A young girl named Ange is summoned to a Sacred Land and is chosen as the Legendary Etoile, whose mission is to save the newly-born Cosmos of the Holy Beast, which has recently fallen under a crisis. With the support of nine Guardians (who have the power of nine elements), she embarks on a journey to save the dying land of the Holy Beast and to discover her true self. (Source: ANN)

Ange is now trapped in the Seijuu Universe, and cannot leave until she awakens Seijuu's Queen. In order to do this, she must gather nine new guardians. It sounds like a fairly simple task, but how can she convince these men to tear away from their own lives and protect the life of another?

Soon after transferring to Seisou Gakuin, Kanade finds the orchestra club in the middle of preparing for the National concur. Teaming up with the other members, she will improve her skills, meet new rivals and create memories for what will become an unforgettable summer... (Source: La Corda D'oro Wikia)

Hino Kahoko goes to a summer training camp to play the violin with all the members who participated in the concours. Also known as La Corda d'oro - Special Episode 26