Upon hearing that familiar name, Zareel's complexion changed drastically, a mixture of anger and fear. Her whole body trembled, and for the first time, an emotion called "fear" appeared on her face.
Zareel kept struggling, shaking her head, "No, no, I am the Duke of Avernus appointed by the Lord of Nine Prisons! You cannot kill me! Doing this is being against the entire Hell!!"
Cassius intensified the force in his claws, tightening them more and more, and said with a smile, "It's alright, soon it won't be. My dear ally will reclaim that Iron Throne and take your place."
...
Avernus.
Bronze Fortress Inner Circle.
Disguised as a Devil's Servant, the Swashbuckler focused intently on his panel.
Suddenly, he shouted excitedly, "It's here! That special mission, infiltrate Zareel's palace and summon the Great Devil Piere!"
"Alright, let's rush in!"