Not that Same River

For it is not the same river much like they are not the same one. And as Perseus gazes, waits, and hopes, they change with the flow of time. But that's the thing, the Gods don't change, they stubbornly cling to their thrones. But as the centuries flow, so does patience, and if they won't change by will... well, it's not the first time they've waged a war. Female!Powerful!Aro!Percy