Staying in Another World, Silently Cultivating Immortality

Traveling between two worlds seems bizarre. The world is initially settled and seems peaceful. In 2030, unknown reasons caused a sudden disaster on the Earth Planet, alien beasts appeared in the world, and the end of mankind came. Two hundred years later, unyielding humans maintain relative peace by relying on nuclear weapons and alien beasts. ... Mingchuan, who came here inexplicably, just wanted to fight monsters and cultivate immortality in peace. However, the real end has just begun.