“The animation here is pitch-perfect! The colors and movements leap off the screen. They are so incredible to look at. The battles and duels in this are some of the most fast-paced, cleverly laid out scenes I’ve seen in any anime. They’re all creative, filled with energy, and get you hyped as all get out. This aspect alone makes this series a must-see.
Though what I love most about this anime is the characterization of the characters, particularly with the villains. Even though they’re portrayed as these horrific monsters who have done disturbing things, they’re still given depth, so you know who they were and why they do the things they do. This is not to say there isn’t a big bad in this series, there definitely is. I’m just saying that the conflict here is portrayed as a grey area. One where everyone, including the protagonists, have to do violent acts for the greater good against these nightmarish creatures.” – Spinnaker
“Many of the battles against demons are spread across multiple episodes rather than a need to resolve each fight by the time that the credits roll. Demon Slayer is more concerned with characterization, for both its heroes and demons, so battles can mean more when they do happen. This means that some episodes are less productive than others, but it helps the series find its voice more quickly as a result.
It’s of course important to have protagonists that feel real and not just come across as anime stereotypes, but Demon Slayer especially excels with how it humanizes its villains. The episodes devote lots of time to who these demons were before their corruption, how they got like this, and what they sacrificed as a result. It’s a creative way to unify the heroes and the villains. This level of empathy doesn’t stop Tanjiro in his mission to eliminate these monsters, but it sometimes gives him pause as he considers how his sister is now in the same situation. ” – Den of Geek