@mage_goo You got me in that regard. I should probably clarify that my knowledge isn't the most accurate since I'm not a history buff or anything, as such please take my words with a grain of salt. With that said, I will say that, as restricted as books were back in that age, commoners did typically have at least some limited access to books. However, it largely depended on the type of books, and if I remember correctly most books were limited to religious texts and other similar stories that had some kind of moral or spiritual teaching(Some fictional, others factual, and some that were believed factual but are likely fictional in hindsight). That, of course, doesn't include the many history books that were commissioned throughout the years since antiquity. Ultimately, however, it depended on whether or not someone was literate, which most commoners weren't. Those that were literate among commoners were scribes, scholars, and religious figures. As such, it makes sense that a nun would be somewhat literate and thus would have read some stories, either out of obligation if they were religious stories or for recreational purposes, such as if a merchant happened to have a few books among their wares. Hard to say for certain within this specific context of this manga since nuns are normally supposed to leave "earthly possessions" behind and are not supposed to seek out anything that doesn't further their devotion to god, but it's very possible that Nana may have a bit more freedom than normal nuns and thus is likely allowed to seek out more earthly desires, such as owning things and going to markets to buy books and whatnot.