The Deus.Ex.Machina Build No.1 of Japan Branch, sometimes called the DEM Research Center, is a skyscraper that is the main headquarters of the Deus.Ex.Machina Industries on Japan. It is located in the center of Tenguu City. The building was built in the DEM by the original founder of the D.E.M Industries, the building became known as one of the first large buildings in the capital, the interior has several rooms and underground laboratories for highly advanced research and technological development, building space, humanoid robots, however, behind this good propaganda, conspiracies had made Sir Isaac Ray Peram Westcott who was the Director of D.E.M Industries, the D.E.M Realizers manufactures, among other highly advanced technologies that could be considered a threat to humanity, such as the power of Inverse Spirits. They also make weapons test in living people, they use most often of their own Wizards to test new Realizers Units. The tortures applied by the soldiers and scientists in the people who were used for testing were considered inhumane.
When Tohka turned in her Inverse Form, she destroyed the building, stopping the actions of D.E.M Industries in Tenguu City for short period of time.