People known as Biohackers have ruled the Earth through the might of their fists and sword for centuries. They are divided into seven ranks, and each major ranks has corresponding sub-ranks denoted by the number of stars (★) :
- Cadet [3]
- Lieutenant [3]
- Captain [3]
- Major [5]
- Colonel [5]
- Lieutenant General [7]
- General [9]
Biohackers are powerful martial artists that can use an energy known as "Urja" to enhance their physical bodies and create really powerful moves that are borderline magical. However, it is not true magic.
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Due to a controversy, however, Earth went through a expedited cataclysm and many Ravett(s) were born in humanity's midst. This immediately increased Earth's status from a low-level planet to a mid-level planet and they became part of a larger Alliance that monitors the whole Universe.
Under the Alliance rule, Earth now has to fight using their Ravett(s) and compete with other similar planets for resources of the Universe. After all, Universe only has finite space and resources, while there are infinite planets stacking their claim on the limited matter of the Universe.