I concur. I just finished the first episode and was thrilled with a bunch of it. Unfortunately I think this will turn into a common haremish show later on down the road but so far, it is quite refreshing to see a change in this type of series.
EDIT: Watched this again and caught a few things that I didn't catch the first time, was slightly distracted......... ANYWAYS. I don't think this will be a typical harem anymore with a few key words. It could very well possibly turn dark. But instinct tells me it won't.