Now that he understood what he was dealing with—now that he knew the aura was corrupted Infernal Energy intertwined with the evil will of the Abyss Devouring Sword—he had the means to trace it, to hunt it down if he wished.
He had the Abyss Devouring Sword, and the resonance of his Infernal Demon Tattoo, would allow him to sense any fluctuations, however faint. He could follow the trail, uncover the source hidden within the massive Tower of Truth.
But even as he realized this, the question still hung heavy in the air, heavier than all the mysteries he had faced so far: Should he?
It wasn't a matter of whether he could. It was whether he should. Whoever had hidden this thing—this presence, this corruption—had done so with the clear, deliberate intention of never being discovered. It wasn't simply buried; it was concealed so carefully that even the tower spirit, Xolo, who should have been omnipresent within these walls, had no knowledge of it. That alone spoke volumes.