TL;DR: If you like action manhwa absolutely read this, it is currently (at the time of writing it has a 7.00/10) one of the most underrated action manhwa on this site. This manhwa is yet another hunter mannwa but it does do quite a bit to set itself apart from its peers. The main character is likeable and unique from other action manhwa main characters in that he is unaccustomed to being a human being. He isn't necessarily cruel but also not overly nice. With the theme of him figuring out how to exist as a human being I think this manhwa strikes a goodbalance in showing this aspect of his character through his actions while also not letting it take the spotlight away from the action.
Speaking of which the action of the comic really does take the center stage. I don't think I have read many manhwa with such a tight packed pure action heavy plot. Luckily the action is really well drawn and quite enjoyable to read and scroll past. And even with such a heavy action focus this series does a lot to keep you invested in the story and to actually have a direction which the story goes in. While the main goal is coming along pretty slowly, there is always something going on that feels important to the progression of the plot. This is a quality that is very hard to find in stories like this. The balance here is really impressive. And while cliche, the plot that is here is quite tightly written and interwoven in the narrative. The characters are often ignored in series like this but both the number of side characters and the amount of time given to them in the story is surprisingly high. They are interesting and usually pretty likeable. This manhwa leaves you feeling neutral about most of the villains and I think that fits perfectly with the perspective of the main character.

Overall I think fans of action manhwa will absolutely love this, though people that aren't too sold on the whole hunter trope probably won't be immediately convinced. This is one of the few times that I really wish I could do decimal ratings. I think this series deserves much higher than the current score it has on here when you compare it to the score of some of the less quality works in the genre. But compared to how I personally rate I would just barely not give it an 8, probably more like a 7.5, but for the sake of the argument of this being underrated an 8 make more sense so I will go with that for the review.