Has there ever been a series which realistically depicted the social stigma that would come with an incestuous relationship?
Well you just posted it. You might as well have posted "hey /a/, let's have a YnS thread". But no, you had to be a passive aggressive little faggot didn't you? Fucking kill yourself.
I could imagine if they made something about being shunned by society for the entire series and how they deal with it. It would be like some twilight tier teenage emo drama. That would be horrible to watch.
Remember girls, if your onii isn't making the oranges roll off the table, he isn't loving you right.
But she doesn't have a ass like this
By the end of it, no one is friends anymore.
What's the deal with incest in Japan anyway? Is it just an otaku thing? Because it seems like every romance anime or VN to have a sister has her as a love interest or potential love interest in some capacity.