The new humans woke up. They did not know who they were. They saw the dry stump of the World Tree. They saw the Mechanical Sun and Moon.
"Who built this?" they asked.
They found fragments of the old world in the ash. They found a petrified giant's tooth (Brave Sun's legacy). They found a rusted iron arm (Ren's legacy). They found a black skull (Kuro's legacy).
They did not know the stories. They invented new ones. They worshiped the Iron Arm as the God of War. They worshiped the Black Skull as the God of Peace.
They began to fight over the artifacts. They began to bind the residual power in the artifacts.
History began to repeat itself.