The series' heroine, Kasahara, is a new recruit, a corporal. Since this is a shojo manga, she is naturally smitten with her commanding officer, who is equally, if gruffly, smitten with her (one of the more unique aspects is that she is taller than he is; he is 5'6" and she is at least 5'8").
The stories center on Kasahara as she comes to terms with her job, her parents, her idealism, her future, and her boss, Atsushi Dojo. Kasahara is an endearing character; as the heroine of a coming-of-age tale, she attracts the readers' sympathy, occasional irritation, and optimism.
However, to a large extent, the context is what makes the series (and anime) work. That is, the politics actually make sense.
The teen books I encountered in my youth tended to be simplistic: good, noble characters versus bad, corrupt characters. Library Wars isn't that easily disentangled. There are spies and dissenters (some malevolent; some well-meaning), appeasers and mavericks within every group. In addition, there are outlying parties, such as the Future of the Library group, which opposes censorship but wants to centralize; it uses the supposed radical leanings of the Library Forces to argue in favor of its position (extreme action is considered a major faux pas by Kasahara's group, the Library Forces, precisely because it would give the Future of the Library group more power).
|Spy-master Asako Shibazaki is a complex|
|character--as clever and as ruthless|
|as she appears yet more than both those|
|attributes as well.|
Of course, there's a romance. Like all good romances, it is the romance of equals (despite the difference in rank). Kasahara and Dojo are more like each other than either will admit. And they are ready and able to rescue each other when the plot demands. Kasahara is reckless yet intelligent, clever, and loyal. Dojo's adoration is understandable. Her admiration for his discipline and dedication is likewise understandable.
In fact, all the characters make an impact from stern and stolid Tezuka to wily mastermind Asako. All in all, an excellent series.