Nurturing Humanity Novel

In the early tribal farming era, the vast and uncharted world presented ancient peoples with astonishing miracles. Towering ten-thousand-foot giants and colossal intelligent beasts roamed, devastating the landscape. For centuries, humanity battled these threats, ultimately forging the Sumerian civilization. However, their hard-won peace was shattered by the sudden descent of a wise giant. This colossal being trampled mountains, rivers, and annihilated the entire nation, causing cities to crumble. Was this divine condemnation? The giant declared humanity to be mere ants in its yard, casually dismissive of their existence. To manage them, the giant establishes a sandbox, a contained base for its farmland. Within this sandbox, the giant intends to shepherd the human race and various worlds.