It is interesting and refreshing to see a powerful isekai character stick to real-world values (in regards to slavery), especially when they have the power and influence to do so. I know that "buying a female slave" is a power fantasy and sexual fantasy for many young men, but stories that defy...
Hooray, now her bloodline is secured for this kingdom because someone that powerful surely can't stand up to morally reprehensible (by the standards of the era he grew up in) actions and systems!
I really love this. Breast milk addiction aside, he's a really simple guy that just wants a nice life helping others. It's cute that he goes around, even playing with the dog. Making the decision to stay for family and reinforcing it this way works wonders, very "show don't tell".
I'm still confused by the fact that the subplot here is "defeat her so we can make her bloodline ability the kingdom's" and the MC or other isekai bois (from Japan) hear this and don't see it as effectively treating a prisoner of war as a baby-making machine and oppose it on those grounds...
Hmmmm...
I really hope he finds an out for her, or a way to give her an escape, because from what it looks like, her fate is going to end up in servitude or forced marriage just so the kingdom can get their hands on the rare magic.
And if that doesn't sound villainous or wrong, I don't know...
Every chapter, I hope that one girl is going to just relent and say "well if you're engaged, I'll give up", but nope, the premise only works if the ruling elite of each society are thots, I guess.
Poor guy, it's literally just super-thots everywhere he goes, you'd think the way they act that "romantic love" would be the rarest and freakiest fetish. And also clearly consent is not a word in any of these monster-girl's languages.
Fwiw, the daughter hasn't gone back on her word yet. Koto's still got one person caring for her, so the promise to be a friend when Koto's all alone still holds.
But seriously, when a parent has been lost, the kids kinda need to accept that the remaining parent isn't going to put their love...