Kenmun are hairy water and tree spirits from the Amami islands in southern Japan. They look like a cross between a kappa and a monkey. They also closely resemble their Okinawan cousins, kijimunā. Their bodies are covered in dark red or black hair, and they have long, thin legs and arms. They are slightly larger in size than a human child. They have pointed mouths, and on top of their heads is a saucer-like depression which holds a small amount of oil or water. Their bodies smell like yams, and their drool smells terrible.

Kenmun make their homes in banyan trees and spend their days playing in the mountains or near the water in their family groups. They particularly enjoy sumo wrestling, at which they are very skilled. As the seasons change, they migrate back and forth from the mountains to the sea.

Kenmun have a number of strange abilities. They are able to change their shapes. They often disguise themselves as people, horses, or cows. They can change into plants and blend in with the surrounding vegetation, or even disappear entirely. Kenmun can also create light. Their drool glows eerily, as do their fingertips. They have the ability to create fire from the tips of their fingers. Sometimes they use this fire to light the oil in their head-dishes. When mysterious lights are seen in the mountains or on the shores of the Amami islands, it is called kenmun machi by locals.

Kenmun like to hunt at night, lighting up their fingertips to search for food in the dark. They primarily feed on fish and small shellfish. They also enjoy slugs and snails, pulling off the shells and rolling them up like rice balls (It is possible to identify a banyan tree inhabited by a kenmun by the sheer amount of snail shells piled up among its roots). They absolutely hate octopus and giant clams, and will have nothing to do with them.

Kenmun stay away from inhabited areas and run away when large groups of people are nearby. They will occasionally aid lone woodcutters and people gathering firewood by carrying heavy loads for them. They remember those who treat them kindly or do them favors. A fisherman who saves a kenmun from being attacked by an octopus is sure to earn its eternal gratitude. Some elderly islanders who have befriended kenmun are to call friendly kenmun out from the mountains to show to their grandchildren.

In general, kenmun do not harm people. They do, however, love competition, and cannot resit the chance to challenge a human to a sumo match. When their head-dish is filled, they have supernatural strength and cannot be beaten. However, kenmun like to mimic people, so if a challenger stands on their head or bows very low, their head-dish will empty out and they can be beaten.

While kenmun are not evil, they do enjoy playing pranks on humans from time to time. They may shape shift into animals and try to scare humans, or offer directions to people that get them totally and helplessly lost. They also have no shame about stealing food or even utensils from humans. Kenmun are very sensitive about being insulted, particularly about their body odors. Because of this, if a person talks about bad smells or farting while in the mountains, any kenmun who overhear it will become upset.

Kenmun do occasionally do wicked things to humans. There are stories of children who wandered into the woods and had their souls stolen by kenmun. Afterwards, the children behaved like kenmun, living in banyan trees and leaping from tree to tree when the villagers tried to catch them. Adults can have their souls stolen by kenmun as well. Kenmun like to force feed them snails, or pull them into rivers. These people are often later found unconscious beneath a banyan tree. If a banyan tree in which a kenmun lives is cut, the kenmun will place a curse upon the woodcutter. The kenmun’s curse causes its victims eyes to swell up, and then go blind. Eventually the cursed person will die.

Some families hang pig foot bones or Japanese pittosporum branches from the eaves of their roofs in order to keep kenmun from coming close. To drive away a kenmun, all it takes is to threaten it with an octopus. Merely threatening to throw an octopus at them is enough to send them running. If an octopus is not available to throw at them, they will also run away from a giant clam, or anything else you throw at them as long as you pretend it’s an octopus.