The soul is something every devil is born with an insatiable longing for; it's a law of the multiverse, and as a Great Devil, Piere craves it even more so.
In the eyes of devils, there are no eternal friends, only unchanging interests.
Cassius knew that if Piere were still the lord of Aphernas, he would not hesitate to cooperate with Wilhelm and become an enemy of the Empire.
Piere's voice was hoarse like a venomous serpent: "Your Majesty Cassius, Zareel is too powerful now, and my forces in Hell are retreating step by step.
Forgive me for being blunt, but those insane 'soulless' under your command, though undying, cannot even provide us with a trace of Power of the Soul.
As an ally of the Empire, I must obtain more souls to continue resisting her and become your support, so...
"Impossible."
Before Piere finished speaking, Cassius ruthlessly refused; in those few short exchanges, he had already guessed Piere's thoughts.
