*This review may contain spoilers*
Story 10/10
This movie starts pretty light, humorous even, but by the end of it, even a macho man is hit on his feelings. The movie, just like the anime, has great fighting sequences and such a good story telling that you find yourself immersed in it. Well used comedy relief and strong dialogues that remain true to the characters. The only negative comment I have about it is I feel Zenitsu was given a more secondary role (compared to Tanjiro and Inosuke). For example, why wasn't he able to aid when Tanjiro, Inosuke and Rengoku were fighting Akaza? Sure, he was busy keeping people safe with Nezuko, but I find it hard to believe he couldn't have been more useful even at the last second.
Art 10/10
I absolute love the animation-there is so much detail made into every character. I feel everyone is well represented. Amazing, mesmerizing color pallets.
Sound 8/10
Nothing really stands out in this matter, but it does not take away from the movie at all. Does it even need soundtrack?
Characters 9/10
2 seconds after seeing Rengoku on the train I couldn't help feeling we were about to get a character as annoying as Zenitsu. I was quick to slump him among the unimportant characters...man, was I wrong! His story and characters were so well made that in the matter of an hour you go from feeling you will get tired of him to mourning his death almost as much as you mourn Tanjiro's family, if not more. I felt Tanjiro's and Inosuke's despair as Rengoku passed away. Rengoku turns out to be a great leader, with a kind heart and inalienable sense of honor and duty.
The rest of the characters are aligned with what you see of them in the anime.
Enjoyment 10/10
I would completely recommend this movie. I actually feel it seems like another season that you must watch between 1 and 2.
Overall 9/10