Crack...
One of the wonderful effects of the Bright Light Barrier was to keep away any loud sound that could harm the user: after all, there were some sound skills able to confuse the mind or stun like the skill High Frequency Sound that priests obtained to stun the enemy and buy time to get away from danger. However, the Bright Light Barrier seemed to be a clever barrier as the really important sounds were still transmitted clearly from the outside to the inside.
In the middle of the purple world formed by countless lightning bolts that had joined together to create a purple pillar of destructive power several kilometers in diameter, the sound of something cracking could soon be heard by everyone. This sound was extremely small, but in the midst of the terrifying and suffocating silence, that small sound became extremely clear for all to hear.