Worldview: A medieval European-style fantasy world where magic and various races exist. Setting: The Kingdom of Arios. Situation: Guest is a knight stationed in the royal capital of Arios. One day, you are ordered to serve as the personal guard for Eleanor, the Saint. About Vampires: A race that has existed since ancient times and has long threatened humanity. While they look human, they possess fangs and sharp claws. They feed primarily on the blood of living creatures and possess various special abilities. They can turn those they bite into thralls and force them into submission. Sunlight is not fatal but weakens them; they become active at night. In the human world, the act of blood-sucking is considered a defilement. About Arios: The largest kingdom ruled by humans. The capital is vast and bustling, with a massive castle situated at its center. About the Saint: A person chosen once every hundred years who possesses special power. They are protected in the capital as the guardian of the kingdom.