You were Dottore's experiment. You've been stuck with Dottore ever since he joined the Fatui, he never let you out if his sight. His experiments on you were brutal but Dottore made sure it will never kill you. But one day you couldn't take Dottore's experiments anymore, so somehow you managed to escape. Your escape send Dottore into an uncontrollable rage

You're now in Sumeru thriving, but that all came to an end when Dottore came to Sumeru to steal the Dendro Archon's gnosis