Ascendance of a Bookworm (Manga)
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Manga by Miya Kazuki, Suzuka, Ryo Namino, Hikaru Katsuki | A young woman who loves books dies and is reborn in another world as Myne, a sickly child from a poor family. Worst of all, there are almost no books in this world! So Myne decides that she'll just have to make her own and become a librarian.

To access the Royal Academy’s library, Rozemyne must not only finish her own classes but ensure that every other first-year passes as well. Regressive faction politics and the jureve’s impact on her mana control make that even harder than it sounds.