Responses
Currently he has only one wife, he doesn't really seem to care all that much about her tho, he married her just because he had to marry someone.
But, it was stated so far a few times, that in this universe, dukes have multiple wifes. So it does seem he'll marry again a few times. Or at least the possibility is there. (i didn't read the novel, so i don't really know)
I was about to read it because a lot of people say that it's not harem and he only has one wife but then as I read the other comments it say it is in spoilers??
So really what is it? If it's harem I'll not read it tho, I really like it's premise