Are there any NTR hentai manga/doujins (or OVAs, although I doubt there are any like that) where a girl is getting raped by a guy or a group of guys (and it really looks like she's getting raped - she doesn't enjoy it in the slightest), while her boyfriend is forced to watch, but he gets aroused from seeing that, preferably while also feeling like shit because he got a hard on in such a situation?
I know, it's very specific, but this kind of scenario really makes me diamonds for some reason and I'd really like to see it in hentai form.