This opening has a catchy song to it and the animation looks great. This is a great way to show that they're preparing for the war.The only reason why I'm giving this opening a B-ranking is because of the song and how the characters are just preparing for the Fourth Great Shinobi War. No Sasuke, no angst, nothing complicated.
Sasuke's reflection was in the opening, but Naruto stepped on that, lol. 😶 That's a good thing though, because majority of these openings and endings is him trying to tell Sasuke: I'm not going anywhere because you're my friend.
Overall ranking, 8.5/10.