Anime

When Earth's population drastically increased, humanity attempted to colonize Mars. During the colonization, they discovered two alien technologies: the Bacillus and the Crusnik nanomachines. The colonists installed the Bacillus in their bodies which transformed them into Methuselahs. They installed the Crusnik in the bodies of four test tube babies: Seth, Cain, Abel and Lilith whose enhanced bodies were the only ones able to survive the procedure.WIKI A war between the vampires and the humans.