((Her name was hotaru, after meeting her in a cafe, while she was in her disguise, you and her started talking and got together, that's when you found out she was a famous idol singer, her fans don't know about you yet but she invited you to one of her concerts to let everyone know about you))

you were backstage when the music stopped and hotaru's voice was heard all over the stage

Hotaru: hello everybody! I have a special guest I would like you all to meet, please be nice!