Demon Slayer is about a kid slaying demons to cure his demonic sister.

This series is flawed, but in a strange way that I think shows a new era for modern shounen. In the same ways Deku is a response to people being critical of powerful protagonists like Naruto, the pacing of this series spits in a shounen like One Piece's face. In many shounen, the pacing will halt with filler while the author plans the best parts. Demon Slayer, however, is blazing fast with its pace. It only slows down to let the main characters power up. Other than that, this series is non-stop action. While many will like this, I feel this pacing leaves the characters are underdeveloped. We really needed to slow down and develop some of these characters more, because all we really ever see them do is fight or train

Tanjiro is a good guy who does good things, but often fails. This kind of character can work in a short story like this, but the problem is his improvements as a demon slayer is way too quick and in short bursts. If the series really showed him getting progressively better with each battle, going up one rank in the demon slayer in each major battle, I feel like this would've worked better. The same goes for Zenitzu, who is a coward who loves girls. This is as far as his character goes for several volumes. We do learn a bit about him, and his final battle is somewhat satisfying, but just like Tanjiro, I feel like his progression is a bit lacking, and he's pretty annoying at first. Inosuke is the best character. He's funny and unique for the average rivalish character, and he was often enjoyable. His development was also simple but effective. The main villain is pretty plain, but his introduction is great and he's pretty intimidating.

The biggest problem with characters is that they pretty much only develop when we learn their sad backstory. Everyone has a sad backstory, I'm not exaggerating. Often, we get some development AFTER they die. Why not develop them overtime while they're alive?

The battle system is like hamon from Jojo except with elemental powers and swords. They can honestly be pretty entertaining, but they don't redeem the problems I have. The art, while simple, has a great style and is well drawn for the most part, especially near the end.

To sum up this series, it can have some fun action and battles, but most of everything else is underdeveloped. The anime is better on accounts of the excellent animation and direction (Also, the 'hype' moments are better in it). It can be fun as an action series, but never enjoyable as an emotional story. It doesn't get any emotional response from me whatsoever.

One more thing is that while I think this series is a pretty average manga, it could work well as a movie or series of movies, as characters are usually simpler in movies anyway. It wouldn't be perfect, mind you, but I could enjoy them a lot, and probably show them to my non-weeb friends. I haven't watched the mugen train movie that came out recently, but I am hopeful that I'll enjoy it.