I already thought I made a thread like this a few months back but apparently I didn't. After rewatching this anime for the 3rd time I gotta say I'm a rapeman fan.
First of all it is hentai so beware before watching, of course there are parodies on YouTube that basically describe the series in a nutshell for younger people who aren't allowed to watch adult material. All the nudity is censored in the YouTube video.