——Specifically, it's "Spider Silk".
"[Spider Silk] is a special life form created by the Grey Celestial Marshal. Its essence is a kind of collective Phantom Demon... It's not an individual, but a 'collective.' It has no shell, nor a physical body, its carrier is 'lies.' It has not made a contract with me but has completed 'symbiosis' with me... This is also a special way of existence for the Path of Adaptation."
"...Lies?"
Aiwass had no misunderstanding about the concept of symbiosis.
He just murmured softly, thoughtfully, "Worthy of being a creation of the Grey Celestial Marshal..."
The Grey Celestial Marshal is also one of the nine Celestial Marshals from the first descent, whose domain is "lies"—things that are neither black nor white, words that are neither evil nor good.
And Lily, without any reservations, revealed to Aiwass the most important secret in the Spider's Silk Sensing.
"Snake's hair, cat's footsteps, moth's cage, centipede's noose..."