Two girls named Nana meet and live together in Tokyo. They seem very different (looks, personality, dreams...) but are equal in their loneliness. This anime shows their growing: inside and with others.
It's amazing how realistic Nana can be in the way it portraits complex human relationships. It is not always happy and shinny, but that only increases how genious Ai Yazawa really is. I'm not going to tell more because I don't want to be spoiler, check it out yourself ;)
Art is amazing, I find it very beautiful. The caracthers have a high sense of fashion (actually the mangaka who wrote Nana studied fashion) and are very original in the way they dress.
The music, which is plays a important role in this anime, is also quite good.
