Bloodlust... The desire to kill someone... These strange concepts for someone have always haunted people. And even if they are deprived of all technology, capabilities and knowledge, they will still look for the opportunity to kill and maim. At best, injure. But they will never give up the opportunity to shed someone else's blood. After all, even the knowledge of numerous bloody wars in the past never stops them. As if the memory of such horrors simply erases... Someone powerful and very cruel. Who is conducting a terrible experiment on Humanity.