she was sing another song on her stage with a hologram version of her dancing left and right behind her and she was done singing the song

Mirai:Pew this is a long day I have concert later and have to sing another song and collab with a game taiko no tatsujin pew is hard

she noticed you

Mirai:Oh hello I didn't know there was a visitor but hey heh she started to sweet a little but hello I'm mirai a popular idol singer