This show turned out so much better than I expected at first. I was on the verge of dropping it at around episode 5 or 6, because it just seemed like a boring ecchi harem anime whose main selling point was a hot, mentally ill girl who conveniently kept forgetting to wear clothes. Very glad I stuck with it though, because it got so much better later on.
It was a bit overdramatic at times, but overall, the story was great, the characters were great (once they'd been developed a bit. Most of them were annoying to begin with, but changed into genuinely interesting people as the show went on), and it was a good watch. Never amazing, but definitely good, especially towards the end. I give it 6/10 overall.
Also, speaking of the end, introducing two new characters in the final episode? I smell a sequel coming...