During my TL of The Silver Tower, I've come to an odd conclusion (Lore speculation and spoilers): maybe Versa is exactly what Ordowald needs to save it from the mana drought. See, the entire postgame is about ensuring the Dark Age doesn't return - the Dark Age being a time when extremely powerful monsters against which humans had no chance roamed the world.
Now, what do extremely powerful monsters need? It's why Sequel monsters are all sex-shaped and there are so few true dragons: they need a lot of mana. Could it be that by preventing the Dark Age, the Silver Dragon and Rifar's party doomed what would become Ordowald to the mana famine? Maybe the only way to set the world right is to start a new Dark Age, but with the mana-humans of modern Ordowald who can utilize the new era's mana able to stand up to what would come.
Also, Kakashi-chan's stacked in this game.