
Here we go again Humans bad, Monsters good. This trope is starting to get old and predictable.

At least when it's the monsters who are the baddies it's far more interesting how small insignificant humans can fight dangerous monsters using ingenuity, skills, and teamwork even if the humans are op. It's just personal preference I guess.
Just an opinion but to me killing humans is like killing Kids in a barrel, at first it's good for shock value but after a while, it becomes like a one-sided massacre the feeling gives me is like argh not this again. Don't get me wrong killing in self-defense and defending others is fine but even after the enemies gave up he still showed them no mercy, evil or not they could've had families what if they want vengeance. He's no better off now when he was killing monsters and orphaning their kids. I guess that's what really irks me. But it's to be expected in a human turn demon king manga.

Well, in almost all stories that monster are bad humans are good, humans still kills monsters that are good or only following orders!!!
I feel the troupe of humans being the bad is refreshing, but many people hate it because people don't like stories of himans being killed!!!
Also, monsters have families!!!

I agree...though we try to be altruistic, humans are in essence greedy and selfish. Now that all depends on the amount, and whether we can rein it in. Also, the way the humans act in the manga seem to portray the way colonists were in the Americas where they assumed they were the superior race and etc.

IKR they over hype the humans as bad guys while overly made the monster sweet, kind excepting, and lovable. Can they portray that some monsters love the taste of human flesh which why so many adventurers fight them? That Shows that evil can exist on both sides. And personally, the ML is a frickin idiot, no wonder he relates to those dumb monsters.

I wish there was an interdimensional police can arrest this asshole!!

Point of the story is the Hero blackening into a villain for revenge. Don't think the twins could be redeemed. They were raised in a twisted environment to be sociopaths. Their gleeful torture and murder of animals and implied humans demonstrated their already degenerate characters. Children ccan be just as dark and twisted as adults. There are a shocking number of murders committed by young children from normal upbringings. These are not children that could be trusted in society. At best they would be institutionalized.

Then, explain to me about what if kids who are under 15 years old that killed lots people, but released shortly because they are kids/underage but after the released, was caught again for killing more? You still think because they are kids they shall be forgiven? I say better kill them for the sake of other.
What if you are a judge, and you released a kid who killed his younger sibling, then that kid who got released, killed his neighbors little friends as well? If that will be the case, I believe your name would be in the 'People MC Gonna Kill' Lists.

I not saying he should let them go free unpunished, but kept as a slave, or something teach them right from wrong, give some form of punishment befitting for them at the same time rehabilitation. But I see you're point, it'll be too much hassle, we should start killing child-soldiers, children of ISIS and other terrorist groups, cartels, and so on. F**k the civilized route. I'm guessed l'm just wired that way to be protective of kids.
Boring insane cult society. Great another humans are bad manga, this is as tiresome as third and fourth wave feminisms war on all Men.
Ok so this has nothing to do with feminism but to do with mob theory are you even reading this
(shrug ) I thought I might like it
yikes bud, sounds like someone doesn't know what feminism is...
Also ignoring the "feminism is war on all men statement" why are you so averse to the idea of a manga illustrating the "mob mentality" in a bad lighting? I mean I understand that it can seem like artificial padding if done in a shallow way, but this manga hasn't even really kicked off (so the development of this perspective hasn't really shown yet) so why so disapointed?