Tao was exerting himself now, but one of the advantages of being undead was you did not sweat. Not normally. It took quite a bit for those systems to kick in. Riley was wonderfully obedient, an absolute change from the tussle they constantly had over being dominant outside of this room.
He watched as his skin bunched with each hit, but knew it was involuntary. It was when he ducked his head under a paw and let out a small howl that Tao stopped his arm. Dropping it to his side he waited. "I said to keep still, if you can not I will stop." He warned.