THE IDOLM@STER MILLION THE@TER GENERATION 11 UNION!!

THE IDOLM@STER MILLION THE@TER GENERATION 11 UNION!! is a single in the THE IDOLM@STER MILLION THE@TER GENERATION series that was released on August 29, 2018 by Lantis Co., Ltd. It features the theme for THE iDOLM@STER MILLION LIVE! THEATER DAYS's first anniversary, "UNION!!". The song, "Welcome!!", will be the coupling track of the new song.

Tracklist
sung by: 765 MILLION ALLSTARS sung by: 765 MILLION ALLSTARS
 * 1) UNION!!
 * 1) Welcome!!
 * 1) UNION!! (Off Vocal)
 * 2) Welcome!! (Off Vocal)