If the earthquakes induced by the Colossal Worm were bad, then the earthquakes inside the worm were even worse.
Michael even almost lost his balance, which was quite a rare instance.
"What's happening?" Reena panicked.
"The worm's moving."
And just like he said, they felt a tremendous amount of force pushing them forwards, as if they were in a car that went from 0 kph to 100 kph in a few seconds. The acceleration caused him and everything else to be propelled backwards and up the worm's digestive tract.
"Hold on!" he said, grabbing Reena from mid-air and keeping her close.
His [Absolute Unity Defense] would protect them from any debris that, like them, were getting accelerated to a velocity equal to that of a high-speed train.
Eventually, he saw a large opening in the distance, which was letting out a huge amount of light from the sun.