Long ago 5 races came to Earth: The Cruel Zinthar, The Power hungry Rajathar, The Lustful Godathar, The horrific Mönthar, and The Evil Livéathar. The Tharic races came seeking resources and at the end of the 20th century the Zinthar reigned supreme having won several hidden wars against the other races. By the end of the 2010s, they conquered our world and destroyed our great monuments and cities. Their ruler, a Tyrannical Emperor, has destroyed man with great ferocity and force. Some remain, but man's numbers dwindle.
The Zinthar colonized the Americas which had been reverted back to their frontier like ways dangerous and unknown like it was millennia ago they built a monument to their deities and their Kaiser who destroyed man and his monuments.
The Livéathar conquered Russia and China and everything in between, however a chunk of them deflected and went to Northern Japan where they founded a Confederacy built upon the dangerous ideas and principles the Livéathar warlords followed centuries later the Japanese Leaper Empire fell to the blade of the Zintharic Empire.
The Rajathar conquered the middle east and began the Rajatharian Silk trade which still holds strong to this day they still feeble and weak from the Great Rajathar war chose to ally with the Zinthar some plot rebellion others business.
The Gödathar inhabited Greece and parts of Eastern Africa where they found economy in the mining and selling of many precious gems and metals finding monopoly in a land where man couldn't.
The Mönthar became outlaws in the many unearthly Empires. They raped and murdered, they stole and lied so they could get by but to no avail for their damnation would come soon. A disease not from a virus or plague but a disease from their impure inbred genes.
And Finally the Celestials who found home in the cradle of mankind where they slowly dwindled for the greater Empires that surrounded them slowly lowered their numbers so these humanoids escaped to the Americas where they now fight the mighty Zinthar Empire cruelty and Corruption now scar the once pure Empire.