From the thread linked in this thread:
Naruto and Hinata gets sepparated from the others and find themselves on an isolated island.
My Opinion: This is what leads me to believe that this is just some fan fiction, "an isolated island." Really lmao?
I hope this is just some fan fiction, AIL = Cheap way to introduce the feelings of one character towards another character, You only have to look at Esdeath & Tatsumi! G'Damn was the only good thing about that being Esdeath's Tits & Esdeath's Ice Powers, The rest was the typical love couple on an island BS! Then again I also wouldn't put this overdone setting to express love past Kishi as well as whomever else is also writing the plot/story for the movie! Lol
This is coming from someone whom loves the Romance Genre...