Osmanthus (TWST X F!Zhongli Mc)

Morax once had a twin sister, but she disappeared after the cataclysm, along with her little Adeptus. Over time, the mortals of Liyue forgot of her existence, and all who remembered thought her to be long dead, all but one, her brother Morax, who could still feel the pulse of her heart somewhere. Where had she gone? And why hadn't she returned?