Rakuen no Chloris

A catastrophic explosion at a research facility released a deadly poison, causing a drastic decline in the human population. Dr. Murakami finds a survivor named Mae, who was involved in the explosion and now appears as a girl in her early teens, though her body is unstable and nearing death. In a world lacking young women, Mae's existence becomes crucial to humanity's future. The army deploys an artificial lifeform known as "the Daughter of God" to deal with her. A struggle for survival ensues.