Noah already knows about Cabeswater, and he's slightly relieved that Ronan's message isn't something damaging. He isn't sure what exactly could be on Ronan's back that could hurt him, or them, but this at least won't.

"The one here is different," Noah verifies. There are reasons why, and they could figure out the logistics on their own, but all Noah needs is to feel it. "It's just easier to call it Cabeswater."