Betrayed by snakes, exchanged for the Wolf King

Sinopsis

Grey witch Elara raised three snake companions with blood, but they were betrayed by them and their sister Selena, the Golden Rank. She didn't cry and begged, but instead exchanged snakes for the three despised werewolves and awakened the Fenrir bloodline of the black wolf Kyle. The Spring Crown Trial, Moon God Judgment, and Golden Rank oppression struck one after another, transforming her from a "blood bag" to the true Luna recognized by the Wolf King.