This series started out really good, I would have rated the first part 4 stars or more. After a while though it made a huge shift in plot & characters, and seemed like a completely unrelated series. That part sucked major balls, and should be given a negative rating.
If I had the capacity to give the series 2 seperate ratings, I would give the first part very high ones (probably 8/10), but the later part deserves very low ones for story & overall (probably 0.0003/10). The scores included here are the 2 sets averaged together.