The government has passed the Media Betterment Act, establishing a military police force to stop the spread of "negative influences harmful to society;" and in response, libraries have organized their own military units to protect freedom of expression. After being saved by a Library Defense Force agent in a bookstore, Kasahara is inspired to enlist in the Library Defense Force. Although she proves quite athletic and capable, she must endure the harsh but meaningful training of her instructor and superior officer, Doujou. As she learns how to be a good soldier, she participates in LDF operations, helping protect literary freedom for everyone.
Kyoko moves to the big city with the prince of her dreams Shotaro; he wants to make it big in the entertainment business, so she works hard at many different jobs to support him as he achieves his dream. However, one day, Kyoko accidentally discovers the horrible truth: the love of her life thinks of her as a 'plain and boring woman!' Outraged, Kyoko swears revenge - she will make it even bigger than Shotaro in the entertainment world. The only question is, how will she fulfill her desire?
The female protagonists in Toshokan Sensou Spitfire! and Skip Beat have an upbeat personality even though their current situation may be relatively bleak, they always see the sunshine at the end. They strive to make it to the top of their respective fields as the main male characters help them along the way without the female characters knowing.