The Takamagahara was an organization the was in a cooperative relationship with the Magic Guild, however, it was disbanded after the Wadatsumi Mass Vanish Incident. The earliest that is know about Takamagahara was that they bought the Wadatsumi land from Amanohokosaka Family after that the Magic Guild tried to crush them. There in Wadatsumi they built the Laboratory, known as Wadatsumi Laboratory. During the tempering of the Code: Embryo one of the scientist, Ryōko Kagari, realized that the Grimoire would drain the souls of the entire city of Shin-Yokosaki and stopped the tempering half-way.