Library Wars: Love & War Vol. 1 (manga)

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!