Purity was everything in what Noah was attempting to do.
In the stars, nuclear fusion could eventually start using heavier elements if the temperature and gravity allowed it. Yet, Noah needed to limit the materials to his darkness.
He was trying to create a procedure that would naturally bring his "Breath" to a higher state. There couldn't be any impurity in that.
The Black Hole spell floated in the darkness as his gravitational pull started affecting the energy in the underground room. "Breath" began to flow toward the small dark sphere, but it didn't enter in it. It only remained on its surface where it accumulated.
Noah had to modify his spell to make it fit the requirements of his procedure. The modification didn't take long because he only had to remove some of the abilities of the dark sphere, but he still had to spend months on it since it was a rank 5 spell.
However, he had obtained what he needed in the end.
