"Praying for rain" is ethnic music of multiple chorus by Rin Kagamine. the "Genesis" and "To Ancient Forest - demise of poetry" are made of the same view of the world .
The world since the days of after 500 years, "Genesis". For people who suffer from followed by drought,"priestess called the rain" who draw the blood of the "Genesis of the priestess" is singing a song to pray to God, and call the rain.
キャラクター： Kagamine Rin