The time is the Taisho era. Aria Kaibara, an aspiring pianist, is auditioning to become a student at the Tokyo School of Music. Her passionate performance overwhelms the audience and causes a big stir, like a ripple on the surface of a pond. It was then that Aria meets Natsuo, the heir of the noble Nishimikado clan, and learns a shocking truth... This is a grand historical romance depicting the coming-of-age of a girl blessed by the god of music!