Byakuya and Naraku in “Unfinished Business”

(to Kanna) It appears they have no intention of killing you. For the life of me, I can't fathom why. I mean, Kagome could have fired her Sacred Arrow into the hole in the sky and killed you, but instead she chose to warn everyone. These people are completely insane.

Naraku

(watching from afar, chuckling) What are you fools thinking? Do you pity Kanna- is that it? Don't you realize she cannot feel a thing- be it pain, or sorrow, or even fear? Yes- your pity is wasted on her. She doesn't even understand the concept.