Reborn in the Apocalypse: Lying Flat in a Mountain Cave with Robots

A great nation's arrogant plan to destroy humanity triggers natural disasters. At first, the heroine farms in a cave, raises chickens, and stockpiles supplies, hoping to lie flat. Later, she joins the fight to protect her family at the foot of the mountain, seizes supplies, takes over a base, and gains power. In the later stages, she saves humanity. The story starts at a relaxed pace before becoming more intense. The reason for her rebirth will be explained, and the heroine will grow gradually. She is neither selfish nor a self-sacrificing saint, and she is intelligent with a broad perspective.