You imply that this movie is above the manga... If NH happens in this movie, we'll have the manga to go read? Give me a break. The manga is what matters in the end. This movie and the manga are connected. Are you missing this? Also, how is this the finale to his 15 year story? It's most likely expansion of the story in the future. Will Naruto and Sasuke fight in this movie so Naruto can save Sasuke from the darkness? Wait, that already happened in the manga
The movie is the end of Naruto's story. It's been promoted to the death based on this fact and Kishimoto even gave a statement in regards to this. So really, the movie and manga are the same thing, because at the end of the day it's all written by the original author and set in the canonical universe.
Please, don't be patronising. I'm trying to remind everyone that the beauty of narusaku remains, irregardless of it becoming canon or not.
It seems like you are trying to argue that because the movie and manga are connected, there is no possibility of naruhina becoming canon. No, a fictional story is not science, the author has the right to add retcons if he wants to. Besides, we've yet to see 699/ 700. Maybe Naruto will confess and; maybe Naruto will not confess and spend the chapter eating noodles worn Team 7 and Iruka. What we do know is that Naruto and Sakura are definitely not together in the events of The Last.
Ofcourse Sasuke ending up as an enemy vagabond is a complete slap in the face to 698. But he's simply a more useful character as Naruto's frenemy than an actual ally.