"Back in a younger, more naive time, a god had gotten a hold of Xiao's weakness." What was Xiao's weakness? A human girl. And now, 2000 years later, her soul has been reborn in a new body. No memories from her previous life remained, save for the occasional visions of amber eyes and golden feathers. But as for Xiao? Well, centuries of demon subjugation haven't eroded his memories of her at all, only buried under the countless walls surrounding his ice-cold heart. Will she be the one who understands his sacrifice, and shine a ray of light into his dark world? ____________ Fem!Reader Note: This work is cross-posted to AO3 as well [DISCLAIMER: I do not own Genshin Impact and its characters]