Doomsday: If You Don't Regret It, How Can I Become Stronger?

Disasters are rampant and zombies are rampant. The stars sit on top of the world, and the tower of God stands tall. Terrifying creatures are born in the center of the sun, and demons dance wildly thirty thousand miles under the sea. Humanity struggles to survive in the cracks. Lin Jin awakens the regret system and shines in this world. Many years later, a wise saying spreads on Blue Star. Don't lower your head, the crown will fall off. Don't regret it, Lin Jin will laugh.