You mentioned that Yana has a person who helps her making her story historically accurate, right? Well, one of my friends who hates the series has said a few things I want you to clear it up if you can: • in the Green Witch Arc, that tank or whatever didn’t exist back then? • It was mustard gas or something that was used to hurt Sebastian and Ciel in the Green Witch Arc, right? apparently that didn’t exist then either • They didn’t have pistols like Mey-Rin used in Book of Circus
Ahh yes, her name is Ri/ko Mu/ra/ka/mi! I think I once described her job as “checking the historical accuracy of Yana’s works” or something like that in one of my translations (because that’s what a “時代考証” usually does), but now that I think about it, the word “history advisor” might be more accurate in her case! She mainly helps Yana with historical research (collecting data about Victorian England) and provides her with some ideas (e.g. the
infamous cricket games):
She also checks the historical accuracy of Kuro to some extent but the thing is that Kuro isn’t and never was a 100% historical manga, but a fantasy manga set in Victorian England AU with demons, shinigamis, TVs, mobile phones, video games (if you’ve forgotten that these things exist in Kuro-verse, then I recommend you to reread vol.1-5), Chanel agenda, Cartier Pasha wrist watch, and full of other anachronisms and parodies (boy bands *cough*).
In one of her old blog posts, she once said:
“[…] From this boarding school arc, Miss Ri/ko Mu/ra/ka/mi who participated in the anime production also joined our [manga] team as our ‘history advisor’. I had her do research on boarding schools (there were barely any material available in Japan) and tell me about them (^o^)
However, everytime [she told me some details about boarding schools] I asked her “I’m sorry, I get that that’s the actual historical event, but do you think I can arrange it [in Kuro-style]?” and thus caused her trouble with my usual nonsense. […]”
So it’s just Yana’s
habit style to use historical events & characters (e.g. Jack the Ripper, Campania/Titanic, Arthur Conan Doyle, cricket games, etc) and arrange them in Kuroshitsuji-style! :D
And as for the tank and the mustard gas in the GW arc, that was the whole point of the arc! xD The thing is that *in Kuro-verse* (again, it’s an AU) Germany had *secretly* invented all these weapons way before they were first introduced in actual history (WW1), but they were ALL destroyed by Sebastian. So Germany now needs to recreate them from scratch which will probably take them few years if not decades. So in other words, Sebastian & our Ciel kinda managed to change the course of history (and thus maybe even prevented or at least delayed an outbreak of a potential war)!
Tl;dr: Most anachronisms in Kuro are on purpose and that’s what makes the Kuro-verse so unique and interesting!! :D