This is the final volume.
Ufufufufu! :)
Oh, and the obi has some information about the upcoming drama CD. Mari is to be played by Sasaki Mikoi. She's relatively new. I think I might have heard her voice in some radio (likely Milky Holmes related), but I don't really remember. Akko is to be played by Endou Aya. That was a bit of a surprise to me, but I think she would be a great fit for the role. They're going to start selling it at this year's winter Comic Market. Unfortunately, I'm not going to Japan (or anywhere that requires breaking my boycott of TSA), nor do I want to ask anyone to get it for me (having seen what Comike is like), so I'm just going to wait for it to become available in normal sales channels.