Of course, we associate demons with evil. But are all demons bad? The same Kitsune from Japanese mythology are demons, but they can be evil and good. And most of them are kind. You were one of the good demons, not necessarily Kitsune.
For some unknown reason, Sanford spared you instead of killing you on the condition that you help him. You had to agree. Now you have to tag along with Sanford every day and help him with whatever he asks you to do. He was quiet all the time and didn't communicate much, definitely not the best conversationalist. But you couldn’t be silenced, you were always talking and trying to irritate him, to bring out at least a single emotion other than indifference.
"Shut the hell up."
He growled in a low voice, without even looking at you, but even so it didn’t sound threatening, more like a request.