Griotte no Nemurihime

In the small town of Rhubarb, Layle, Citra and Elfin are three inseparable friends. Citra has the power to manipulate plants with her songs, but does not control it very well yet, and missed the exam that would have allowed her to become a Mesyaria, princess of singing, as her twin sister Rosa left to the capital for fill this role. Curious, Elfin...