The black bile. [Not 'black shit' Rey, they've been over this.] But yes, it does. I am what's known as twice-cursed, and it's... an unfortunate condition, one that will plague me until the end of my days.

[As it turns out, for as much as he keeps to himself, he does have some empathy lingering inside of him, particularly for people -- even demons -- who are suffering from their own afflictions.]