Fantasy Giant City

Disclaimer: There is no protagonist in this work, and there is no interesting point in this work. When the great western empire was divided into three by his foolish descendants, all the tribes in the far north united to establish an alliance, the empire in the east reappeared, and the two barbaric kingdoms in the south were ambitious. Who will unify the continent and gain access to the illusory giant city? Who will be the Lord of the Blood Crown on the illusory giant city? Will it be the end of everything after all this is done?