Tokyo Mirage Sessions #FE (2015)

The game five years prior to the game's main events: at an opera attended by a young Tsubasa and Yashiro, everyone apart from Tsubasa vanishes without trace. In the present, Itsuki encounters Tsubasa at the One of Millennium talent audition event, where she is hoping to begin her career as an idol. The compare is possessed by a hostile Mirage, and everyone in the building apart from Itsuki and Tsubasa are stripped of their Performa, while Tsubasa is taken into the Idolasphere dimension. (FE wiki)