Three days later.
The cave was filled with stone pillars that were neatly lined up within the dim environment. Noises of creatures scurrying about could be heard from the ultrasonic sensors. A subterranean bat species dwelled within the cave.
Most creatures relied upon their sense of sight to see the world. The most conventional aspect of senses for the eyes would be light.
Even in the darkness of the cavern, since the principal law of the world coexisted with light, there was still a possibility that an object could be sensed by a highly-evolved super light-sensitive eye. The darkness of the cave did not mark the end in the evolution of light-sensing eyes.
Naturally, the super light-sensitive eyes would be blinded in a well-lit spot.
However, when the Darkness Pool has melded into darkness, absorbing all surrounding light, even the most light-sensitive eye would lose its function. This was significantly different from painted camouflage.
