Onmyouji Ayakashi no Megami: Inran Jubaku

tl;dr: Great metaphor about corruption and fighting for power.

Ok, now that was confusing...

Story:

A Goddess is trying to become more powerful by having sex with a man, but she is not the one doing it. Instead, it's her all-time nemesis or something. Four more goddesses (namely, the Four Symbols of Asian mythology: Suzaku, Seiryuu, Byakko and Genbu) try to stop her, but end up having sex between themselves, and some shenanigans you'll have to watch to grasp all its... weirdness. That ending though.

Art:

... Cute anime animal girls doing it with each other, and giant monsters. Your call.

Sound:

It was pretty decent. At least there's not an annoying noise like the one from Futanari Idols...

Character:

It's 2 chapters long, there's not much time to develop characters. The best one in that regard would be Byakko. Decent, no one is annoying.

Enjoyment:

One moment you are fapping to a good scene, the other your scratching your head trying to make sense of anything that's going on. Weird, but lovable

Overall:

It's hentai, what did you expect?