He was already sixty years old, a hero in twilight, unable to hold on much longer.
It wasn't just because of this; within the law of cause and effect recommended by Catus, the number one human form simply couldn't become the adopted heir of a grand Protector of the Realm.
Aetius's schemes over the years were not limited to this. He also incited the Huns to attack the affluent Eastern Empire, diverting disaster eastward, providing the Western Empire with breathing time. For fifteen whole years, Attila - God's Whip - did not threaten the Western Empire.
If it weren't for the Hunnic Empire needing to rely on war plunder to maintain its operation, the Eastern Empire would have already been robbed, and God's Whip - Attila might not have attacked the Western Empire.
The reason for this Hunnic westward campaign is actually quite absurd.
Because it involves a court secret.