Yerin's Red Belt

Yerin's Red Belt is a mysterious, sentient artifact that serves as both a weapon and a companion, evolving from a dormant relic into a fully awakened entity with its own will and power. Across the series, the belt transforms from a simple containment vessel for the Sword Sage's remnant into a dynamic force that actively shapes Yerin's path, growing in power and personality as it absorbs new sword authorities and experiences. Its evolution mirrors Yerin's own growth, becoming increasingly integrated with her spirit and fighting style while developing its own distinct voice and motivations.