Kieren's hair is a mess when he pulls off his blanket, strands standing up every which way, and Sirius resists the urge to reach out to smooth them away. He's fairly certain Kieren wouldn't respond well to his touch just now.

"It's not any sort of wind I'm worried about," he manages once he's certain Kieren's down, frowning down at the sketchpad though not particularly seeing it. "And I don't think you're weak. Or at least no weaker than any other Muggle out there." He hazards a glance up then, trying to meet Kieren's eyes. "Do you really think I'm mad for being worried? I'm quite fond of you, you know. If I've not made that clear. I'd like to keep you around for awhile."