Dragon Crisis - Started out decent at first, but it began to feel like a filler (similar to that of a Naruto Shippuuden filler); one goal per episode, goal is always achieved at the end. There was way too much ecchi for the good of the series, which began to degrade it entirely. Overall, the series feels generic in terms of similarities to Zero no Tsukaima, Shakugan no Shana, etc...
It's not unique, its OST is not particularly outstanding, things run by too quickly, and ecchi barrage is not nice. Simple.