The lack of a victim for his anger made him angrier. He said, "I regret it. I regret all of it."
He regrets not leaving as soon as the Count wanted to leave the city. He regrets listening to the Count to return to the headquarters. He regrets rushing to get help from the hero society instead of rushing back to New London himself.
He believes that if he had done something a little different, he might not be in his current situation. He is sure about that concerning his last regret.
He had rushed to report to the hero society about the Count's help. He didn't create any anchor along the way. He was in a rush, and he thought that they would follow him immediately to enact revenge.
But they didn't do that. Instead, they captured him and sealed his ability as if he was some criminal. Then they took his testimony and locked him up while they went to deliberate on the proper course of action.
