The moment Cain was teleported into the Pillar of Mind, a message arrived at his [A.I. Chip Module].
"Cadet, prepare yourself. The Trial of Mind will begin in two minutes. The trial will submit you to increasing levels of mental pain, measuring your willpower.
The test will last until you ask for the trial to stop or fall unconscious. The more you last, the higher your ranking will be.
We advise you to end the trial once you feel you can no longer endure it, as passing out could lead to some minor brain trauma."
Cain nodded once he heard the robotic voice and adopted a meditative position before emptying his mind and calming his heart.
As he waited, he went through his understanding of willpower. It was a very abstract concept in the Old World, but now that the Godslayer Humankind's knowledge reached such an immense level that even embarked on the soul, many scholars have studied it.