Return of the Martial Arts Genius Chapter 21

Demons poured from a portal, causing the Great Cataclysm that devastated the world. Jun Lee, a D-rank Awakener, fought bravely against these monsters. But as someone who inherited nothing, his potential was limited. As his life was slowly whittling away, a system message appeared, informing him that a special martial arts route had opened. This is the story of how a once-powerless man returns to seven years in the past with his stats unlocked, regaining the potential to become a martial arts genius.