Pretty solid 7/10, the story is coherent, the characters aren't annoying, and the art is above par compared to most works in the same genre. A big plus this webtoon has going for it over it's contemporaries is the artist actually understanding how to draw action scenes that make sense and look good.
There isn't anything particularly special about this work, but it's not offensively bad or even mediocre either either, I'm looking forward to more chapters.