Oh, I'm pretty sure this is an adaption of a WN that I've read, and a completed one at that.
It was actually fairly interesting for reasons beyond the whole gender ratio (and sex) premise, but failed to really do anything with any of the more interesting plot points it created; one such plot thread was that the so-called male antagonist of the story actually had a really good reason for hating women -- he felt like an animal in a zoo. He was completely right in his thoughts as well, with it being revealed that women would purposely separate men from each other and ensure there was no male comradery, so that the men would be entirely dependant on women. It is also revealed as the story goes on that men are separated from their mothers at a young age, and it's apparently quite traumatising for most of them, but the government ignores this issue because, again, it makes the men more dependent on the women around them -- and of course no boy ever meets their father.
Despite all these reasonable issues being brought up... nothing is ever done about them, nor are they addressed. The antagonist is just demonised, and portrayed as a 'le bad' sleezebag.
And that's just one single character and their plot thread, and there's like another 5 of these that are just as poorly handled... if this is indeed an adaption of the work I'm thinking of.
Ah, found the story I was thinking of: It's called "Living in a Class-Based World".
Seriously though, if this isn't an adaption of that story, it seems to be borrowing WAAY too much from it, and this is just the first chapter.