"Unfortunately, it's impossible for me to say. Perhaps even the storm itself has forgotten the origin of its anger." It wouldn't be impossible, nor even the strangest thing he's ever heard of. Humans forgot their real reasons for being angry at each other all the time, or so he's seen from divorce proceedings in the past (the one civil case dramatic enough to earn its place upon the stage, and therefore in his courtroom). "As for the ghosts, I will have to keep an eye out and see if I can discover anything from them. Perhaps their emotions are clearer than those of the storm."