Ciel Fledge: A Daughter Raising Simulator is an exciting simulator with role-playing elements in a sci-fi setting. The events of the game take place in the distant future in 3716. A mortal threat looms over humanity in the form of alien invaders. Fleeing from her, a mysterious girl arrives in the magnificent celestial city of ARK-3. In the game you have to raise an adopted daughter named Sil. As you progress, you will observe the girl's condition, make various decisions in her life, solve daily problems and explore the surface of the Earth in the hope of saving humanity.