[ Kakashi can feel the tension coiled up in a series of knots along the curve of Barnaby's shoulderblades, and he falls quiet as he lets his thumbs press against each one, slowly smoothing it out with deep, long strokes. Even through a layer of fabric, he can feel the way the knots fight against his fingers as as they slide upwards, then skim up under Barnaby's hair to slowly rub the tension of his neck. ]

You've got some pretty bad knots.

[ More a gentle comment than anything else. ]

Are you taking breaks?

[ Being bent over a desk for long periods can lead to this kind of tension, after all. Kakashi's a little too familiar with it -- though he usually manages to avoid fucking up his back by unapologetically taking as many breaks as possible. ]