Producer: Akira Miyake - Artist: Utada Hikaru - Producer: Utada Sking Teruzane - Recording Arranger: Kei Kawano - Recording Engineer: Masaaki Ugajin - Mixer: Steve Fitzmaurice - Vocals: Utada Hikaru - Keyboards: Kei Kawano - Programming: Kei Kawano - Piano: Kei Kawano - Synthesizer Programming: Masayuki Momo - Synthesizer Programming: Takahiro Iida - Guitar: Hironori Akiyama - String Arranger: Kei Kawano