The Murdercru that just can't stop, won't stop, doesn't know how to stop.

The rain doesn't appear to exist more than a meter or two over Chihiro's head. "I haven't seen a pattern," she admits. She's unconvinced of his argument, pointing out, "Maybe not, but you can rust, and we don't know if we're all working like we should."

Which is a point, more or less, and she's concerned he may catch a cold precisely because things like water and fire are manifesting around the code-born.