At first, the change was subtle, but Noah's group experienced it as a groundbreaking event. They felt their grip on the world weakening as Heaven and Earth's power rose.
Everyone else soon sensed the change, or, rather, the event became impossible to miss. The sky's whiteness intensified as the whole structure began to shrink and condense. Something massive was happening to the world, but that was only a superficial transformation.
The greatest change involved the pressure naturally radiated by the sky. The white light brightened and gained the properties of sharp blades that tried to pierce every sea of consciousness in their range.
Even the magical beasts that had just begun to rejoice at the fall of the weak sky had to run away to hide from the incoming light. Their powerful bodies weren't enough to shield them from the dangerous radiance.