So is Camille 'C'?
I think theres two ways to take Swains new line to Camille. Swain steals souls, and when he does so he gets an insight into them.
So im taking it as these:
-Camille IS 'C', and swain is mocking her about it. -Swain is commenting about 'C', as Camille has heard about them too
I think its interesting. I feel like Riot wont give any answers here, but I think either way, its pretty cool.