Kyūbi no kitsune

Kyūbi no Kitsune 九尾の狐
Kyūbi no Kitsune (九尾の狐), the “Nine-Tailed Fox,” is the ultimate evolution of a fox spirit—a god-like entity possessing infinite wisdom, near-omniscience, and power that can shape the fate of empires.
Meaning and Origin
The name literally means “Nine-Tailed Fox” (kyū - nine, bi - tail, kitsune - fox).
The legend originated in ancient China (where it is known as the Huli Jing) and spread to Korea (Kumiho) and Japan. In Japanese folklore, a Kitsune gains a new tail every 100 years of life. Reaching nine tails signifies that the fox has lived for nearly a millennium, reaching the pinnacle of its spiritual and magical development.
Characteristics
As a Kitsune gains its ninth tail, its fur turns from red or orange to a brilliant white or a shimmering gold. At this stage, the fox is said to possess the “Ear of the World,” able to hear and see anything happening anywhere across the globe.
A Nine-Tailed Fox is a master of illusions on a grand scale. While a common fox might trick a single traveler, a Kyūbi can manipulate the minds of kings and generals, create entire phantom cities, and call down lightning and fire from the heavens. They are often seen as divine beings, closely associated with the god Inari, but they can also be ancient, malevolent entities that thrive on chaos.
Legends
The most terrifying legend of the Kyūbi is that of Tamamo-no-Mae. She was a beautiful courtesan of the Heian period who was discovered to be a Nine-Tailed Fox intent on killing the Emperor and seizing the throne.
Unlike younger foxes who prank for fun, the Nine-Tailed Fox often plays a “long game” that spans decades. Once revealed and killed, it was said that Tamamo-no-Mae’s spirit possessed a stone (the Sessho-seki) that killed anyone who touched it. This legend reinforces the idea that the Kyūbi is not just a monster, but a force of nature that represents the dangerous intersection of high intelligence and supernatural ambition.