I was excited for epidemics, but these are rather disappointingly bland diseases, unless our MC misdiagnosed them.
For one of those symptom sets, I instantly thought "oh god, it's cholera - this is actually gonna be a challenge", and instead it's... seasonal food poisoning? What?
@SakuraShower
What bugs me is that when they make them a weird mix of too advanced and too backwards
at once.
For instance, double-entry accounting was invented in the Renaissance in our world, for chrissakes, and it's very difficult to support a bunch of nobles in outfits looking like they could walk into the court of Louis XIV (the "Sun King") without the tax officials and merchants in the society already using that system. I'm not even going to name names on series that use that one as the "holy shit, what is this magic from the future?" the reincarnator brings, despite the world looking like one that couldn't exist without it, because the list would be too long.
Honestly, I'm actually a bit surprised the prince is just going along with her, since germ theory obviously isn't a thing here, and
handwashing wasn't even accepted as necessary to prevent infection in a hospital setting, let alone daily life, until the late 1800s. Everybody should be staring at the MC like she's grown two heads when she suggests you can prevent disease by washing up.
@omnilynx
Why would soap be expensive?
So here's a really interesting factoid: there was a period of time in England where they had a really high soap tax, making it a luxury only the upper classes could afford . Tax officials would even be present to ensure that industrial-scale soap boilers were locked up when they weren't around to monitor how much soap was being made, so the soapmakers couldn't sell it on the sly.
I'm not even joking.
I'm not sure whether that has anything to do with the situation in this manga (it probably doesn't), but there have been points at technological levels near what we see here where bathing was generally infrequent at best, and/or only the upper crust could afford soap (and you'd get fucked for trying to make it yourself).