Testing the power of a Soultrait was possible thanks to the technique mankind developed over the course of hundreds of years.
It was rarely tested because the results had never been accurate in the past. That only changed with the technological advancement of the past decade.
A testing device to perceive the Soul Power exuded by Soultraits had been created.
However, the testing device was not perfect. It couldn't determine the Soultrait's star rating, or how many Links of Loyalty enhanced the Lord's Soul Power.
Several machines were attached to Michael in order to test the Soul Power he could unleash upon releasing the strongest form of his Soultrait.
But Michael didn't move an inch. He was as stiff as a board.
Michael didn't want his four Soultraits to be discovered. In fact, he would rather reveal only one Soultrait while keeping the others a secret. That was why the appearance of the Soul Power testing device scared him.
