Daimajin Kanon.

Misaki Kanon is a young woman who comes to the big city with dreams of becoming a singer. At first everything goes well, she falls in love and works towards her dream. But then her boyfriend betrays her and Kanon loses her faith in people and sight of her dream. Once upon a time, as a small child in a remote mountain village where the Daimajin rests, she sang the song of prayer. Now she has to regain her song to find herself and maybe save the world too. A mysterious man from the village is searching for her so that she may help him and his comrades when the time comes.