After Gerand Darmoor had risen to status of Transcendent of Life, he stormed Chronica's sanctuary and asked for cooperation in wiping out all of Grandis. Chronica refused so Darmoor stole their power. When Darmoor used Chronica's powers, spacetime was warped and resulted in the creation of Interdimensional Portals throughout Grandis, including one in the Great Temple Interior of Pantheon.
According to Fenelle, Chronica has been listed as both a male and female. This could be a translation error.