User blog comment:ArtsAndAnime888/The future of Fairy Tail- NaLu/@comment-3987368-20140731070648

As it was said before, the "Nashi" was a joke.

To clarify the Lisanna issue, and that the producers never convinced him to bring her back for her siblings, I'll post this, which ChaosKnight translated a while ago:

That portion of interview went something like this:
 * Interviewer: The director did really well regarding the changes to the characters in the anime. It must be because he's understands the series so well that he was able to express it so well.
 * Ishihira: Well, I am a fan (of Fairy Tail) from the start.
 * Mashima: Thank you so much.
 * Ishihira: I really do like it. (laugh)
 * Mashima: He did really well to bring the story to a full circle. Especially about the part on Lisanna's flashbacks, it was excellent.
 * Ishihira: I had to brainstorm a lot for that particular scene, since I was trying to figure out the intentions behind what wasn't drawn in the original work.
 * Mashima: Actually, I didn't have that sort of intentions (Laugh).
 * Ishihira: (Regarding Lisanna's plot in the anime) Based on how it was done, it would've been better, actually, had Lisanna not died, that's also a personal wish of mine.
 * Mashima: I, err, have no comment on that (Laugh).
 * Ishihira: But then she showed up in Edolas, didn't she? It made some people feel, rather unexpected...
 * Mashima: That is true.
 * Ishihira: And thanks to her appearance in Edolas, what I had planned in my mind just went up in smokes (Laugh).
 * Mashima: But personally, how you guys want to edit (the plot and/or the characters) is fine.