so thats where the cute girl in the cover comes into play.
But one thing that really weirds me out is that her corpse was buried super deep underground, you saw how deep that was, so how long would it take for all those layers of land to form over the corpse of her dead body? that would take a super long time for that many layers to form, meaning that over that period of time. Evolution and adaptations would've taken place. like height difference, or skeletal sizes. But the most important difference would be language, they're illiterately across continents, so they shouldn't even have the same root linguistic to derive from, but lets say that they somehow did come from the same root linguistic.
A lot of people say "old English" when they speak about the past when they hear people talking like "Turn thee, Benvolio, Look upon thy death". But in reality, its called Elizabethan English while in reality what old english would really be like, would be something similar to german since thats where english originated from.
That rant about the english langauge was because I wanted to show an example for you all to imagine how drastic language changes over time. But back to my main point, The dead body shouldn't be able to communicate with our mc with all the time thats passed for language to evolve. They shouldn't even know a lick of each others language. And if she starts spitting out words of the same language like she grew up with them, I'm gonna be pissed.
But hey, what am I to expect from this manga.