RELENTLESS: Proceeding Eclipse.

Kado Thorne, an immortal vampire, time traveler, and thief, is feared by everybody on the island. One day, during a celebration at his eclipse, he finds himself face to face with Antonia, a master thief, one of his enemies. Kado Thorne, being surprised at her skills, decides to let Antonia go. Soon, Antonia and Kado Thorne form a secret friendship with each other while still being rivals, hiding their friendship from Nolan Chance's group. But soon, things begin to change..

(I will update this summary I swear)