A special commemorating the 10th anniversary of the THE IDOLM@STER Cinderella Girls franchise. The anime features all 190 idols from the series.

Note: A 6-minute preview "Celebration Animation" of ETERNITY MEMORIES was released on November 28, 2021, first unveiled during Day 2 of "THE IDOLM@STER CINDERELLA GIRLS 10th ANNIVERSARY M@GICAL WONDERLAND TOUR!!!: Celebration Land" live concert.

The video was reuploaded on September 7, 2022 onto the IDOLM@STER Channel, correcting spelling, omissions, and credits on the initial upload that was on YouTube.