Isaac nearly groaned, as he felt Derek unload himself at the back of the slave's throat. He managed to swallow almost all of it, leaving only the slightest taste on his tongue. He pulled back, lapping out with his tongue, to paint it over his lips.
"Tha... thank you Sir," he rasped out, nearly laughing at the roughness of his own voice. Isaac knew that his superior healing would have him speaking without pain, quickly, almost quicker than he would have liked.