Episode 11 was pretty meh, save for the Katja action. She's got three slaves now! Even little Lulu gave in and became one. Hana looked freaking creepy in Ayame's "dream sequence"
No idea how they're going to wrap this up with only one episode left (the answer is most likely that they won't). Mafuyu's monologue in the preview indicates they're fully aware they've just been fooling around for half the season. If it means they're planning to make a third season later on, than it's all good.