So apparently there was a rumor going around that Nana was going to resume serialization, but there's no proof that's happening. But I started thinking, the more I watch the anime, the more I realize that this series just fits so well into the 2000s zeitgeist that I don't think it can fully work outside of the decade, and not because that's its setting. This would also suggest that, should happenstance make it so the series continues and actually ends proper, if it were to get a Brotherhood treatment that it would just not hit the same, especially if they were to *shudders* modernize it. The punk scene is not the same scene as it was back then, and the singers they got were just perfect, and there's no guarantee they could bring them back and continue to bring to IRL Trapnest and Blast; Anna, maybe, but not sure about Olivia.
On top of that, although I doubt they'd remove all the sex since that's crucial to the characters' relations and the drama surrounding it, they're likely to just cut out the smoking even though it's also important thematically because that's what they ended up doing for Fruits Basket despite not modernizing the setting and that Shigure is an adult so let him smoke if he wants to. Seems nowadays, they want to just cut out all instances of smoking in anime so as to not further "pervert" young impressionable minds, I guess, because only delinquents do that and that's bad. Also Shin's "profession" might also just not exist or even be alluded to in it, so they would have to change him up to be more "broadcast friendly".
I dunno, just a thought that anime truly had it good in the 2000s and that some series just got lucky to be produced when they did. Maybe it's for the best Nana doesn't continue so it can remain a time capsule.
Also, it's confirmed 39 episodes.