Rosha Lewen, an extremely ordinary girl. One day, a half-human monster, Ramia, invaded the village, and all her life was taken away. “#777, did you wake up?” The moment Rosha opened her eyes after the pain of death, she was in the ‘Golden Dawning’, which was called a pseudo group , that greeted Rosha. Knights to protect the Son of God who will save the world, Rostelier. Rosha was saved from them and became Rosha Rostelier. What remained for Rosha was a feeling of guilt for surviving alone, a tenacity to find her younger sister who may be alive, and… “… … I will tear them to death. All of those monsters, all without exception.” There was nothing but anger.