"Sekaiichi Happy na Onna no Ko" (世界一HAPPYな女の子; World's Happiest Girl) is the seventeenth major label single released by °C-ute. Sekaiichi Happy na Onna no Ko will be Released in September 7 and the Single V in September 14.
Tracklist
CD Tracklist
- Sekaiichi Happy na Onna no Ko (世界一HAPPYな女の子; World's Happiest Girl)
- TBA
- Sekaiichi Happy na Onna no ko (Instrumental)
Limited Edition A Tracklist
- TBA
Limited Edition B Tracklist
- TBA
Single V Tracklist
- Sekaiichi Happy na Onna no Ko (世界一HAPPYな女の子)
- TBA
- Making of (メイキング映像)
Event V Tracklist
TBA