Monster hentai name

File: fucker.png (6KB, 240x182px) Image search: [Google]

6KB, 240x182px

So I was very young when I saw this shit and it kind of scared me because I regularly wouldn' watch any gore or even hentai, fucking know very little about anime...
It is about a monster that's all black with some kind of scales that starts fucking a girl with a rather dark hair color and then the fucker gets out its real dick and fucks the girl so hard she gets ripped in half. I don't want to see it to masturbate so don't give me any other recommendation of similar hentai, it justkind of bugs me that I can't figure out what happened next because after that scene some guy dressed like a hero appeared and starter flying after they told him there was a monster and shit so I can't really stop thinking about it.
I don't have any images about it but I remember the monster looked like the mourning wood from terraria which is on the image above.
Sorry for bad english, mexican subhuman here.