Yeowu Gwang

Yeowu Gwang, the fox bead, is a glowing magical orb in Korean folklore carried by fox spirits such as the gumiho, serving as the source of their supernatural power, knowledge, and seductive abilities. Legends describe it as an energy source that grants illusions, enhanced intelligence, and longevity, often swallowed or held in the mouth. The bead can be stolen or lost, weakening the fox spirit, and in some tales, consuming it transfers immense power to humans—though at great risk. It symbolizes the duality of fox spirits: both dangerous and wise, with the bead embodying their essence and the temptation of forbidden knowledge.