I agree with u but I think u might be off with ur spoiled rich kid, sure he's acting the part of a spoiled rich kid but I don't think he was with his father from the day he was born, if u remember at the coming of age party a man said "so that's the son of that filthy gypsy" (at least somewhere along those lines) so I can c why others might hate him bcuz he ain't a full pure blood as how they'd call him, a wealthy man whose (probably a king) had an illegitimate child with a gypsy (whore/prostitute)
Oh, i'm talking about the readers, not the people in the manga. Sorry if i didn't come across specific enough.
The dad and son seem to be getting hate, the dad for being a "pedo" and the son because reasons? We don't know how old the #1 was when he lost his virginity, he could've been of legal age when it happened. They trained him up unti "he was ready", i'm assuming "ready" is of legal age. The dad treated him really well, i don't see the problem as of now. All the nobles take their sons there to "become men", it seems that society in this manga doesn't view buying prostitutes, even young ones, as "wrong". Similar to the places irl that set up arranged marriages between older men and teenage girls. To us it's weird, to them it's a culture thing. I think the shop is the disgusting thing here, they're the ones prowling for children to train as prostitutes. As far as he was concerned he was just spending money on a service. The son i can kinda (?) understand people hating, if they just really can't stand cockiness, but he's really just a stereotypical spoiled rich kid type. I think the theme here is going to be growth, it puts a lot of emphasis on him "becoming a man". There have been plenty of humbling moments for him even up till now and the head of the salon just said "Let him go. This'll be a good lesson for him" when the guard went to stop him from going to see the #1 after being declined. I think the idea is that he is going to learn. Right now he is learning he can't have everything he wants. There was also the part where he tried to enter the salon during the day when that guy told him he "doesn't know how things work". I think the theme here is growth.