This manwha is very bad. It has no coherent story, no worldbuilding, some of the most 1 dimensional and shallow characters I’ve ever seen and a cliche, self-insert protagonist with nothing but a “haha I bring people back as slaves” power set.
If your trying to turn your brain off and read a story with incessant violence, that serves nonpurpose other than to elongate the series and milk money out of the readers, than this is for you. If your trying to read a good story with interesting characters, good worldbuilding and a good plot- than go read Hardcore Leveling Warrior.
HCLW trumps this series in terms of literally everything, including art.