Bitter-Cold Revenge

(This is the story of an OC of mine as a Fatui Harbinger)

A young girl named Astrid Petrov grew up in the land of Sumeru. Her whole villages shunned her because her hair was different than the rest. She ran away to Sumeru City where she bet her best friend Violet. One day while they are minding there business a group of fatui agents ambush Voilet and kill her. Overcome with grief Astrid decides to join the Fatui in hope to find the killer. As she does she manages to climb the ranks to become the 10th Fatui Harbinger. Will she be able to find the killer? This is a revenge story with romance along the way, stick around to read!