There is one thing Astra was able to realize after all of this turns of events.
She climbed a bit and rested on a protruded rock, she looked at the night sky and sighed.
"How to love the land of the people?"
She laughed, "No wonder it was so important. In the end the Superiors aren't just watchers. They aren't simply strong but their lives have something else."
Her and Joker's predecessor used their bodies as a person of the land to help it recover.
That's what Astra was able to come up with as she kept pondering over the vision of the past where the whole place was engulfed in fire.
With that she was able to presume it that way, that what they sacrificed were the bodies that are filled with power of the elements allowing the land to recover.
That's why Silvia and the other's said that they loved the land so much they were willing to give up their chances of enjoyment in order to help the land.
