The Shivara Empire is one of the five largest empires in the entire Qingfeng Continent, and its main city, Vels, is also the largest commercial center in the continent every year, every month, every day, every moment, and people from all sides of the mainland come and go, which is very lively. However, as the saying goes, there is darkness. After the bright and beautiful day, the filth and darkness of Vels descend with the night, and the slums of Vels at night have become a completely out of law.