This was an interesting volume. There is mystery surrounding most of our main characters, and while initially I was annoyed with that, I actually am enjoying the fact they all aren't ordinary.
I am really curious to see what happens now with the man connected with Nagi (Negi's dad), and they didn't really get into what is happening with Takamichi in captivity, so I hope we get to see more of that next volume. And of course... who will win the tournament, though let's be honest, Negi is going to win.
Onward with volume 13!!