In the near future, the federal government creates a committee to rid society of books it deems unsuitable. The libraries vow to protect their collections, and with the help of local governments, form a military group to defend themselves—the Library Forces! Hikaru's big brother is working for the enemy, and he wants to reunite with Hikaru. Meanwhile, someone is posting negative reviews on the library's website, and Kasahara intends to find out who. Later, personal issues are set aside when the Library Forces find out about a book burning on their home turf!