Yume Kui is about a hentai producing company where their staff being raped by many people, like all hentai's this is 18+ and contains mature content. Undoubtedly my favourite hentai of all time, I wouldn't say that I'm a fan of the rape genre, but if I had to say it, I would say this series is a hentai done right. Suzuki Mirano is infamous for making rape/ntr scenes that are fucked up in a sense where it sometimes hurts to watch, but this is not one of them. Yume Kui uses great animation and sound to smooth out the rough edges, although some scenes could havebeen longer this is one of those I consider a "must watch"

The three most important aspects of a hentai in my opinion are:
1) Animation
2) Sound (voice actor + BGM)
3) Enjoyment

The other aspects are of little importance to me, when you're watching a hentai you're seeking pleasure, and enjoyment, thus none of the other aspects come into play as much.

The animation is done perfectly, some scenes were questionable due to them reusing an older scene (there was a scene where the girl didn't have a bra on then few seconds later it's on again then it's off again a few seconds after). This is likely due to budget constraints causing them to reuse the scene, but none the less the animation is really crisp and enjoyable.

Accompanying this fluid animation is the great sound they used, both the voice actor and BGM were a great plus for me. Not sure if I can add more other than this but it was extremely enjoyable.

I thoroughly enjoyed this ;), I personally didn't mind the rape scenes too much although the second last scene on the last episode was pushing my buttons a bit, it's not too bad. All the other scenes made up for the last one for me.