High Martial World! Never Underestimate a Poor Boy

About a century ago, Earth's space overlapped with another world teeming with high-energy vitality. This vitality began flowing into Earth, mutating plants and animals and giving rise to terrifying beasts that overran the wilderness and oceans, posing a grave threat to human cities.

Human martial arts rose again. Some people discovered they could absorb this vitality, temper their bodies, and awaken supernatural powers, becoming martial artists.