Back before I had heard of Japanimation, before anyone was talking about Anime, and before I saw a 60 minutes Special on Manga and "Rapeman"---a friend gave me a copy of a copy of a copy of Urotskisudoji 1, 2, 3 (raw). Despite the lack of any subtitles, it did not matter, It hit me like Fallout from an Atomic Bomb. I screwed up and recorded over my favorite parts (akemi/swinging legs). Took me buying the crap they sell with the same title, much cursing,and tons of searching for working links over the years, but I finally found a copy as close to what I remember.
I judge all Current Anime, with Urotskisudoji, Ninja Scroll, and Wicked City as the Standards.
If anyone can recommend hentai that has a good story, please do so, I have wasted too much money buying crap. Favorite one I have seen recently is Black-Something-Annerose---it's like Kore Wa Zombie De Suka with the good bits left in.