The End of the World: I Can Only Cultivate Immortality After Awakening D-Level Powers

One hundred years after the outbreak of zombies, mankind used all remaining resources to build twelve Dawn Cities. Lin Yu, a young man who has longed for power since childhood, only awakened D-level powers on the Day of Awakening. Frustrated, he became the only immortal cultivator in the world by an accident. As he grew up, Lin Yu discovered that everything was not as simple as it seemed...