The last time they fought, Klaus had been under the enhancement of the Blood Moon Transformation. This transformation gave him a sixfold power upgrade, which gave him an edge temporarily in that battle.
Klaus had wanted nothing more than to use his own strength alone to defeat them. But alas, you can't always get what you want—or, more accurately, you can't always fight what's already dead.
Yet, if you're someone the heavens despise so much that they dig into your past and summon the enemies you've already slain, then there's no telling what might come your way.
Klaus, in a twisted sense, was fortunate. What had nearly been his ultimate defeat had now reappeared in his tribulation like some kind of heart demon—seven of them. They charged at him and before long…
The fight was underway.
***