tl;dr: Great metaphor about corruption and fighting for power.
Ok, now that was confusing...
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.
Cute anime animal girls doing it with each other, and giant monsters. Your call.
It was pretty decent. At least there's not an annoying noise
like the one from Futanari Idols...
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.
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
It's hentai, what did you expect?