2 trinity blood volume 1's one is manga volume 1 and one is novel format volume 1 each a different story. Both in great condition. Manga:When Earth's population drastically increased, humanity, led by the United Nations, attempted to colonize Mars. During the colonization, they discovered two alien technologies: the Bacillus virus and the Crusnik nanomachines. The colonists injected the Bacillus in their bodies which transformed them into a vampiric race known as "Methuselah". 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. Continuing wars on Earth eventually led to Armageddon, the apocalyptic event that happened 900 years before the start of the story, and the colonists returned to Earth to help with rebuilding. Novel:Follows the adventures of the Special Ops Team AX, who use every brutal weapon on hand, including a Crusnik--a vampire that preys upon other vampires--to save the human race from vampires.