Willian glanced at Simon and said, "You can take care of this on your own. I would like a thorough result." with that said he did not glance at the Duke and left the cell.
The reason why he could subdue the Duke was his blood. While fighting with the sinner. Willian emitted the aura of his blood. Even if he was sitting silently or talking to people he would be refining the power inside the blood. This was the reason he could deter the old Duke.
The suppression of the progenitor's bloodline was enough to make the people obedient. Although Willian had not yet refined it completely still it was strong enough. The man left the cell, and Simon said, "Duke Marshall, this is your last chance. Help me help yourself."
The Duke nodded and two people began to talk. Willian meanwhile went outside with Seraphine and Oracle. He said, "Seraphine, come with me to the practice hall." his mood was turbulent he needed to talk to someone.