This series came highly recommended. It's visually appealing, and every once in a while it hits a note of emotional intensity that strikes a chord in me - but mostly, I think this is not my sort of thing.
Two 20-year-old women, space cadet Nana Komatsu and aspiring rock musician Nana Osaki, end up sharing an apartment in Tokyo - and soap opera ensues. It's fairly tasty soap opera, but I don't identify with either character. It's me, Nana - not you. (There's bit more to it than that - if you're interested, I go into it in more detail below the cut.)
I'm slightly tempted to give it a try for another volume or so. Many manga series seem to have less-than-inspiring or even downright rocky starts: Samurai Deeper Kyo, Saiyuki, and Fruits Basket all underwhelmed me at first. And in fact, rachelmanija warned me that I'd probably have this kind of problem with this series. So have I given it a fair try with three volumes - or not?
( There's more ... but mostly about me & book preferences etc., rather than about Nana per se ... )
ETA: Eeek, I got the Nanas' names mixed up! (And no one told me ... :-( ) I have fixed them now in the review, but I can't do much about the comments (which already have comments attached to them in turn). So please note that they're still mixed up in my answers (below) ... .