Jia Jiu is a mage of Emperor Weishu's court in Yanjing. She is an academic mage, as there are no known ambient mages in Yanjing or Gyongxe. She operates through beads that hold magical powers and states of being. In 1041 KF, Jia Jiu meets Evvy and seemingly bonds with the girl over their mutual love of cats, making Evvy trust her. Although Evvy believes that Jia Jiu is respectful of ambient magic, Briar Moss doesn't trust her. Luvo later kills Jia Jiu and her soldiers by making the fortress collapse in on itself.