Imissmyoldaccount
After the Great Deluge, Earth's oceans swallowed over 85% of the planet's landmass, raising sea levels by more than 240 meters. Entire mountain ranges became islands, while cities such as New York, Tokyo, Jakarta, Shanghai, and London disappeared beneath kilometers of seawater. Humanity abandoned traditional nations, instead forming powerful maritime blocs built around colossal floating fortress-cities known as Aecor Arca and sprawling abyssal colonies anchored to the ocean floor.
The greatest remaining resource lies within the Abyssal Belt, a chain of ultra-deep ocean trenches stretching across the Pacific. Buried beneath these trenches are deposits of Poseidom, an exotic mineral capable of powering mech , which called by the name Mobile Suits, for decades . Control of these crystals means control of civilization itself. And that why the first wave of war between the remaining civilizations erupt , the 'Ira liberorum Poseidonis', open a new era of finding, surviving , and fighting.