In the late century, Blue Star civilization entered an unprecedented era, but natural disasters also followed.
Tsunami...
Earthquake...
Volcano...
Hurricane...
In the face of natural disasters, human beings are so insignificant, and the survivors wisely form a world federation. Blue Star has been temporarily repaired, and high-level civilization has been restored quickly, but hidden dangers are always brewing.
For the stability and prosperity of the era, heroes entered the world.
