She wanted a little sister. She also said that to her mother, Linis Harvey. So, when her little sister was born, Claire was really happy. It was also Claire who named her little sister as Liza.

The two of them were always together. Anyone could see that they were very close sisters.

Their mother, Linis Harvey, had almost no time when Liza was being born. The cause of her death is 『Deterioration of physical functions by《an unknown new virus》』.

Several fragments of meteorite fell on the earth, and since the?First Attack,?humankind got in contact with an unknown life-form called Savage. it’s one of the new types of diseases that is mostly found in young people, and even now, a decade later, no medical treatment has been established.

Originally, Linis had a weak constitution and was a child who repeatedly went in and out of the hospital.

Nevertheless, she was born with a unique brain and received a thorough special education for gifted children from an early age because of her father’s intention to succeed in the financial district of Liberia, and as a result of that, she entered the medical faculty department of Halvard University which is the highest institute of education of Liberia.

She immersed herself in the research of various diseases and made many achievements.

While continuing her research at the university after graduation, Linis got acquainted with the young president of Warslan Company, Bill Harvey, who had funded the industry-university collaboration project in the field of medical supplies.

Before long, she gave birth to a boy and two girls.

When thinking about it, that time may have been the most brilliant in her life.

Immediately after that, the?First Attack?occurred, she got infected with a disease caused by the new type of virus, and couldn’t continue to do research with normality.

Still, Linis gave birth to a girl to respond to the voice of Claire who wanted a little sister, and to save this world.

Until the moment of her death, at the laboratory of Warslan Company operated by her husband, she continued to devote herself to the research of new armament weapons——the Hundred.

When asked why she’s going that far, Linis always answered this.

– It’s all for the sake of winning the fight against God.

Claire knew about the research results of her mother after Linis passed away.

Linis made the strongest Slayer of mankind, Liza Harvey, and because of her, several countries and regions were saved from the evil hands of the Savage.