[Temporarily canine roommates have definitely been fretting for hours. Ryou's not used to Atem being out overnight, especially not as a nephilim of all things. He'd been worried that perhaps Atem might have gotten trapped somewhere, or hazed out because it was too dark.

So, naturally, Ryou had spent a portion of the night on a brisk run through the streets--not a very long one, he's not as fast as Atem, and he didn't want to miss crossing paths if he showed up at the apartment again. The rest of the night had been spent pacing around the apartment with the fur along his back puffed up in a ridiculous show of anxiety. So when he hears motion on the fire escape, Ryou's ears immediately prick up and he bounds out of his room on all fours (thanks, Mukuro, for showing him the quadrupedal light) and stops in front of the window. He jumps back a bit, trying to stay clear of the daylight so he doesn't transform just yet. If he does, he won't be able to focus for how tired he'll be...

And he wants to be alert, because Atem smells like the ocean. What was he doing there? Wh...why didn't he at least send Ryou a message on the laptops?]

Atem! W...where have you been?? Did you get trapped in the dark? I could have gotten you if you told me, we have flashlights--why are you...I mean, that is...you smell like the sea.

[Trust him, he can smell it, and the twitching of his nose along with the low snuffing sound indicates that he's trying to get a better idea here.]