Ryusuke Genda is the forty-three-year-old captain of the Library Task Force and is ranked Library Supervisor Third Class. It is partly due to him that Kasahara is drafted into the task force, though since he is the captain, he had the final say. He is very strong, and Kasahara even thinks he has enough brawn to take on a bear full force. He is skilled in military command operations and in politics, such as giving Media Betterment Act agents books and magazines the Library Defense Force had copies of during an operation so that they do not leave empty handed either.   Genda has quite an easy-going personality. He is somewhat impulsive, such as buying a new building for use as a future library only so that the task force could raid the premises and rescue Kasahara and Inamine when they were taken hostage. Despite his scary looks, Genda is actually close to his subordinates and never hesitated to make fun of them at some times.  It is also hinted that he harbors romantic feelings for Orikuchi Maki, his college friend who works as a journalist on Weekly New World. When that magazine was about to be banned due to some circumstances, Genda said that he would protect it with his life, because it's her magazine.  

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.

Iku Kasahara has dreamed of joining the Library Forces ever since one of its soldiers stepped in to protect her favorite book from being confiscated in a bookstore when she was younger. But now that she’s finally a recruit, she’s finding her dream job to be a bit of a nightmare. Especially since her hard-hearted drill instructor seems to have it in for her!
 
(Source: Viz Media)

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. 

An unaired episode included in the Toshokan Sensou DVD volume 3, and later on Blu-ray Box (June 8, 2012) that celebrates the airing of Toshokan Sensou: Kakumei no Tsubasa. 
Komaki was arrested for the violation of human rights of his girl friend Marie, who had difficulty in hearing. He was kept in custody and tortured by the Media Improvement Forces. The members of the Task Forces made a desperate effort to rescue him.

Ryuusuke Genda