Vigilante A looked at what remained of the tree's root after listening to William's introduction and asked doubtfully, "Explain to me again, what do you mean by accomplice and what do you mean by sacrifice?"
William explained hurriedly, "When I first came in here, I was with Chief Hook and that unorthodox alchemist leader Countess Barito. That Countess had wanted to use Grand Wizard Abraham's Red Tree form as a sacrifice for the Astral Formation to enhance its power… Chief Hook had tried to talk her out of it, to not sacrifice the Grand Wizard while he was in a disorientated state."
As for what became of Chief Hook, he did not elaborate because the chief had hurt his uncle, he did not wish to see him come back alive…