I'm sorry but I can't say I agree with the other reviews for this manga.
I've watched the anime - and, actually, I didn't even see all of it because it was just too random and weird for my taste (I think I stopped at Nanami's egg... and that pretty much speaks for itself), so I was a bit skeptic about reading this manga.
However, my absolute love for Chiho Saito's works (Kanon, Kakan no Madonna just to name my favorites) made me want to read this one as well and... boy, was I glad I did!
I loved this manga. Absolutely loved it. And, guess what? It actually makes sense! I happen to think the characters are actually better developed in the manga than the anime, despite it being so short (especially Touga - who remains my favorite character - and Anthy, who is actually not as passive and boring as she appeared in the anime): you actually understand their feelings and why they act the way they do.
What I do not understand, however, is why the anime changed all the relationships:
First and foremost, how did Juri end up lesbian?? Not that I have any problems with it, but I happened to think her story with the guy to be quite sweet and romantic. And the fact that Juri was crushing on Touga - if only for a while - and Miki was in love with Utena? And Saionji really head over heels for Anthy and no one else?
The feeling I got of the anime was that they pretty much killed all the normal relationships and turned them all somehow more perverse (although "incest" feels like a really big word to me, even for the anime;
I can't be sure of that because I didn't watch all of it, but as far as the manga goes, there are no mentions of incest unless you refer to Anthy and Akio... but then again, if you've read the whole thing, I'm sure you must have realized that Saito-sensei is talking about deities... surely you know, for instance, that Zeus and Hera of Greek mythology were brother and sister? And all the shoujo ai! Juri is NOT a lesbian in the manga, and neither are Anthy and Utena... at least the way I understood it, they were attracted to each other, but I never felt this attraction as "romantic"... Utena is torn between Dios, Akio and Touga, while Anthy has been in love with Dios all along, and thus obeys Akio since he's "part" of Dios...
); but then again this is probably just me. I suppose it depends on how you interpret the story: I didn't find any GL nor incest here.
Definitely recommend it!