Underworld is the name of a land that is in this world and is divided into several empires, various types of races that live on the land of the Underworld. One of them is the Dragon race. According to the races in the Underworld, the Dragon race is recognized as the most powerful race without equal and is the guardian of several empires in the Underworld.

Currently there are four Dragons who have the task of maintaining the balance of the Underworld and have their own elements and nicknames.

Eastern empire Fire dragon [Amaru],

Northern empire Ice Dragon [Aurora],

Southern Empire Water dragon [Levia],

Western Empire Storm Dragon [Ryu],

These guardian dragons have a special nickname given by other races that live in the land of the Underworld, the nickname is Lord Dragon which means giant dragon or ruler dragon.

Among the existing empires, the Western empire is the largest and currently there is a Human race kingdom called the Souldown kingdom which has existed for approximately 200 years under the protection of [Ryu] the Storm Dragon, and gave orders to one of the Humans named Varvatos Greyrat to become king in the kingdom of Souldown.

One morning, when dawn was breaking and the cold air was still blowing fresh. The sun radiated its warm rays and then entered through the leaves of the trees and touched the land in the Western Empire, precisely in the kingdom of the Human race, the kingdom of Souldown. However, people in this kingdom are already getting ready to do part-time work, small children aged seven to eight years are running around with their friends with innocent faces until happy smiles are clearly visible, traders are busy preparing their merchandise. reflects a kingdom full of peace and prosperity.