The Threat Index measures the destruction a single individual can cause without relying on external tools. At Level 0, an individual is only capable of as much destruction as a normal human, with the upper ceiling being a trained soldier. A Level 4, on the other hand, has the destructive power of a small army equipped and ready for war.
There was a time when Level 4 was thought to be the peak of humanity's potential. A single individual with the power to face entire armies on their own remained a threat for centuries, even with the rapid advancement of technology. Though that changed with the appearance of higher Level Genomes, the danger they posed was never diminished.
Throughout their long history, the Romano family had no shortage of Level 4 Sorcerers. That had changed in recent times, with the youngest generations struggling to break through the Level 3 ceiling, but they still had their old guard who continue to hold the fort to this day.
