There was a flashback of Naruto's and Sasuke's pasts. Their rivalry and their friendship, and that warmed my heart. The music was very enjoyable, and I loved the ending. It left me wanting more, and I'd recommend to any fan of Naruto to watch this OVA.
The animation was satisfactory to say the least. It wasn't horrible in any aspect of the word.
I feel... kind of meh about this. But, I think that is largely my fault. If I had watched this back with the episodes it belonged with, I think I would have enjoyed this OVA so much more. But because I've watched six months past when this OVA aired, there isn't as much tension and drama for me. Also, the OVA is so short that you hardly have time to figure out where you are and what was going on at this time in the show.
It was cool to see a music video of Naruto's and Sasuke's relationship, of their growth as friends and then the bitterness of Sasuke's pulling away. I wasn't a huge fan of the song, but it didn't deter too much from the video itself.
So, my overall opinion on this make sure to watch it shortly after the episodes it belongs near, as this OVA is meant almost to be an extension of those episodes, and not really to view separately at a different time.
Pretty dramatic beginning. Then we get the tragic flashback story of Sasuke and Naruto. The ending is the real kicker with such an epic feel. I don't want to give it away. Let's just say it leaves with you an eerie sensation and you want to say, "Whoa", "What?", and "Nice!".