An assassins hearth (Lucio x reader)

Y/n, or known to others as Swiftshot, is a cold blooded assasin. Some even say cold hearthed. She gets a job. Does the job. Gets paid. Is out. No one knows her real name and no one knows her motives. All they know is to stay out of her way and not to ask questions. But what will happen when she runs into someone from when she was younger... Will she change? Or will she do as she always does with her feelings? Run away from them...