Sekaiichi HAPPY na Onna no Ko

C-ute-sekaiichi-happy-no-onna-no-ko-regular-cover-3464.jpg'''

Release September 9, 2011

Genre J-Pop

Format CD Single, CD DVD, Single V

Recorded 2011

Label Zetima

Producer Tsunku

°C-ute Singles Chronology Previous: Momoiro Sparkling

(2011)

Next: TBA (2011)

]] "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.

CD Tracklist

 * 1) Sekaiichi Happy na Onna no Ko (世界一HAPPYな女の子; World's Happiest Girl)
 * 2) Bokudai na Chikara wo! (僕大な力を！; My Great Force!)
 * 3) Sekaiichi Happy na Onna no ko (Instrumental)

Limited Edition A Tracklist

 * TBA

Limited Edition B Tracklist

 * TBA

Single V Tracklist

 * 1) Sekaiichi Happy na Onna no Ko (世界一HAPPYな女の子)
 * TBA
 * 1) Making of (メイキング映像)

Event V Tracklist
TBA

Members featured in this release

 * Yajima Maimi
 * Nakajima Saki
 * Suzuki Airi
 * Okai Chisato
 * Hagiwara Mai