Bloodthirstiness... The desire to kill someone... These strange concepts for some people have always pursued humanity. Even if you strip them of all technologies, opportunities, and knowledge, they will still look for a chance to kill and maim. At best—to wound. But they will never refuse the chance to spill someone else’s blood. Even knowledge of the many bloody wars in the past has never stopped them. It’s as if the memory of such horrors simply erases...