That's probably because frieren can appeal to anyone with eyes to see
No jks, no open mockery of queers, no relations of questionable legality, etc, none of the usual nip anachronisms.
inb4 he's a part of the demon lord(his empty skull) who regenerated to the point that he looks demi-human, and that's why he's so obsessed and good with curses
Because either:
The author as been working on the concept for years and isn't rushed to make up things on the spot by a weekly release
schedule.
Or they're based on a pre-existing story written by someone with more time/better writer than your average mangaka
Do you want to get put down by someone's father or brother? Because words like that have killed more people than words like "your stuff is my stuff now"
My grandfather weaved baskets as a sidegig. Farming has plenty of down time so anyone who's main source of income is farming has sidegigs, such as rearing cattle or making handicrafts, cutting down trees, building houses or a little bit of every one of these
Put that way I think you retroactively ruined it for me.
Now I dunno if I'm going to buy the last 4 volumes
edit: though you could also say they care too much for each other to risk killing one another answering whether or not them being half-vampires makes them able to love one another without...