Some people said its actually the original... It (the novel) was made in 2015 (way before other manhwa)so those novels/manhwa are the one to take it as an reference , but I read the reviews and people said
SPOILERSSSS AHEAD - - - - - - - - -
that the story focused more on side CHARACTER, Showed less about the MC and most of the time MC got backstabbed for saving/helping people in the journey, as he mostly couldn't kill them at whim(his friend told him not to kill unless necessary)and the writing wasn't great (they weren't sure if it is because of translator or the story itself is like that, it lacked some qualities)
But some praisesed it for being really great
I didn't read it first hand so my information can be inaccurate
Honestly IMO it doesn't really matter which copied which first as long as the plot execution was done right because there are a lot of originals out there being overshadowed by the later ones due to some authors who can really write well. Proof of that was solo leveling.
Anyway it's great that this manwha would focus on others characters instead of the the MC hogging the limelight the entire time like one punch mind writing where it didn't entirely focus on Saitama. Imma let this marinate about 20 or 40 chapters and I'll judge after that
I can already see the troupes derived from the top tier action manwha in this. Either this could be good or it flops. We'll see how this goes