Responses
I'm sorry, I'm guessing English isn't your first language but reading your comment just made me laugh really hard, "precreation" instead of "procreation," and even funnier "prostrate"???? instead of "procreate"(? I'm assuming??) cause i read it as prostate at first
Anyway, thank you for giving me a laugh, and i agree with your sentiment (⌒▽⌒)

I see potential romance with the 1st princess , i mean that gurl fell for him but the demon king is too busy just trying to survive to feel romance at the moment. Only when you are alive and at peace that people can think about precreation and in this case precreation is nonsense cuz he is a demon and doesn't need to prostrate. So romance itself would be nonsensical in this webtoon.
I shall tolerate romance if they put it in but if they make out of characters just for romance, I'd drop this so quick.