Craft Material

Story
Ever since the researchers of the C.A. Transmute Theory realized that they could control a core's inconsistent attributes by using yet another legacy of the Honorable Age called "Disc", they started researching if it would be possible to control cores by using things other than "Disc". After much research, they found out that there are several materials that can be used to control cores even though their controlling powers are not as efficient as Disc, but those materials can become more powerful when they are used with Disc.

Unfortunately, various results of their research into the subject caused the legal prohibition of practicing the C.A. Transmute Theory by the articles of "the prohibition of practicing or studying mass murder weapons" in the charter of the 3rd NCC (Nevareth Continental Council) constitution. However, even if the C.A. Transmute research was prohibited by law, it seems people never stopped trying new methods of the C.A. Transmute Theory on those mysterious materials that were identified for their effects in controlling core's inconsistent attributes.

Disc
According to the C.A. Transmute Theory, "Disc" can be used to change a core's attribute that already has been stabilized, and the type of the Disc will determine the new attribute of the core. However, Nevarethian's Core Technology has not been fully developed, and thus people can only change their cores' attribute to something similar to what they desire, not as perfect. After much research, scholars identified this "Disc" which possesses a peculiar power that acts as a catalyst of Force as a legacy of the Honorable Age, but they have not been able to figure out exactly when the Discs were developed.