I don't use spoiler tags because from my experience, people usually think it's filled with spam trash.Anyways.Dragon City and a few surrounding cities were suddenly isekai'd into another world.MC is born in Dragon City a few decades after the isekai. He lives in a somewhat poor family with a cripple mother, hardworking father, and demon (literally) little sister.This novel is filled with nationalism. Not chinese nationalism, but Earth Nationalism. The oldies that survived the isekai spread ideals of how Earth was cultured and civilized, and not to deteriorate into a typical wuxia world, they tried their best to maintain their human behaviors. Needless to say this goes completely wrong and right at the same time.The author loves to challenge MC's moral and ethical views on what makes a human with other very interesting characters.For example. If a human becomes a supernatural human that are able to cultivate are they still humans?If a human does genetic experiments to themselves with the parts of a monster, are they still a human?What makes a human?The plot is that the MC suffered many injustices before regressing with a mysterious system. And don't be alarmed, this isn't an omnipotent system that's been pulled from the ass of the author, but there's a moderately reasonable explanation for it.MC also doesn't have all the memories of his first time. Author says it's because the amount of memories suddenly surging into MCs brain would make it go boom, or something. I can understand with my limited IQ.Anyways in the future, dragon city and humanity takes multiple huge L's. MC doesn't like that, and MC family pretty much dies in the future too.MC tries his best with broken future memories, he's cautious, smart and reliable. Trying his best to protect his family, friends and humanity.However, MC has a personality problem, since he has two lives of memories, he is sometimes like a coldblooded killer and sometimes a naïve teen. It makes sense in the later chapters.You'll get annoying with MC's naïve views, but it gets better.The world is filled with violence and plots. Who is the enemy? No one knows. This is what MC has to find out, and save humanity.But what if the enemy was humanity?