I've noticed from sometime you've been posting final episode with old episode at the same time. I'm not if its just me when skipping some files on utorrent, the task sometimes ends although the one I selected unfinished and the percentage goes beyond 100%. If short title such as Natsunagu! is not a big deal, but titles has more than 350MB on each episode is a problem. I don't see a reason why posting all episodes now instead of when some people needed. Up to you if you want to stay with what you're doing... its just my concern.

Please give me only 12 episodes

the above still means you want all 12 episodes.. you should write. "Please give me only episode 12."