I'll Be Holding Onto You

Kay has been in a children's home all her life and knows nothing about her real family, her favourite band Twenty Øne Pilots are the only people that keep her going in the ugly world she lives in.
One day at a meet and greet with her idols a slip of paper falls out of Tyler's pocket with Kay's name signed at the bottom of it, it was one of the letters she had written to her real family once.....
Was Kay's idol really her dad?
TRIGGER WARNING!