Even after reading the second volume, I can't say I really care about this series. When I started this series, I found the plot to be only interesting at certain times in the story, I didn't care about any of the characters besides the protagonist (and hated when other characters appeared), and found the fanservice unnecessary. I figured that this would improve with the second volume. And I was wrong.
The plot got worse in this volume. I never really found myself interested, and couldn't really follow the plot of this volume. At least in the last volume, there were chapters that kept me interested enough to finish the book. While I did finish this volume, it took me longer than it should have. The characters did NOT improve in this volume, either. While I still found the protagonist interesting, she barely appeared in this volume. Instead, it focused on the characters who I found to be of no interest in the last volume, and the plot did nothing to make me like them more.
The only thing that changed slightly was the fanservice, which was lesser in this volume. What was there was no less unnecessary than what was in the first volume, however.
I will still read this series (I'll at least give it one more volume, since I'm checking it out from the library and aren't paying for it), but will be putting it off for awhile.