Its been a while since I have found a series that had a great cast of characters, story, and plot. If you haven't seen it yet you are missing out on your not so typical harem series. Much like Spice and Wolf you got a lot of an antagonist relationship going on between the main characters. At first they are only using one or the other for their own benefit, however as the series progresses they come to care about one another. There is a number of times where Ryugii is so damn thick-skulled of the affections of the other girls and Taiga being so hot headed. In the end I like how it ended which is something I rarely say about any anime series.
