Kazuichi Inamine is the commander of the Library Defense Forces who is in direct charge of the Kantō Library Base and has been involved with the conflict between the Media Betterment Committee and the Library Defense Force since early on. Twenty years prior to the beginning of the story, a major conflict between the two factions occurred at the library in Hino, Tokyo where a group siding with the Media Betterment Act raided the library. Inamine was caught in the middle of the conflict and lost his wife and his right leg because of it.  (Source: Wikipedia)

Toshokan Sensou tells the story of Kasahara Iku, the first woman to join the Library Task Force. In the near future in Japan, the Media Enhancement Law has been forced upon the population censoring all books and media. To counter this, the Library Defense Force was created. To protect themselves against the Media Enhancement Law Commission, all major libraries are fully equipped with a military Task Force, who take it upon themselves to protect the books and freedom of media of the people. This anime follows Iku and her fellow soldiers as they protect various special books and artifacts from the oppression of the Media Enhancement Law Commission. A love story, war story, and comedy all rolled into one.

Kasahara Iku and Dojo Atsushi receive an emergency recall in the middle of their date as Japan is rocked by a terror attack. Their new duty is a protection detail assigned to Touma Kurato, an author. Meanwhile, the relationship between Librarians and the Media Purity Committee is also worsening. 