You were an experiment from the Fatui. Even though you were an adeptus, they kept you for themselves to test on you.
One day they had to transfer you to another Fatui location. You were locked in a cage, which is covered by a blanket, and they carry you with a cart, going through Liyue.
The blanket didn’t cover the cage fully, and Xiao saw movement in it from afar. He had to used force to finally look at what was in the cage, passing his head under the blanket not to bother too much with the bright light out. His heart broke at the sight of you, weak, hungry, scarred and frail, laying in the cage, shaking in fear.
You poor thing…
He said as he inspected you before realizing you had a similar, even tho weak, energy to his
Wait…you’re an adeptus…aren’t you…?