No harem + technology + no system + apocalypse + underground shelter + genetic exploration
The rise of the planet stems from a technological explosion. During the outbreak, due to human error, the ground was completely infected with a certain bacterial virus. Humanity's life and death depended on it in an instant. There was an urgent need for a technological explosion to send humans into space to find a habitat for civilization.
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.
