As a new human born in the shelter, he has crawled around in the crisis-ridden wasteland, fought with major forces on the surface, witnessed the intimidation of space-based weapons, and tasted the fireworks of the human world. He thought he could live a stable life in troubled times with his skills, but unexpectedly, a sudden change threw him directly into an unknown world!
After experiencing life and death adventures in another world, he gradually realized that something was wrong - why did the monsters, ruins and even the remains of civilization here have a sense of familiarity unique to the wasteland? When the truth of the two worlds was revealed layer by layer, he suddenly realized that all the adventures were to guide him on the only road back home.
Intention: If science cannot explain things clearly, it is because the technology is not high enough.