I just finished the anime and the only thing that I could say is I'm disappointed that it ended so quickly! This is a golden opportunity for anime and it's better than Rosario x vampire by far. It did good with its trope from episode 1 to episode 13 all the characters were likeable out of the characters were relatable.
Guess turning 30 now that I think about it.
I feel Clara stole the whole show.
That is the biggest obvious question. I have not read ahead in the manga so your theory is as good as mine.