im not op, but i too think the art here is ugly.
what i consider "good" art is usually found in manga. there tends to be a lot more creativity and depth to manga art.
but some of my favorite manhwa art styles are:
lost in the cloud, white blood, ennead, 19 days (in recent years the art totally improved), eleceed, jungle juice, nerd project, Warning! Beware of the Dog, Gorae Byul - The Gyeongseong Mermaid, as well as work by Park do-han and work by mingwa
19 days didnt start off with amazing art, but the growth is insane so yes i would say the newer 19 days art 100% better than this.
the anatomy is more dynamic and more natural then anything in this story.
and the details and expressions and lighting...the skill difference is obvious.
(im not even going to talk about plot.)
The art is ugly a ton of the time, the plot had some potential but wtf is this writing bro