The Music Kingdom contains musical treasures called Sound Jewels, which together produce the "Song of Blessings." The Sound Jewels are stolen by Maou, who corrupts them into Negative Jewels. Through the Dokudoku-dan, the Negative Jewels are used to turn humans into Negative Jewelers to spread a Negative Aura for Maou to use in his plan to conquer the human world by composing an evil song. In order to recover the Sound Jewels, the goddess of the Music Kingdom sends the Fairy Rhythms; Poppun, Rocky, and Kuranosuke, to the human world to seek help.
as Kanon Ichinose
as Mai Kanzaki
as Fuuka Tachibana
as Akari Shiratori
as Hikari Shiratori
as Rocky (voice)
as Kuranosuke (voice)
as Alm (voice)
as Poppun (voice)
as Sopra (voice)
as Goddess of Music
as Demon King Maou
as Uno / Sano
as Stomachpits (Kenji Mizoochi)
as Necksprain (Madame Nechigae)
as Cramps (Dr. Komuragaeri)
as Mayumi Yuzuhara
as Kojiro
as Yukie Suzuhara
as Tamagawa Erina
as Ichinose Miki
