Strong Heart, Cold Heart

Zhou Liben, who accidentally traveled to the future due to simultaneous deaths, became Mars, a human killer in 2178. The reason why he is emphasized as a human killer is that there are not many pure humans in this era, and even Mars has half a mechanical eye. This is a future era, a dangerous era, but an era of absolute freedom. There is no sense of substitution, like settings, the language is mechanical, and there is no dynamics.