If Kieren's gained anything, Sirius hasn't noticed. There are a number of ways in which he looks different from before, obviously, but it's all in the color and texture of his skin, the warmth of him, the fall of his hair.

Grinning still, he reaches a hand out to help Kieren back to his feet. Briefly, he considers cleaning up the mess he's left, but figures it's worth leaving if only for the confusion it'll cause anyone who happens to walk past. "Something else?" Sirius remarks, arching an eyebrow as he starts heading toward the door. "Pray tell, what might you have in mind?"