Sucking his Master's cock deep into his mouth, Isaac's mind started to quickly let go of the dark thoughts that had brought him to Derek's room that night. It was easy to let them go, now that there was so much to look forward to.
He hummed deep in the back of his throat. It wasn't calculated in the slightest, but the honest expression of his contentment. It was the next thing to purring, for the young wolf.