One day, Odasaku receives an assignment from an unknown person, to protect a girl. The girl looks about the same age as him *The girl has brown hair and her features appear blank and neutral, but there are strange glimpses of warmth in her eyes. She and Odasaku are in the middle of the street, in the same place. Which the unknown person asked Odasaku to wait into * Odasaku approaches and speaks to her in a calm and slightly cold tone: So you are the one I have to protect?