Producer: Akira Miyake - Artist: Hikaru Utada - Producer: Teruzane Skingg Utada - Recording Arranger: Akira Nishihira - Co-Arranger: Yuichiro Honda - Recording Engineer: Masashi Kudo - Recording Engineer: Masaaki Ugajin - Recording Engineer: Goh Hotoda - Mixer: Steve Fitzmaurice - Vocals: Hikaru Utada - Keyboards: Akira Nishihira - Programming: Akira Nishihira - Synthesizer Programming: Nobuhiko Nakayama - Programming: Yutaka Nakamura - Guitar: Yuji Toriyama - Finger Clicking: Skingg - Additional Keyboards: Yuichiro Honda - Additional Keyboards: Philippe Saisse