Miyako is an idol and a composer. She debuted near the same time Quartet Night did, but she knew each of them prior to the group debut, meeting each during separate times in her life.
She, as an upperclassmen, is assigned as the mentor of Haruka Nanami. As she passes her days with her colleagues and underclassmen in the dormitories, Haruka and the STARISH members start to find out about Miyako's secret past. In the meantime, Miyako and Reiji, Ranmaru, Ai and Camus's relationship continues to evolve. What will happen if "friendship" turns into "love" in the strictly love-forbidden environment?
*Notice: The title has been changed from "Quartet Night and the Goddess" to "The Goddess of Music". Apologies for the inconvenience.