Cultivation

History
Humans successfully constructed an artificial black hole in 2216 CE to solve the severe energy crisis but this caused a higher dimension to overlap with Earth, causing a spatial fold effect, leading to drastic changes on Earth, such as spatial cracks, unusual powers manifesting, and mutated organisms. Slowly, humans adapted to this new dimensional energy and were able to create a completely new battle system. In honor of the countless sacrificed in order to create this system, it was titled the Heroic Soul System. Named as such because a hero's soul would never be extinguished.

At the same time, the famous scientist, Glenn Grasso, discovered a way to use this unusual energy in a scientific manner. People called this energy Grasso Energy. Thus one's strength or Soul Power  is quantified in Grassos.