystal radio in her secret mountain hideout. One day, she accidentally tunes to a mysterious and melancholic melody, different from anything she has ever heard before. Soon after, an enigmatic boy named Shun saves her from a dangerous creature, unknowingly dragging Asuna on a long journey to a long lost land bound to surpass her very imagination, turning her once melodic life into an intricate requiem. Strange sounds in the darkness... Unearthly music from an old crystal radio... These are all the warning Asuna Watase has before a simple walk to her clubhouse catapults her into a nightmarish adventure that will take her beneath the Earth to a lost land beyond the realm of legend! Attacked by a strange monstrous creature, rescued by a mysterious stranger and pursued by a relentless enemy, Asuna finds herself enmeshed in a centuries old mystery that will bind her to a strange young defender and lead her inevitably, towards a secret that may hold the key to life itself!