Monster Invasion

Monsters from another world invaded Earth. The Humanity fought back but suffered heavy casualties instead. They have only a small part of Earth to live. Before the humanity perishes, the Heaven gave them a chance. The humans began to evolve one after another and got strength to defend themselves. But one person evolved strangely. Ye Song woke up and saw the monsters invading. "System, What is my level now?" *Ding* *Host level is 999*