Motosu Urano, a college student and a bookworm of the highest order, loses her life in an avalanche of books and wakes up in another world as a sickly girl named Main. Nevertheless confident that she can deal with any situation as long as she has books to read, she looks all over her new home for one, but doesn't find any. To make matters worse, she couldn't see any writing in town when out with her mother Eva. She realized that she found herself in a world with a low literacy rate, one where books were prohibitively expensive.
books were rare and pricey till the printing 
press made them possible to mass-produce.
كانتِ الكتُب نادرة وثمينة حتّى جعلتْها 
.آلات الطّباعة مُتاحة بكمّيات كبيرة
waren Bücher eine Luxusware, bis die
Erfindung der Druckerpresse ermöglichte,
fueron raros y escasos hasta que la
imprenta permitió su producción en masa.
fueron raros y escasos hasta que la
imprenta permitió su producción en masa.
prima che la arrivasse la stampa
grazie al torchio tipografico,
livros eram bem caros até a imprensa
ser inventada e produzi-los em massa.
до изобретения печатного пресса 
одна книга стоила целое состояние.