Nope. I kind of assumed they were ghosts or hints from the past but nobody's been able to confirm that for me. I'm pretty sure it's not one of them, because as far as I can tell all of Izuminokami's hints were pointing at other roles.

His started with a C. Seven letters. Something a sword would be familiar with, not really something to call a person or an object and not exactly an adjective. [A withering look.] We played a guessing game for a while before I gave up.