When Lucy/Kaede was still a child at the orphanage near Kamakura, she began to feel her future vectors manifest themselves, and also began to hear a voice urging her to take vengeance on those who delighted in tormenting and even betraying her. After the bullies killed her puppy and were killed by her in return, young Lucy unconsciously fell to the whims of the voice's murderous will, resulting in her entire killing families for a place to stay even as she befriended Kouta. After Kouta's seeming betrayal of her trust, Lucy surrendered entirely to the will of this voice, resulting in the murder of Kouta's sister and father. Over the next five years, she engaged in a stealth campaign, using her vectors to cause fatal heart problems in some Kamakura residents while infecting the fertile young