Noah had created the spherical rune because he was experimenting on controlling the primary energy back then. Yet, the natives' inscription method had solved that issue before he could find another solution.
His spherical runes had become tools meant to enlarge his mental sphere at that point, and the primary energy inside them was necessary to avoid the discordant aptitude during the experiments with the living weapons.
The arrival of the higher energy had changed how Noah valued his assets. He didn't need to use the primary energy to create anymore, and even the runes that made use of it had become obsolete.
However, that was exactly how everything was supposed to work. The current state of his energies was in line with his individuality.
The primary energy was connected to his destruction. Creating wasn't its purpose, and it didn't suit its nature. After all, it was lighter than his other energies, which made it more fitting as a fuel rather than as a material.
