Let's face it: when we pick up hentai we usually don't give a damn about the backstory ("plot", heh) and characters. Especially, if we pick up OVA with title such as "Rape! Rape! Rape!". Therefore, you can expect that the plot and characters will be underdeveloped here, and you are correct - at least to some point described later. There is, however, one big "but" for this one. Generally I divide hentai into three groups: 1) comedy: you can't help yourself but laugh at some crazy scenes. 2) generic: boring scenes, trite structure. 3) unsettling: there are morally disturbing parts. "Rape! Rape! Rape!" definitely falls into last group. It is brutal,aggressive and nasty OVA. Watching all those girls in pain is just too distressing (I skipped few scenes). Some people claimed, that there is no development at all - well, I dare to disagree, since I watched all the episodes to the end, and it gets better*. If you're up to something nasty and repulsive for whatever reason, this OVA is for you.

Overall enjoyment is "7", which depicts strength of my negative reaction.

* really. It concerns almost exclusively last episode, though.