Louis had long guessed that the Demon King Army had a backup plan.
Even though his strength has increased, it's impossible for him to be entirely without danger.
He didn't participate in the war against the Dark Night Goddess spawn, so it's hard to say how intense it was.
But when comparing with the Demon King Army, he uses the Cosmic Serpent as a benchmark.
At least in some aspect, the threat posed by the Demon King Army is certain to be continent-wide.
Only this way, can he be considered one of the Seven Calamities.
Look at the Seven Deadly Sins to see this.
The Sin of Pride, under the Emperor's command, pushed its power to the limit, causing the Iron Guard to retreat in fear at the sight of the legendary dragon race, let alone the continent-wide might.
The Sin of Wrath just entered the legendary realm, personal power wasn't evidently shown, yet it could amass a Death March that tore through the Tunisians, without even partaking in the battle itself.
