A yurei is the ghost of a specific human being who died and did not move on. A yokai is the much wider category of supernatural beings and strange phenomena in Japanese folklore, most of which were never human at all. Put simply: every yurei was once a person, and most yokai never were. The quickest visual test is the feet. A yurei traditionally has none, trailing off into mist below the waist, wearing a white burial kimono with long black hair over the face. A yokai usually has a body, often an animal or object one, and often a sense of humor.
In this article
- What is a yurei?
- What is a yokai?
- How do you tell them apart on sight?
- Is a yurei a type of yokai?
- Which one is on your shirt?
- FAQ
What is a yurei?
A yurei is a human soul held in the world by something unfinished. The usual causes are rage, grief, betrayal or a death that was never properly mourned, and the ghost stays until that thing is resolved. This is a narrower and sadder idea than the English word "ghost" usually carries. A yurei is not wandering at random, it is waiting for something specific.
The look is standardized enough to function as a costume. White burial kimono, long unbound black hair falling forward, hands hanging limp from the wrists, and no feet, the body fading into air below the knees. That last detail became fixed in Japanese art around the eighteenth century and it is still the single fastest way to read a figure as a yurei rather than anything else.
The quiet kind of haunted, which is the kind the yurei actually is.
What is a yokai?
Yokai is a catch-all. It covers monsters, animal spirits, shapeshifters, household objects that come alive after a century of use, and unexplained events like a sudden sound in an empty house. The word is closer to "the weird" than to "monster." If something strange happened and nobody could account for it, Japanese folklore had a yokai for it.
Crucially, most yokai were never human. A kitsune is a fox that gained power with age. A tanuki is a raccoon dog with a talent for illusion. An oni is a demon from the outset, not a person who turned into one. Yokai are also frequently funny, mischievous or simply inconvenient rather than terrifying, which is a tone English ghost stories rarely have.
How do you tell them apart on sight?
Five tells cover almost every case.
| Tell | Yurei | Yokai |
|---|---|---|
| Was it ever human? | Always | Usually never |
| Feet | None, fades below the waist | Has a solid body |
| Clothing | White burial kimono | Anything, or nothing |
| Motivation | One unresolved grievance | Mischief, appetite, or nothing in particular |
| Tone | Tragic, sorrowful | Often comic or absurd |
The motivation row is the one that matters most. A yurei wants something. A yokai mostly just is.
An oni was never a person. That is exactly what makes it a yokai and not a ghost.
Is a yurei a type of yokai?
Sometimes, depending on who you ask. Some scholars file yurei as a subcategory of yokai, on the grounds that both are supernatural and both belong to the same body of folklore. Others keep them strictly separate, because the origin is different: one is a dead human, the other is not.
In everyday Japanese usage the two words are not interchangeable. Calling a yurei a yokai sounds slightly off, the way calling a widow a stranger would. The honest answer is that the boundary is fuzzy in folk practice and firm in ordinary speech, and you will see both positions defended by people who know the material well.
Which one is on your shirt?
Most Japanese-inspired streetwear is wearing yokai, not yurei, and usually without saying so. Oni masks, foxes, tanuki, dragons and the various animal spirits are all yokai territory. Actual yurei imagery is rarer on apparel because the visual language is so specific and so tied to mourning that it reads as sombre rather than bold.
That is worth knowing before you buy. A yokai graphic says power, mischief or protection. A yurei graphic says grief. Both are legitimate, but they are not the same statement, and a lot of designs get sold as "Japanese ghost" when the thing on the shirt is unambiguously a demon. If you want the full breakdown of what the other common motifs mean, see our guide to the symbols in Japanese streetwear tees, and for the oni specifically, the difference between a red oni and a blue oni.
Haunting the room without making it anyone else's problem.
Frequently asked questions
What is the main difference between yurei and yokai?
Origin. A yurei is the spirit of a person who has died and is held in the world by an unresolved emotion. A yokai is a supernatural being or phenomenon that was generally never human, including animal spirits, shapeshifters and animated objects.
Why do Japanese ghosts have no feet?
It is an artistic convention that became standard in Japanese painting and woodblock prints from roughly the eighteenth century onward, used to mark a figure instantly as a spirit rather than a living person. It spread from art into theatre, then into film, and is now the default way a yurei is drawn.
Is an oni a yokai or a demon?
Both, and there is no conflict. Oni is the Japanese word usually translated as demon or ogre, and oni sit inside the broader yokai category. What an oni is not is a ghost, because it was never a living human.
Are kitsune and tanuki yokai?
Yes. Both are animals believed to gain supernatural ability with age, particularly shapeshifting, which places them firmly in the yokai category rather than the ghost category.
Is Obon a Japanese Halloween?
No. Obon is the Buddhist observance in mid-August when ancestors are welcomed home, and its mood is warm and familial rather than frightening. The dead are expected guests. Halloween arrived in Japan separately and much more recently as a costume event with no religious content.
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Related reading: kitsune vs tanuki and red oni vs blue oni. Background sources: Wikipedia on yokai and Yokai.com.