
Kappa: The River Child
The Horror in the Pond
The Kappa (River Child) is the most infamous aquatic Yokai in Japan. It is a reptilian humanoid, roughly the size of a child, possessing a turtle-like carapace, a beak, and webbed hands. It reeks of fish and stagnant water. It inhabits rivers and ponds, waiting to drag livestock and humans (particularly children) into the depths. Often depicted as "cute" in modern media, the traditional Kappa is a murderer, a rapist, and a thief of souls.
The Sara (The Dish)
The Kappa's biology has a fatal flaw. The top of its head has a depression called the Sara (Dish) which must contain water. This fluid is the source of its strength. If the water spills or dries up, the Kappa becomes paralyzed or dies.
- The Bowing Trick: The Kappa is bound by strict etiquette. If you bow to it, it is compelled to bow back. When it tips its head, the water spills, and it loses its power.
The Shirikodama
The Kappa hunts for a specific organ: the Shirikodama. This is a mythical "ball" said to reside inside the human anus, believed to contain the soul (tamashii). The Kappa drags victims underwater and extracts this ball violently. The victim is left dead or in a permanent vegetative state. This bizarre predation makes the Kappa uniquely feared.
Cucumbers and Sumo
The Kappa is obsessed with two things:
- Cucumbers: It loves them more than human flesh. Writing names on cucumbers and throwing them into the river is a traditional offering to buy protection.
- Sumo: It loves to wrestle. It will challenge passersby to a match. It is incredibly strong, unless you trick it into spilling its water.
The Final Warning
If you are near a river in the Japanese countryside and see bubbles, do not go in. The water may be shallow, but the grip is deep, so carry a cucumber.