Not that you would know it to look at him, but Zoro had always appreciated the value of spontaneous catnaps. He could sleep at almost any time, in sometimes unlikely places and under unlikely circumstances. This had come from spending so many years constantly on the move, over land and sea, never being settled or set to a schedule - and his having keen senses, even as a human, that could wake him in an instant if he had the need. It was true that both he and Sanji had seen something of themselves in Noctis, after all, and Zoro took a moment to remember that as he watched the boy sleep and purr in the big bay window.
Putting a book he'd brought upstairs with him over a knee, Zoro sat on the edge of the window seat, and slid a warm, solid hand at the slight gape between Noctis' shirt and his pants to rub the boy's belly like he was an overgrown kitten.