This one is quite good. Even though it's called "prologue" and "epilogue" the truth is that, as far as I can tell, it's the whole story. Character models used in this animation are pretty great, both in quality and design with beautiful but realistic bodies (maybe with the exception of the dick size but that is a genre trope). The animation itself is fluid and varied, not the classical reuse over and over again of the same thing, and has a lot of details in facial expression and elsewhere. The dub (in japanese) is pretty good as well, as long as you like the peculiar sounds japanese women do through sex even (aparently) when it's consensual (which this one is not for a long part of it, playing with mind control as a basic plot device).
So, all in all, good shit.
So, all in all, good shit.