Before he died, the male protagonist was still thinking about the girl he loved. Later, he was reborn with the memories of his previous life and the black technology system, and found that he had been reborn in a parallel world. Some of the worlds here were very different from the original world. After he became an adult, he found a girl who looked exactly like the heroine. He met her by chance, got to know her, got to know her, fell in love with her, and finally the family developed into a world-class technology company through its own black technology, and finally took the heroine to travel the galaxy.