1. No Doubt (Japanese Ver.) (Digital Only)
Produced by Johnny Goldstein
(Johnny Goldstein, Theron Thomas, Kasey Phillips, "hitman" bang, ARMADILLO, RANGA, danke, 조윤경, Colin (MUMW), bay(153/Joombas), 이이진, Peridot, 김수지 (라라라스튜디오), 배성현 (MUMW))

Additional production - ARMADILLO
Keyboard - Johnny Goldstein
Synthesizer - Johnny Goldstein
Bass - Johnny Goldstein
Programming - Johnny Goldstein
Background Vocals - 비오(B.O.)
Vocal Arrangement - ARMADILLO
Digital Editing - ARMADILLO, RANGA, 손유정, 김현수
Recording Engineers - 손유정, 김현수 @ HYBE Studio
Mix Engineer - Manny Marroquin at Larrabee Studios (North Hollywood, CA)
Mix Engineered by Chris Galland, Assisted by Ramiro Fernandez-Seoane


2. XO (Only If You Say Yes) (Japanese Ver.) (Digital Only)
Produced by JVKE, ZVC
(JVKE, ZVC, “hitman” bang, danke, ARMADILLO, 조윤경)

Additional Programming - ARMADILLO
Keyboard - Jacob Lawson, Zac Lawson
Synthesizer - Jacob Lawson, Zac Lawson
Bass - Jacob Lawson, Zac Lawson
Programming - Jacob Lawson, Zac Lawson
Background Vocals - Jacob Lawson, CA$HCOW, HEESEUNG
Vocal Arrangement - ARMADILLO
Digital Editing - ARMADILLO, RANGA, 김현수
Recording Engineers - 김현수, 탁현관 @ HYBE Studio
Mix Engineer - Patrizio “Teezio” Pigliapoco @ Little Bird Studios, Los Angeles (Assisted by Ignacio Portales, Federico Giordano)