The Marren Clan is literally an incest village which explains why the white hair and red eyes are their most general appearances. Surprisingly, they have no DNA defects because plot and magic.
I mean who knows, this is the same author who made Idol Pretender so there's a good chance that she will stay in that world in the end and accepting it.
So is Maisora really has a sexual experience or what? She keeps pushing about the "virgin" comments that I'm starting to believe that she's doing it because of her insecurities.