This is a pretty mild series in my opinion. Although if they come up with a second season I might change my mind. The idea for the fox spirit-guardian is interesting for the plot, I'd say that's about as original as it gets. But they could seriously have done more with it which didn't really happen. There are a couple filler episodes in there, some of which had this annoying sakura girl character just rambling on and on which I suppose was supposed to be some sort of comic relief =__=. Other than that, it just ended early so there isn't really all that muchpoint to this series.
Overall, it's an alright series to watch, but at the same time leaves you with the impression that it lacks a lot of things.