 Due to an invisible contaminant called the "malediction", or simply the "curse", people who use magic too often are at risk in transforming into "Demons", or horrific, malevolent abominations of nature that become immune to ordinary weapons.The Magic Administration Bureau, also known as the Sorcery Management Bureau, is set up in the attempt to safely explore the nature of magic, officially document it, attempt to provide rational scientific explanation for it, regulate its use and police those who use magic illegally.Magic, utilized in a safe sense by the Bureau, has been used as a viable energy source by the civil service, industry, agriculture, medicine, and the military.