I remember years ago seeing a hentai series (I think 3 or 4 episodes) featuring all kinds of perversions. Specifically there were people getting executed by guillotine, raped (both men and women) and a guy who has his teeth knocked out with a shotgun and is forced to suck off an old man who I think was the ringleader of the whole sick thing. I remember all that, but I can't remember the damn title of it, and searching has brought up nothing. Now it's driving me crazy. Does anyone know what series I'm thinking of? Thanks.

Picture unrelated (sort of.)