[Aviva]

So, I just finished watching NANA and I can't believe that it ended so bad, so unpredicteble...is that realy the end or not?does anyone of you know, or do i have to realy read the manga?...the ending was neither sad or happy, I don't understand what happened in the end to all the caracthers...I know that the manga is still on going...so who knows if it will be a second series of NANA, 'cause I know that it has been almost a year since it stopped airing the anime...or that is what i've read on the internet...