In the Magic Kingdom, the written exam for the White Card certification consists of four subjects, namely "Rune Literature," "Mathematics," "Residual Beast Analysis," and "Kingdom Law and Task Behavior Standards."
Among these, "Rune Literature" naturally examines the knowledge reserve of a Magical Girl in the mystical aspects of the Magic Side. Because whether it's interpreting the kingdom's literature, researching magic techniques, or creating magic tools, it all requires corresponding rune knowledge. For a Magical Girl, this quality is essential.
