Upon reflection, Kedal metal's piercing strength was so potent, yet it did not appear frequently in the wars of the Otherworld. Luo'er believed that, ultimately, it was the metal's brittleness that caused this.
It was said that what made you strong could also bring you down. The piercing strength of Kedal metal stemmed from its brittleness, but it was this very brittleness that limited its applications. This characteristic was like a double-edged sword, capable of injuring others but also likely to cause self-harm easily.
Moreover, as wars gradually became aristocratized with a large amount of Rune Armor being used in defense, Kedal metal, which could only penetrate physical defenses, lost its appeal. The northern conquest of the Snow Domain by the Aud Empire was probably the last swan song for this metal.
