Rise of the Evil Spirit

Elvira Eterna, a girl who grew up as a princess of the noble house of Eterna. She was not a princess who was locked up like a bird in a cage, and allowed her to go to school like a normal human. However, her normal life can only last before her destiny to become a princess arrives. In this world, every girl who bears the status of a princess will get a blessing when they reach their teens. But a few days before her birthday arrives, a classmate of Elvira who is a princess and has received a blessing is suddenly found dead horribly due to being killed by an evil spirit. She finds out that she is the only one among her classmates who has seen an evil spirit. To most people, they are monstrous creatures who seek power and indulge in bloodshed. This makes Elvira afraid that the evil spirits will also target her when she reaches her teenage age. Will after she get her blessing she will become the target of evil spirits who want to increase her strength or will there be someone who will help her to get out of a situation that put her life at stake?