хыха

Well, as far as I know, 4 generations is enough to not be related legally, and there is an official graph going around that illustrates how many generations are between them, and there are at least three (even more if we count the empty gaps of unknown ancestors) I also read that it takes 7+ generations for the original DNA to disappear, if we're just talking about biology, and here is where it may get kind of suspicious, considering how little genealogical information about both of them we have on our hands. We can't say for sure how many generations Isayama would put into those empty gaps, so both arguments are kind of valid? If you think there is as little as one, then sure it may seem provocative. I would assume that there are way more, though. I may not be 100% correct, however, I'm not so good in all this, but there are accounts that possess way more information on the topic, you could look into them if you wish.