Sekai Ichi HAPPY na Onna no Ko 世界一HAPPYな女の子 From the album ②℃-ute Shinsei Naru Best Album Performed by ℃-ute , Yajima Maimi , Nakajima Saki , Suzuki Airi , Okai Chisato , Hagiwara Mai No lyrics on file for this track yet.