In the timeline where Leon and Alice met Lumina—the Swordmaiden. During that time, the history's great war was raging.
The war where the Five Calamities fought together to seize godhood. The Great Calamity War.
It was said that after the war ended, the five calamities, horrified by the destruction their greed had caused, joined hands. Accepting their fate, they split their domains and took positions in the heavens, maintaining order in the mortal world.
No one really knew where they had gone, or if they were even alive. Some believed they attained godhood, became immortal, and chose to guard the land from above.
Leon sneered inwardly as he recalled the story from one of the original Leon's memory fragments.
'Heh… guardian of the world.'