[Shun's listening out as well, but he can't hear anything as yet. It's not just orderly, though - he can smell the cleaner on the air, and notice the lack of settled dust.]

Something else. This isn't just orderly, they've deep cleaned it not that long ago. I can't see dust on anything. Though that makes me wonder what they wanted to obliterate traces of.

[Or one of them, at least. He doubts the children are in on it, and the partner might have just gone along with the cleaning if there was another excuse for it.]