Based on a novel with the same title written by Ono Fuyumi released by Kodansha, the story focuses on Yoko Nakajima. She was a girl who had pretended to be the honor student in her school and also at her home. One day, a man named Keiki showed up suddenly, and Yoko was called "Lord" by him. Her destiny began to move greatly from that time.
She was led by Keiki, and the place she had reached at last was an another world where 12 countries existed. Moreover, she lost sight of Keiki, and didn't know where even to go. An innumerable specter has obstinately attacked such Yoko. Furthermore, she received harsh treatment from the people whom she met. Through the survival in the another world, she regains "Strength to live" which human originally has.