"The noble pride you take is a curse; everyone in your pack will end up being alone to death with no descendant. Your pack is going to be an old history." Patricia is a 16-year-old high school student. She has no memories of her parents and has been raised by her aunt. Like most people, Patricia goes unnoticed in high school. Until one day, a transfer student named Alex arrives in her class. He is tall, handsome, and has unforgettable emerald, green eyes. Alex quickly becomes the center of attention at school, but he doesn't seem to care about it. Patricia notices that Alex is always quietly observing her and deliberately getting closer to her. Just as their relationship is about to progress further, the small town where Patricia lives experiences unexplained attacks. Sheep on the farms are found with their throats slit and drained of blood overnight, and Patricia's neighbor is also attacked during the night. Finally, one night, the appearance of a mysterious visitor completely shatters Patricia's normal life. Her family history, the whereabouts of her parents, and Alex's identity... all of these answers will be revealed.