JACK

The outbreak of World War III, the collapse of the Earth's ecosystems due to the use of nuclear bombs, has plunged survivors into underground living. Due to resource depletion, food shortages, and other issues, scientists want to study ways to travel in time and borrow the resources needed for human development from future technologies. Under such a crisis, the protagonist was forced to volunteer experimentally, and as a result, did not die in the war.
Because of his obsession with her, he went back to the past time and space to meet her. In the end, he was forced to come to the future and only found that the world of the future was full of green plants, but there was no trace of humans.

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