So the whole graduation fiasco is solved, at least for non-centres. You graduate when your heart marks turn into diamonds!
Seriously speaking now, I'm glad the Takamina succession mini arc has been put aside for now. Way more interested in the centre nova mystery, and the Kirara glowing mystery between Nagisa and Chieri. And this episode advanced both in spades. XD
Oh, and can't forget Makoto. Man she was so moe this episode. <3