art direction, design Masaru Nakagawa
directed by Katsutoshi Yasuhara
mastered by Yuka Koizumi
photography by Takeshi Hanzawa
Phonographic Copyright (p) Avex Entertainment Inc.
Copyright (c) Avex Entertainment Inc.
Manufactured By Avex Marketing Inc.
Distributed By Avex Marketing Inc.
- 3rd Single of TRICK Project.
- If...!? was inspired and sampled from the song TRICK from the album T released on 1/2008

Junsu credited as Junsu From 東方神起.
Barcode: 4 988064 458592
Rights Society: JASRAC