I like your comment, it’s true that the so called “villain” killed many innocent people. But that’s the same to the evil people even if he kill the evil people. Innocent people will just turn on him for killing “others”, that’s why in this story. I don’t think there’s either a good or a bad side, both side have a story. I prefer the villain more. I hate to read problematic journey to kill other heroes instead of helping them regain their right mind. No one want to be abandoned, but others blame and blame. And it’s not even their fault for being transport to the other world to help others, it’s disgusting. I feel sorry for the fictional people in there.
OK so I'm gonna state something that is purely from my belief. I understand their anger at how the world turned against them, but to take people's lives especially when they're innocent is uncalled for. Also the new hero or the hero of revenge, is becoming exactly what he hates, which I'm pretty sure he knows. I feel bad for them because they desperately saved people and had people from different worlds love and care for them, only to be monsters in the world they wanted to go back to. I think they're all on the grey with a light shade of black. Their backstory doesn't justify their actions but it makes us understand their anger and why they did what they did. I think I like how this shows that they are neither good nor bad, and that the world simply shaped them through the use of despair. I don't really think it's poorly executed if the authors point is to show people that villains aren't truly villains and heroes aren't truly heroes. Just people driven to a certain madness and extent. I like this it has potential!