From project-imas.com wiki
Ion Tail Image (イオンテイルイマージュ Ion Teiru Imaaju) is a STARRY costume that first appeared in the THE iDOLM@STER 2. It has made subsequent appearances in the following 2nd Vision games.
|Costumes of THE iDOLM@STER series|
|First Vision and |
|Second Vision |