The Land of Greedy Creatures

There was a legend about the most powerful human in the mythical land. It said that this human was the last of its kind. Because its ancestors were already hunted down by the beasts that starved for power. They had been slaved and slayed, they were murdered mercilessly. One night some unknown people bragged inside a tiny house, trying to find what the legend said as the most powerful human left Carol Jade as an orphan after her parents died cruelly that night. What was the connection of her parents and the legend?