Plot: its a long long time ago where war is an endless disaster. The humans is at the stage of falling because of hunger, dehydration, stealing, and other crimes. But there is one facility who's checking the DNA of every child who has a blood type G+ to train them and become a soldier. And once they're a soldier they're be going to fight until they died in the war. One of the facility's member has created a G-virus which they inject to the chosen soldiers and become a powerful soldier but only few of them has fully consumed the virus through their genes and become a powerful soldier. The other soldiers that who fail the G-virus are called the fallen ones they become berserk and an uncontrollable monster who devour humans.