Its hatred towards humankind does not stem from the instincts of the undead, nor from depravity's distortion. Although the Hero cannot determine the reason, it is clearly inconsistent with the history that the Sergeant told her.
She certainly doesn't believe the Sergeant deceived her, but back then their exploration of the Ancient Royal City was merely a cursory one. The ancient history has been passed down to the present, and it's hard to say how much matches the truth.
Perhaps the enemy of one's enemy is a friend. With such a simple thought, the Hero seeks to continue questioning the undead who once opposed the Angel King.
"What does betrayal mean? Can you tell me about it—"
[The Hero touches the truth of history]
[Malicious behavior detected, skill: Doctrine of Reason activated (200-Only View)]
D626=d626(396)=396
However, before the Hero could finish speaking, her words abruptly stopped.