Mortality shot at the Black Demon and hit his chest.
BANG!
The spear met some crazy resistance when it hit the Black Demon's chest, and the form of the spear was already bent beyond recognition. It was basically shrinking in on itself as the power of the lightning runes that launched it compressed it to an insane degree.
CRK!
As the tiny Lightning Crescent in the spear's tip exploded, the scales of the opponent's chest were blasted apart.
While all of this was happening, the Black Demon still shot his spears forward at Gravis, but the force of Mortality was pushing his body back, which made it impossible for the Black Demon to hit Gravis.
As the main-head of the spear exploded with the Lightning Crescent, the hidden spike below the spearhead stabbed into the Black Demon's exposed chest.
BRRRRRRRR!
The actual Lightning Crescent exploded in the Black Demon's chest, but the sound was very different from usual.