Cullen Lancaster

A lady belonging to the town's vigilante corps. Teasing the main character is one of her favorite pastimes. She has been taking care of the main character since a long time ago, and continues to act as everyone's older sister. She is also researching the "disaster" that occurred at some point in the past, and continues to investigate the mystery of the vampires that terrorized the world. "That might mean a lonely battle. Can you do this?"