Fighting to Survive in the Apocalypse

A female interstellar agent was betrayed by her partner and died during a mission, only to awaken amid an apocalyptic disaster on Earth two thousand years in the past, in the body of a little girl whose identity is unknown.

After realizing it had all been a dream, she decides to start over, quietly working hard amid the chaos to find a way forward and live a low-key life.

Can it really be that simple?

P.S. This is the heroine’s story of striving and growing, not an infinite-loop survival story. The heroine is tough, but she has her weaknesses too. That’s perfectly normal.