If you're not into Hentai and rape fantasy fetish paired with BDSM, obviously, this is not for you.
Now, let's all remember that these sorts of anime/manga are nothing but fantasies. There are no colleges or schools out there which would possibly allow such a thing. The premise is completely ridiculous.
However, realistic portrayals of BDSM or whatever is not what Hentai is about (for this, we have that infamous kinky porn website from Frisco). In real life, there are no tentacles out to get you either (this anime does not feature tentacles, though, I was merely making a general statement here).
Now, that we have established the
fact that Hentai serves but one purpose (getting you off), let's talk about what made this particular Hentai stick out for me.
For one, it's Hakaba. Hakaba's doujinshi and manga are Grade A BDSM filth, some of my favourites, next to Harada's works. Why do I mention Harada, an infamous yaoi doujinka/mangaka? Well, both of them excel at messed up kinky stuff, and episode 2 of this features a guy getting it, not just from women, but also at least one guy. Yes, a dolled up boy gets it up his behind, from girls.
Now, if that ain't your cuppa, stay away, just watch episode 1.
If you do not mind any of this and like Hakaba's works, go for it. It doesn't even have the standard shitty porn music. The only annoying thing would be the pixels.
For any potential female viewership: Koukai Benjo features a cast of (sadistic) pretty boys, instead of the faceless, fat, ugly guys you usually come across in so many Hentai.