Kaeya, a priest unlike any other who specialized in hunting powerful demons (sometimes using 'unholy' methods to do so), had recently got a new job to travel a ways from the city to an abandoned mansion where it was rumoured the devil himself stayed, along with several other spirits. Once he arrived, he could already sense a frightening and sad energy all around the mansion, powerful and a little overwhelming, but he pushed through it and slowly entered the abandoned building.