Personnel details were sourced from
2004 Ai's liner notes booklet.
Managerial • Ai – executive producer • Yuki Arai – co-executive producer • Kay Ichikawa – publisher • Aiichiro Kiyohara –
A&R director • Kaz Koike – co-executive producer • Toshiharu Kojima – co-executive producer • Shinki Miura – co-executive producer • Atsushi Nakaue – publisher • Kenya "Malu.k" Orita – executive producer (#15, #17) • Koichi Sakakibara – artist management • Tamotsu Suzuki – recording coordinator (#6, #16) • Akira Terabayashi – co-executive producer • Kumi Kawasumi Yoshida – publisher
Performance credits • 2Soul – instruments (#2, #9) •
Afra – human beatbox, vocals (#12) • Ai – vocals,
background vocals • Aaron Blackmon – bass (#4) •
Boy-Ken – vocals (#10) • Dave Burnett – bass (#2, #8) • Char – acoustic guitar (#6) • Kim Hanson – additional keyboard, string arrangement(#15, #17) • Daisuke Imai – instruments (#7, #11) • T. Kura – instruments (#3–#4) • Carsten Lindsberg – instruments (#15, #17) • Michico – background vocals (#3) • Wilson Montuori – guitars (#2, #8) • Royal Mirrorball Orchestra – strings (#5–#6) • Royal Mirrorball Sextet – strings (#16) •
Shirō Sagisu – keyboards (#6, #16) • James Spears – keyboard (#8) • Joachim Svare – instruments (#15, #17) • Tucker – bass, electone, guitar, keyboard, vocals (#12)
Visuals and imagery • Eito Furukubo – hair, make-up • Noriko Goto – stylist • Misato Kumamoto – art direction, design • Cassio Macambira – photographer
Technical and production • 2Soul – arrangement, production (#1–#2, #8–#9) • 813 – arrangement, production (#10, #13–#14) • Afra – production (#12) • Ai – production (#12) • Junya Endo – mixing (#11) • Akitomo Fukushima – recording assistance (#3–#4) • Bruce Gowdy – mixing assistant (#10, #14) • Daisuke Imai – arrangement, instrument recording, production (#7, #11) • Masahiro Kawagucchi – mixing (#12), mixing engineer (#6, #16), Pro Tools digital editing (#6, #16), recording engineer (#6, #16) • T. Kura – arrangement, mixing, production (#3–#4) • Yukihiro Kusuru – co-engineering, co-mixing (#7) • Carsten Lindsberg – arrangement, mixing, producer (#15, #17) • Yasuji "Yasman" Maeda – mastering, mastering engineer (#16) • Minako Nozue – assistant engineer (#6, #16) • Tetsuya Ochiai – concert master (#6, #16) • Taiji Okuda – vocal recording (#10–#12) • Kenya "Malu.k" Orita – vocal recording (#15, #17) • Shirō Sagisu – arrangement (#5–#6, #16), drum programming (#6, #16) • Tatsuya Sato – editing (#2, #8–#9), engineering (#2, #8–#9), mixing (#2, #8–#9), vocal recording (#2, #9) • Mitsuru "Boo" Shibamoto – assistant engineer (#2, #9), engineering (#15, #17), vocal recording (#8, #14) • Troy Stanton – mixing (#10, #14) • Joachim Svare – arrangement, mixing, producer (#15, #17) • Tomotaka Takehara – engineering, mixing (#7) • Tucker – production (#12) • Mineo Watanabe – recording (#3) • Haruo Yoda – production (#6, #16) ==Charts and sales==