The last confirmed sighting—if any such thing can be called confirmed—was both ordinary and impossible. A late-spring night, a laundromat’s hum, a man folding clothes who found a folded sheet of paper tucked among his shirts. On it: a single sentence in Kira’s impatient hand. It was a reminder, curt and kind. It read: "Leave something you wish you had found." He folded the paper into his pocket like a prayer.