Ensemble Stars! (あんさんぶるスターズ!, Ansanburu Sutāzu!) is a Japanese multimedia project made by Happy Elements. It was first released as a Mobile Japanese Card Collecting Game)released on Google Play on April 28, 2015 and on the App Store on May 1, 2015. An anime adaptation by David Production premiered on July 7, 2019.
Our protagonist is a new female student in the second year transfers to Yumenosaki Academy, an all-boys school famous for creating popular performing units until her transfer to start studying in the producer course. Facing the fact that the school is not what it seems to be, she decided to help a group unit who wanted to rebel against the school's Unit system.