Personnel details were sourced from ''What's Goin' On Ai'''s liner notes booklet.
Managerial • Yuki Arai – co-executive producer • Naoshi Fujikura – head publicity and promotion • Nobuhiko Kakihara – promotion planning • Justin Kalifowitz – production coordination (#6, #10–#12) • Aiichiro Kiyohara –
A&R director • Kaz Koike – co-executive producer • Shinki Miura – co-executive producer • Hitomi Miyamoto – artwork coordination • Keiko Ohashi – Altino Music production management (#5) • Koichi Sakakibara – artist management • Sakie Sekiya – production coordination (#12) • Ellie Shibata – production coordination (#12) • Yuko Yasumoto – production coordination (#6, #10–#12)
Performance credits • Ai – vocals,
background vocals • Robbie Danzie – introduction monologue (#1) • Icedown – all instruments (#14) • The Insomniax – all instruments (#10) • Shigeki Ippon – viola (#4) • Hiroki Kashiwagi – cello (#4) • Kazunori Kumagai –
tap (#4) • Shoko Miki – viola (#4) • Koichiro Muroya – violin (#4) • Naoto – violin (#4) • Yuichi Ohno – additional keyboards (#6) •
Rain – vocals (#12) •
Shaggy – vocals (#13) •
Trey Songz – vocals (#11) •
Yalın – vocals (#13)
Visuals and imagery • Noriko Goto – stylist • Akihisa Inoue – design • Nicci Keller – photographer • Misato Kumamoto – art direction, design • Maki Morita – live stage "paparazzi" photographer • Akemi Ono – hair, make-up
Technical and production • Filthy Rich Ahee – recording (#6, #11) • John "Papa Jube" Altino – arrangement, production (#5) • Arden Altino – arrangement, production (#5) • C-murder – pre-production recording (#8–#9) • Coptic – remixing (#11) • Tom Coyne – mastering • Digga – additional remix production (#12) • DJ Watarai – arrangement, production (#4) • DJ Yutaka – arrangement, production (#8–#9) • D.O.I – mixing (#4–6, #8–#12, #14) • D/R Period – production (#6), original version arrangement (#11), original version production (#11) • Icedown – production (#14) • The Insomniax – arrangement, production (#10) • Jin – arrangement, production, strings arrangement (#4) •
JYP – original version arrangement, original version production (#12) • Hiroki Kashiwagi – head strings arrangement (#4) • Futoshi Kawashima – strings arrangement (#4) •
Martin Kierszenbaum – arrangement, production (#13) • T. Kura – arrangement, mixing, production (#1–#2, #15) • Kwon Tae Eun – original version arrangement, original version production (#12) • OQD – recording (#1–#6, #8–#10, No. 12, #14–#15) • The Orange Factory – remixing (#12) • Dave "Hard-Drive" Pensato – mixing (#13) • Shingo S. – keyboard arrangement (#8) • Kaori Sawada – keyboard arrangement (#9) • Brian Stanley – mixing (#12) • Tony Ugval – recording (#13) ==Charts==