One of the four major city-states of Agurts, Auth is renowned for engineering and heavy industry. The entire city is like a huge laboratory, full of shifting gears and mechanical architecture. Auth houses the headquarters of Laurel Inc. and is the birthplace of the Synchro exoArmor (SA). As a center for higher education, Auth University nurtured some of the brightest engineers in the Acid Rain Era, and the Auth SA Academy counts many of the world's finest SA pilots as its alumni.