Spun off from The Idolm@ster (2011), this series follows a new group of idols working alongside the thirty-nine idols of the newly-formed 765PRO Live Theater base at 765 Productions and a producer at the 765 Theater Agency.

A girl who wants to grasp a dream she has yet to see, Mirai Kasuga. A girl who longs to become an idol, Shizuka Mogami. A girl who has yet to know what serious business is like, Tsubasa Ibuki. The brilliance of idols will guide these three to a new friend, who awaits their arrival. When 39 idols reach for the "dream" together, the brilliance of a million is born in the theater!

Mirai Kasuga, who wants to carry on a dream she has yet to see. Shizuka Mogami, who yearns to be an idol and is shaken. Tsubasa Ibuki, who does not know what she can be serious about. At 765 Production new idols gather and everyone's "dreams" will brought into brilliance at the theater. The long-awaited anime of "The IDOLM@STER Million Live!.—AniList

The original game is a Japanese idol raising simulation video game developed and managed by Bandai Namco Entertainment released on the GREE social network platform February 27, 2013 for Android and iOS platforms and for feature phones. A rhythm game titled Idolmaster Million Live. Theater Days was released on June 29, 2017. The original game ended service on March 18, 2018, leaving Theater Days as the main game centered on Million Live. An anime television series adaptation by Shirogumi is scheduled to air in October 2023.

A girl who wants to grasp a dream she has yet to see, Mirai Kasuga. A girl who longs to become an idol, Shizuka Mogami. A girl who has yet to know what serious business is like, Tsubasa Ibuki. The brilliance of idols will guide these three to a new friend, who awaits their arrival. When 39 idols reach for the "dream" together, the brilliance of a million is born in the theater.—project-imas wiki