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Onikuma

In its own language: 鬼熊

from the Japanese words for demon and bear

A giant bear spirit from Japan that throws stones and steals livestock

Legendary

The onikuma is a Japanese yōkai described as a massive bear capable of walking upright. It originates in the Kiso Valley of Nagano Prefecture and is said to steal cattle or hurl large rocks at people.

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  • An onikuma is a Japanese yōkai resembling a giant bear
  • It originates from the Kiso Valley in Nagano Prefecture
  • The creature is said to throw massive stones at people
  • It was documented in the 1841 book Ehon Hyaku Monogatari
  • Hunters used hollow tree trunks to trap the beast

What it is

The onikuma is a legendary creature from Japan classified as a yōkai. This being takes the form of an enormous bear that can stand on two legs. Local stories say it descends from high mountains into villages after dark. Its main goal is to capture horses and cows for food. Some accounts also describe it as a powerful force that moves heavy boulders with ease.

Where it comes from

This myth comes from the Kiso Valley in Nagano Prefecture. The tale was recorded in the Ehon Hyaku Monogatari, a book of strange stories published in 1841. According to local belief, ordinary bears transform into these monsters after living for many years. The name literally means demon bear in Japanese.

How it is done

Villagers developed specific ways to trap these creatures. They would hollow out a large tree trunk and place it over a vine nest. Poles were then driven through the wood to pin the beast down. Once trapped, hunters would attack the animal with spears and firearms. Historical records mention skins that covered vast areas when stretched out.

Tools and materials

The creature is associated with massive stones found in the Kiso Valley. Locals call these Onikuma stones because they are too heavy for humans to move. The monster is said to throw these rocks from mountain heights. Hunters used wooden tubes and sharp weapons to subdue the beast.

Onikuma, drawn and placed

Emblem With the feather shape. Drawn from this page, not a photograph.
  1. Living
  2. Revived
  3. Fading
  4. Historical
  5. Legendary
  6. Performed
Standing: Legendary Known from myth, story and legend rather than from recorded practice. This says whether people still do it, not whether it works.
A feather: used in cleansing and blessing in some traditions, worn as a sign of office, and carried as a charm.
Lineage
Japanese yōkai folklore
Timing
at night
Where it sits The tradition it belongs to, and when it is done.

What it is for

People feared the onikuma because it attacked humans and stole farm animals. It represents a dangerous force of nature in mountain folklore. Communities told these stories to explain unexplained injuries or missing livestock. The tales served as warnings about venturing into deep forests alone.

Who does it

No specific religious group practices this tradition today. It remains a part of regional folklore and historical literature. Modern audiences encounter the concept through books and media adaptations rather than active ritual.

Peoples and places

The legend is rooted in Japanese culture, specifically the Kiso Valley region. Similar fears exist in Hokkaido, where aggressive bears were sometimes labeled as onikuma. The stories reflect the historical relationship between villagers and wild mountain animals.

At a glance: who, where and when

Peoples

What people believe

Yōkai are supernatural entities in Japanese mythology. The onikuma embodies the power and unpredictability of wild beasts. Believers viewed it as a distinct spirit rather than just a regular animal. Its ability to walk upright marks it as something beyond natural biology.

When it is done

The creature is most active during nighttime hours. Stories often involve it sneaking into settlements under cover of darkness. No specific festivals or seasonal dates are tied directly to its worship or appeasement.

How scholars and sceptics see it

Researchers study the onikuma as part of Japanese folklore history. The Ehon Hyaku Monogatari provides a key textual source from the Edo period. Anthropologists analyze how these myths explain human fear of predators.

Cautions and what is closed

The legends describe physical danger from stone-throwing attacks. In modern times, the term appears in fiction and music bands. There are no known real-world rituals involving harm to animals or people.

Compare and confuse

It differs from other bear spirits by its upright walking and stone-throwing habits. The name shares roots with general demon terminology in East Asia. Other cultures have similar giant beast myths but lack the specific Japanese yōkai classification.

Law and persecution

There are no specific laws regarding the onikuma itself. It is a fictional entity protected by copyright in modern adaptations. Traditional folklore remains in the public domain.

Today

The onikuma appears in contemporary media like animation and film. A short movie titled Onikuma premiered in Italy in 2016. A metal band also uses the name. The legend persists as a pop culture reference point.

Questions people ask about Onikuma

What is an onikuma?

It is a Japanese yōkai described as a massive bear that walks upright. It is known for stealing livestock and throwing large stones at humans from mountain heights.

Where does the onikuma come from?

The legend originates in the Kiso Valley of Nagano Prefecture in Japan. It was formally recorded in the 1841 publication Ehon Hyaku Monogatari.

How do you kill an onikuma?

Traditional methods involved trapping the beast in a hollowed tree trunk. Hunters would then drive poles through the wood and attack the pinned creature with spears.

Why are there large stones in the Kiso Valley?

Locals attribute huge boulders called Onikuma stones to the creature. They believe the monster threw these rocks, which are too heavy for humans to move, from the mountains.

Good reading and sources

Where this page comes from

The facts on this page come from the Wikipedia article "Onikuma", written by its contributors and used under the CC BY-SA 4.0 licence, and from its Wikidata record (CC0). EveryJaadu rewrote the text in its own words, with AI assistance, and compares every page with the article to make sure no passage is copied. It may be reused under the same CC BY-SA 4.0 licence with a link back.

It may contain mistakes. Names and customs differ from one community to the next, and some knowledge is closed to outsiders and left out here. This page describes belief and practice. It does not say that any of it works, it is not a how-to, and it is not medical advice. If something is wrong, tell us. Last refreshed 2026-10-16.

Photo credits on this page

The small pictures above come from Wikimedia Commons under free licences. Some are cropped to fit.

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