Final episode!
[spoiler]Matsuri was able to scratch Aono, but Aono was able to dodge off her sword attack. With it, Aono's powers were quickly being depleted so those two have to finish off the fight now. Well in the end Matsuri ended up losing her sword to Aono, and Aono was going to stab her until Yorito got in the way. This caused Yorito to disappear, and Aono broke down emotionally. Matsuri then picked up the sword and finally stabbed Aono. Aono is now a human being once again, and Matsuri smiled for the last time as the sun rises. End of first half!
Second half mostly consists of aftermath events with Takeshi and Mayuko and Mana and Koyori. Fun moments included Mana taking up photography, and Aono is wearing their school uniform.
So in short, Aono is the last one standing!

[/spoiler]
I like this series. The very look of Matsuri is what really attracted me towards the series
sola, and it was able to deliver some pretty nifty twists and turns (and some nice action scenes as well). There are some parts that could use some tinkering, but it's an overall solid series I don't mind buying the DVDs when it comes out in R1.
On another note, I heard there are 2 DVD-only episodes coming soon.