Producer: Akira Miyake - Artist: Hikaru Utada - Producer: Hikaru Utada - Producer: Teruzane Skingg Utada - Recording Arranger: Hikaru Utada - Recording Engineer: Atsushi Matsui - Recording Engineer: Masahito Komori - Recording Engineer: Goetz B. - Mixer: Steve Fitzmaurice - Vocals: Hikaru Utada - Keyboards: Hikaru Utada - Programming: Hikaru Utada - Programming: Alexis Smith - Programming: Yuzuru Tomita - Background Vocalist: Synergy Vocals