Exactly man, it seems that people reading this don't understand that to unify China they will need PEOPLE, you won't achieve that by executing unarmed soldiers and inciting hatred among the Chinese population.
killing soldiers who are trying to kill you is one thing, killing and torturing innocent civilians who have surrendered is something else entirely, that's where evil differs from sadism
Shin knows he's not a good guy and that several people died at his hands in the war, but the line between that and the things Kanki does are totally different, Kanki is a complete psychotic lunatic who is only in the war to satisfy his sick pleasures.