Not being familiar with the manga upon which this movie franchise is based, I have nothing to compare it to. So it is solely based on seeing the movie alone that I can review this 2014 movie.
First and foremost, I must say that the fight scenes in the movie were plenty and often quite good. But with that being said, I should also move straight on to saying that this movie was essentially nothing else than just one pointless fight scene after another.
I managed to last one hour into this movie before I gave up out of sheer and utter pointlessness to the movie. It was nothing else except fighting, and that wore thin already within the first half hour. But I decided to stick with it, as I would assume that the movie would pick up and add some story-telling to the layers. But no, that was not to be.
There was no storyline to "Crows: Explode" (aka "Kur?zu Explode"), none whatsoever. And that fact was something that the movie suffered from tremendously.
I just threw in the towel after 1 hour and I am not going to return to finish this movie, and I am not going to take the time to watch any of the other movies, because the torment of watching this for one hour was more than enough.
I can't even comment on the acting in the movie, because there was literally no acting in it to base such a comment on. I am sure that people in the movie were good enough fighters in each their own way, but it just didn't appeal to me in any way.
This is definitely for a fans of the manga, but for anyone looking for an entertaining movie that is driven by a story, stay well clear of this one.