I think the most stupid thing of all in this, is the fact that MC is so much more freaking powerful than anyone else in the village, but somehow they can force him to marry?, like why not just say, "Not now, fuck off i'm researching magic."?
also, how did people not realise what was happening with the village inbreeding? or is "All have white hair, and red eyes" not enough of a clue?, and it's really stupid to worry about inbreeding effects when they have survived for so long. without apparent Genetic defects, in a world where there is such thing as "Magic".
anyway, dropping this, i hate this kind of inconsistency.