This is overally a pretty mediocre manga.
The behavior of people is so illogical and almost everyone acts in the same ignorant, arrogant way. Very little of the world makes sense. "Strenght = Justice", sure. But people are picking fights, often intending to kill the other, over the most of minor reasons. It surprises me that there is still a functioning society considering how they would kill eachother over the slightest of things. And it makes little sense that everyone is so arrogant since there's so many levels of strength.
To put that in game terms, it's like a guy who is level 20 going around being arrogant about being the strongest level 20 in town, therefore he can claim all the women he want and kill anyone he doesn't like, because he's like, the totally best level 20 who can even beat a level 21 in town, when the world is filled with people who are level 100 and over. So often does it occur that one of these jerks, when they end up in trouble with the MC, either calls their higher level mate or simply go "Do you know who I am? I'm BFFs with a level 25! If you kill me, you're doomed!" Did they never think that the people they start fights with has such friends themselves? Or relatives?
People are also incredibly disrespectful of people they perceive as weaker than themselves, especially if they are considered much weaker. I wonder how it must be to be a commoner in this world... just a regular farmer... it must be absolutely terrifying. For no reason, some higher level asshole comes in and kills you and takes your wife because they wanted your table at the restaurant.
The only appeal to me in this manga is that it's pretty gratifying to watch all those arrogant, ignorant jerkwads get killed by the MC.