Secondary Nature—Astral Chart!
The ultrasonic sounds combined into a cluster and impacted the Boar King's body, rattling him down to the minutest of cells. It wasn't a mere sound attack, but one directed at his weakness. The Empyrean Tusk group of 24 constantly varied the ultrasonic sounds until they figured out his body's resonant frequency.
It is a sound frequency at which an object vibrates the maximum. When a sound wave reaches the natural frequency, the target vibrates the maximum, hence terming the phenomenon resonance. And when a body reaches resonance, its molecular structure vibrates the maximum, causing the bonds to weaken and over time, rupture.
As a result, blood spurted out of the Boar King's body, causing him damage. But suddenly, the resonant frequency of his body changed as his density morphed, reaching new levels, thought impossible for even Empyrean Tusks. The reason…
