Manga adaptation of Part 4 of Honzuki no Gekokujou.

Rozemyne has awoken from her two-year slumber. Everything and everyone has changed, which is as terrifying as it sounds, but she doesn’t have time to waste before she’s thrust toward the Royal Academy—a requirement for becoming a noble. There, she will meet all sorts of colorful teachers and students from other duchies... but can she keep her composure in the face of the most books she’s seen yet? Our bookworm goes to school in the newest installment of this biblio-fantasy by book lovers, for book lovers.

(Source: J-Novel Club)