Endless Purgatory

Legend has it that there is an ancient city on the edge of the river bed of the Bitter Land in the Alos Province. This city is called the City of Purgatory. No one knows what is in this city. The city of Purgatory is very majestic, and the eerie atmosphere makes people dare not approach it easily. There is a towering building in the center of the city. The top of the tower emits a faint white beam, facing a blue planet. People on this land call it the Devil's Star. The tall buildings surrounding the central tower in the city expand outward in steps. The buildings on the outside become smaller and smaller, and the whole city seems to be like a cone.