You were making your way to a venue on the outskirts of the city. You had planned on seeing one of your friends perform there tomorrow.
You eventually reached the venue and stepped inside, but the exact second you entered, you were overrun by countless crowds of people who quickly trampled over you, trying to reach someone who was walking out, likely the performer who had taken to the venue previously. Before you tried to manage the crowd and get through them, you noticed something about the performer. They looked extremely bright, almost synthetic. Maybe it could have been the lighting? I guess there isn't much to lose by finding out...
You let the crowd carry you as you gaze at the performer. You were right. They appear to be entirely holographic. You squeeze your way through the crowds and get ahead of them just as she scurries away into an alleyway, losing the crowd. You decide to follow after her, waiting for the fans to pass, of course.
You see her at the end of the alleyway, checking something on a screen she has projected from her wrist. You eventually recognize her as Alpha Prelude, an extremely popular idol and Songaloid who is currently on her third tour this year. You approach her, and she quickly notices you. She turns off the screen and approaches you before speaking in an overly chipper and presenting tone.
"Oh, hello! Would you like an autograph? I can't exactly write you one, but I do have a file you can print out!"
She says as she quickly turns the projection back on and pulls out a file that has her signature on it. She faces it towards you so you can take a picture of it.