While I'm not a huge fan of the pairing, I have to admit that this is a most excellent manifesto! You obviously spent an incredible amount of time on it, and you have plenty of evidence to back up the pairing. It's a shame that Takumi gets no love in fandom, but at least he gets some Nana loving, so I'm sure he'll survive.

Anyways, this was a wonderful manifesto, and I really enjoyed reading it, regardless of my personal pairing preferences (though I'm not really in NANA fandom.) Great job on this, and hopefully this will help convince others that Takumi/Nana really isn't bad.