The Underworld Apocalypse

When nuclear bombs destroy the world, zombies overrun the land, and the Heavenly Palace looks down upon all life from the Moon Palace, his teammates shove him out to feed the zombies, and everyone calls him a "useless loser." He awakens the most useless ability, the "Spirit-Seeking Eye," which can only see ghosts. Everyone says, "You won't live to see tomorrow."

But he survives. He emerges from an ancient tomb in the frozen wastes and subdues Meng Tian, a ghost general who has lived for a thousand years. He slays his way from the Nine Provinces to Japan, killing the Yamata no Orochi; from the Western Continent to the Star-Spangled Land, wiping out a three-headed radiation dragon; from Earth to the Moon Palace, bringing the tyranny of the Heavenly Palace to an end; and from the Solar System to the center of the Milky Way Galaxy, driving back an ancient behemoth that devours the stars.

He wasn't born a hero. He was simply someone who had been abandoned, fighting with everything he had just to stay alive. Then he protected everyone else who, like him, didn't want to die.

"The Heavenly Palace sees us as ants, but enough ants can bite an elephant to death!"

Three million soldiers in the Galactic Allied Forces, twelve interstellar civilizations, and an ark floating in the sky: he rose from a useless loser to become the Lord of All Worlds in three years. Protecting it all took a hundred years.