"Perhaps there's some truth to the idea that the real danger of blood magic isn't that it draws its power from sacrifice, or that it tempts the greedy and ambitious into using the suffering of others to fuel their spells. Perhaps the danger is simply that we do not understand it, and that lack of understanding invites disaster even when our intentions are pure." With the magic that is dangerous to both the corrupt and the pure, both sides try their best to capture or protect those with blood magic. But with these powers being rare after an unknown massacre of most of the blood mage population, it proves to be difficult to find them. But once eyes were set upon a girl, she would not be able to save herself alone amongst a big group of people. So what should she do too protect those she love along with herself, as soon as she was assigned to be protected by a group of young heroes?