I Really Didn't Mean to Save the Earth

Across the boundless universe, powerful civilizations are as numerous as grains of sand, and a weak civilization’s very survival is a stroke of luck.

As a human from the future, Lin Yu has witnessed the cruelty of the universe firsthand and knows that the enemy cannot be defeated. So when Earth faces invasion, all he wants is to flee to another human world.

But with only three days left before the invasion, the System gives him a mission to save Earth…