The Lone Phoenix's Curse

This book has vampires, face-swapping, and a protagonist with a dual identity and personality. There isn't much focus on the CP; instead, it emphasizes the protagonist's emotional journey as they become a vampire and their path to revenge. Along the way, it also features a heartrending romance between a mermaid and her lover, one for the ages. The plot is tightly linked, and the story is full of twists and turns. If you like it, please add it to your bookshelf and give it five stars. Many thanks!