Blue Lock: Episode Nagi

To begin with, this movie could also be called "Episode Reo" because his character is developed just as much. We get to see how he meets Nagi and their progress in Blue Lock, but this time from their perspective.

Positive Points:

A first part without football. Some might not like it, but I found it refreshing to see character development outside of football. It makes them feel more human, and we get to appreciate them more.
Reo's development. If you don't watch this movie, this player will probably remain forgettable for you, as he doesn't get much spotlight in the ... main series. But here, we see him from a different angle, and he actually became my favorite character thanks to this film.
The relationship between Reo and Nagi. We learn to appreciate the bond between these two and understand much better why Reo felt betrayed when Nagi left him in Blue Lock.
The OST.
The animation is on point.

Negative Points:

The Blue Lock part isn't interesting. Some might enjoy it since it features matches we hadn't seen before, but for me, it was forgettable. I'd rather rewatch those moments from Isagi's point of view.

Conclusion:
You'll likely enjoy the first part, which focuses on the meeting between the two protagonists. You can skip the second part if you're not particularly a fan of Reo or Nagi.

For anime´s only you´ll probably enjoy this movie as it works as both a recap and you get to see more of Reo and Nagi´s (borderline homoerotic) relationship, including its origin.

However having read Episode Nagi´s manga, this movie feels like a wasted opportunity, as it only covers the first 24 episodes of the anime. Meaning it´s going straight to the U-20 match, missing both exciting matches along the way and crucial development from certain characters (especially Nagi and Barou).

Moreover, the animation feels lackluster and the art style does not improve much from the anime.

In conclusion, while decent, the movie works more as a recap ... than a stand alone product. It´s still enjoyable though.

Blue Lock: Episode Nagi is…………………………..eh. Do you love Nagi? Have you forgotten some details from season 1? Do you wish to see more standard animation from Blue Lock compared to the atrocious animation in season 2? If you said yes to all 3 you’ll somewhat enjoy this movie….somewhat. I have no idea why but I really didn’t felt Reo and Nagi clicking any more than their couple of scenes in Season 1…which is a bad thing because this is their movie. I only felt a sweet moment between the two kinda ti’ll the last of the movie. Reo I’d say doesn’t get any more depth ... into his character than we knew from season 1, and the new info we learned about Nagi that was worth remembering is that he has a pet cactus. (I found that sweet XD) There’s another scene with Nagi that is also nice but that’s it.. Also Kira! We see him again….. I never knew something could have a faster pace than Chainsaw Man either but this movie did it. We go from point A to Z in a flash. Oh wait i forgot there’s actually a character that did get more noteworthy info but it just lasted minutes……which was Zansetsu? (I think that’s his name) It’s a shame that we never got to meet anyone else from their team….their just there. It’s also kinda lazy how they reuse some scenes from season 1….. There’s no new info that makes you go wow! This could had been an special rather than a movie and…. I can’t imagine this performed well in theaters………overall.

TLDR: Just a recap of season 1, 2+ additional decent looking blue lock animation and Nagi has a pet cactus.