Ok
While I don't think this series was terrible, I also didn't love it. The character development was fine. The plot was ok. But there were things that didn't make sense. I would write them here, but it would spoil the story for you.
I will say that the whole Arthur thing was weird. I think that the Knights becoming the harem was weird. That they were involved with each other was weird. I didn't really get why they came back. Couldn't someone else take care of the problem? How did Morgana get so strong with nobody noticing? I don't know, it was just weird. Again, not a terrible story. It just didn't work for me.