Taki, a high school boy from Tokyo, dreams that he is a girl living in the mountains. As the two begin swapping lives, a miraculous story is set in motion.

    The libraries vow to protect their collections, and with the help of local governments, form a military group to defend themselves--the Library Forces!Iku Kasahara has dreamed of joining the Library Defense Force 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!