"Realistically you wouldn't last a day without getting into trouble," Andy agreed. "My suggestion would be to get used to this world from a safe place that will keep you physically alive while you will get acquainted with the human customs. If this were a horror movie the audience would collectively groan for my proposal, but I have a spare bedroom. I will need you to promise me you won't kill me or try to kill me while I sleep. Or when I'm awake. Or the vague state between the two." It was best to get everything covered, there were stories enough of people or demons being very literary when it came to such promises. 

[i]'You promised me you wouldn't kill me!' 'Only in your sleep, but you are awake, aren't you?' *evil grin*[/i]
Well, maybe he watched too many movies, but still. 

He looked at the Laizu, it probably wasn't the wisest idea to invite something he didn't know to his home, but he was intrigued. This non-human being in a human body was the most interesting person he would ever meet in his life. And in the end, the only life he was risking with this was his own. If the Laizu was truly malicious he could have already tried to kill him in the stationary car, the fact he conversed instead of trying to eat him certainly was in his favour.