"Dark Fire, the place where a group lives. A place that is under the symmetry of the earth, and this place, no man has ever known. Whoever he is, if he finds out about this place, he will be killed by our group. And it turns out, that's true. He know. She is the person I love. My only wish is to become human. So, I am willing to turn my body into a half human being in order to feel human. Even though the ritual hurt, it was like I lost half my life. But, I've been strong in heart. And it turns out, I did. I became human even for a limited time. From there, I met a man. The son of Adam I love. And by chance, he knows the secret to Dark Fire. Everything he knows. I tried to hide it so that he wouldn't be killed. Because this is my fault. And my biggest mistake is letting my heart love the son of Adam.Dark fire, a place where there is little light. Only one torch lamp from each distance of 10 meters. After that, just install a new torch. My area is indeed dark. We sleep during the day and work at night. Nocturnal, that's what they call it. We are not animals, not plants, or humans. But, we have the same heart and feelings as humans. Only, the world separates our class, and human class. " Dark Fire Princess Note.