A mysterious woman appears in front of Otaro Dojima. The mysterious woman has a pale face with red lips. She kisses him and he dies, but the next moment he regains consciousness. He realizes he is now seven days in the past. The mysterious woman also follows him. Due to her kiss, Otaro Dojima dies and goes back to the past over and over again.
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.
In 1930 and as a young child, Tsuneko Kohashi lives at Enshu in Shizuoka Prefecture. She has a happy life with her parents and two younger sisters. Things change after her father dies from tuberculosis. Her father asked Tsuneko Kohashi to take care of the family in his place. Due to financial difficulties, her mother Kimiko decides to move the family to Tokyo where Tsuneko's grandmother lives.