He stood there drenched with the blood of his enemies, enraged, lost in his thoughts and actions. His sword is raised and ready to plunge it into the heart of his next victim. I am the guardian for this idiot and he is . . . my twin brother. Half human and half demon, with intertwined DNA, we are the only ones of our kind. We live under the supervision of an organisation that is devoted to protect humanity from demons and other forms of evil that are dangerous. Our mother was part of the organisation before she died, but we don't remeber her and no on will tell us how she died, or who our father is. Fortunately the organisation allowed us to live because we are not considered to be a threat, so we became demon hunters. But how long can we keep this up for or do they have something else in store for us?