A girl with blond hair ... nashi or a 2 nd XD children.
If it's nashi what blonde is not changing anything, maybe it has just a little pink duvet.
But as I said earlier, if it is nashi and mashima has approved this novel (since it is he who writes the script), he must assume it so the nalu is canon and nashi as well.
This is because the fans have not been happy with the end for couples.
The 3 main ones were:
Nalu, jerza, gruvia.
The others were:
gale, zervis, laxmira, elfever and others.
The mange and the zervis had the end that it deserved.
The laxmira is only a "rumor" "it has not rained people, mashima drowns the fish with the laxus - lisanna which a little strange, and also with the laxus - cana that no one knows of its fate .
Gruvia is canon, but people have not had enough:
gray has given her answer to jubia just after the war, because if he makes her wait another 1 year to tell her, gray is a bastard.
But people wanted to see how they acted as a couple, lucy in the last chapter would have given some info on that.
Outside it do not do it, we do not know how they are, are they living together? , embrace? , on the other hand it is on they do not sleep sets since gray make the "proposal" "in the last chapter

XD.
I think they are similar it's just that Gray no longer discards jubia when she sticks to him and he holds her hand in the street, but Gray is bothered by it.
That's how I see them as a couple.
For the jerza:
I am a little disappointed by this end, because I thought that erza will have at least one engagement ring on the fingers, now that jella is free.
Certainly the given end is open and that its will happen because jellal has no more excuse for not declared a erza.
But I would have liked to see this ring, that end for them would have pleased me better .
For the nalu, me it goes me but misses a very small thing, which would have had to see in 'bonus'.
The end as it is, is like that of haru and elie, it is a demand in indirect marriage.
That's about we were not going to see natsu kissed lucy, nor declared because natsu is an idiot.
But we see that Lucy is disappointed because she was expecting something natsu so here it is.
But the sentence that natsu says comes back and asks him to live with him forever, but the fans would have wanted something less indirect, more concrete.
And so the little thing that I said that had to be added is a sentence that lucy would have said to natsu when she was stuffed.
Natsu is trying to put her to bed but she does not want to and he swings words and everything and say that she loves natsu with all her heart.
She is stuffed but makes a serious head saying the story of wondered if she has not a moment of lucidity in his drunkenness.
And then she goes back into her drunkenness .
And that this "bonus" scene happens with happy who asks natsu why he has not said lucy that.
And Natsu replies that later he will see, for the madman, that she will not believe and XD.
(as an example I did a thing in pau near similar in the end of my fic )
That's all, it would have pleased the fan and would ask less with mashima to know if couples are canon or not.
All that to say that the secondary couple, that people not interested too much must be honest, elfever voila without comment XD, had good stuff for the final.
While the main couples miss something to make the thing perfect.