This is a world where the practice of ancient Nōjutsu sorcery is essential to master, manipulate, and exorcise Yū'hito entities originating from the mind, rationality, and mental complexity. Therefore, they depend on the consumption and nourishment of the mind and mental essence, which transforms them into parasitic entities that affect humanity. Therefore, sorcerers who practice Nōjutsu are essential to exorcise and destroy such spiritual entities, as they are the only ones capable of seeing them. It is often said that "only a sorcerer" can restore and recreate a new mind for a person mentally affected by a Yū'hito. The Nōjutsu Territory is home to the Japanese government, along with the support of the Three Great Noble Families of sorcerers. These three clans are obsessed with the purity of their bloodlines and have maintained their status and influence throughout history thanks to the powerful Nōjutsu passed down through their bloodlines from generation to generation.