There is indeed plenty of captivating action in the anime, the animation during the fights is actually good, and the movements are fluid. However, behind those fights, there are many plot holes. The universe in "Solo Leveling" is quite dry, considering it's a fantasy; there were more opportunities for interesting things that could leave you in awe, but it ends up adding random stuff instead.
Now, let's talk about the most obvious things that can't be overlooked. Our protagonist, Jin-Woo, is very poorly written. Apart from the fights he's involved in, there's nothing impressive about him. Moreover, the secondary characters are even more pathetic; they barely get any attention and aren't developed at all. We see certain characters occasionally in the series, yet we know absolutely nothing about them. I'm surprised the author bothered to tell us their names.
The plot in "Solo Leveling" is the worst part of the anime. The story itself is very predictable and full of clichés/goofy moments. Most events are easy to anticipate, which can be boring at some key moments. Yet, some moments unfold too quickly, some feel like you're climbing a wave but they're not that important, and the truly important moments feel like sledding down a hill at 50km/h.
Despite its potential to explore certain profound themes (power, identity, and morality), "Solo Leveling" fails to do anything and instead opts for mediocre spectacle and gratuitous violence. Furthermore, the violence feels truly "felt" only at the beginning of the anime. As the story progresses, it feels like even if our protagonist Jin-Woo were hit by a train, he'd instantly get up because he drank a magic potion.
In conclusion, "Solo Leveling" is a very disappointing anime that brings nothing new but had gigantic potential. The author wanted to deliver the same dish but quality>quantity. - fights without a plot, "cool" characters, and more fights. A waste of time
