About a hundred years ago, human technology had already advanced considerably, and people had developed time-space teleportation. But when they tested it, they discovered that it did not send them through time to the past or the future, as they had imagined.
Nor did it transport them from one planet to another. Instead, it sent them to a completely different world.
In that world, all weapons and equipment were as useless as scrap metal. Electronic devices and machinery were equally unusable.
Humans, who had gradually risen to the top of the food chain through their intelligence, lost every advantage they had. They were back to zero.
Yet there were ways to improve humanity's standing. Through exploration, people discovered that if they killed and ate certain creatures in this world, they could evolve rapidly. As their bodies evolved, their lifespans increased accordingly. This discovery left humanity both thrilled and astonished.
So, over the hundred years after this discovery, people flocked to the world they called the “Sanctuary of the Gods” to evolve.
