My that was an unexpected way to end, it came out of left field. Amusingly Kore wa decided not to be outdone by Highschool DxD and so introduced a slime that eats away at clothes that was just so much more than the one in DxD. The ending episode for this series was so much better than for the last season, that's for sure, even if it was a bit weird.
What is it about the show that I liked despite it being a Harem? I think I know why, despite it being a harem, the first series didn't have anyone going after the protagonist or be obviously in love with him like Infinite Stratos (excluding moe vampire girl), it just seemed like they liked hanging around with him, ad they liked his company. It just felt a whole lot sweeter and more innocent than the average harem, I actually didn't feel like I was watching something really dirty (even if it was at points), so I found it likable.
However this season they just didn't do it so well, the humour, relationship between the characters, and the episode content just wasn't as good. They just kept adding to the Harem which I didn't like, and it was much more crude with regards to the fanservice. Actually, I suppose I may just have matured more as an anime watcher since the first series, it has been a whole year, but I just felt it was more obtrusive.
The humour slipped a bit as well, I did laugh a lot of the time, like with the Full Metal Panic figurine sketch, but perhaps it's just using the same humour and it's tired now, but I just didn't enjoy it as much. One is certain though, the ending was much better, so much better.
It's either a 4 or a 5 from me, and I think I'll give it a... 4. In the end, I just didn't like it as much, and there were too many females. Still, I still do like the series, and will watch the next series should it come out.