It is the late 26th century. Earth is recovering from a catastrophic explosion that exterminated the majority of the population centuries ago and made most of the surface uninhabitable due to unearthly weather conditions.
In the 2400s, mankind begins to terraform the planet Mars. Giant corporations, sponsored by the World Government on Earth, initiate huge projects to raise the temperature, the oxygen level, and the ocean coverage until the environment is habitable.
Greetings, mortal! You have ascended into the divine realms, and here, among the celestial islands, your mettle shall be tested with the utmost rigor. Only the mightiest heroes shall pass all challenges and craft their own destiny, rising to become a demigod.