It's a slow, heady kiss, Sirius's lips parting instinctively as he lets out a soft sound and leans up into it even as Kieren pulls away to grab his sketchpad. He watches with heavy-lidded eyes, then bites down on his lip when he realizes what exactly it is Kieren's sketching.

His laugh is a low thing then and he smooths a hand down his bare stomach, fingers resting on the top button of his jeans. "Don't you prefer a reference?"