Prana (プラーナ purāna) is the life force of human beings. During the events of Genesis of Aquarion, the Shadow Angels sent out harvest beasts to capture human beings en masse so that their prana could be used to nourish the Tree of Life. Most commonly, the victims would be brought directly to the Tree itself and then physically fused with its structure. However, some harvest beasts were specialized to drain the prana directly from their prey, negating the need to bring living victims back to the tree.