Gray Wind? Wife!

Now, standing in front of you is: the most important weapon of the country, the companion of natural disasters, the master of the gray goo storm, the ruler of the nanomachine empire and the only population - Gray Wind! Qi Yuan, who returned from the world of stars, thought he was hallucinating after seeing Gray Feng in the real world. After realizing that the gray wind in front of him was real, Qi Yuan felt uneasy about the future of the earth. In order to control this "girl" who can blow up the entire human civilization to the sky, Qi Yuan had to start living with her. This is a love story based on Stars and Gray Wind with some science fiction elements.