Folklore, retold
The story as it is told
A retelling, not a citation. What follows is the story as the most widely circulated popular accounts tell it — folklore encyclopedias, translations, and the versions that have travelled furthest. It is synthesized rather than keyed line by line to the dated primary texts, and popular versions drift from what those texts actually say. The cited, source-by-source record begins further down this page, and where the two disagree, the record wins.
You know the feeling. The cold ripple that goes up the back of your neck when something is wrong. The prickle at the nape, the hair going up along your arms, the half-second before you consciously understand that you're afraid.
Somebody in 1779 looked at that sensation and said: that's a creature, and it's touching you.
The buruburu — the word simply means "trembling" — is invisible, and it clings to your collar. The chill at the back of your neck is not a symptom of fear. It is the yokai taking hold. Fear is not something happening inside you. It's something that has got onto you from behind.
Its other names finish the idea
It's also called the okubyō-gami, the god of cowardice — and the old description of what it does is one of the best lines in the whole tradition: it is the god who makes the heart show its back to the enemy.
Not who makes you frightened. Who makes your heart turn around and run.
And it's called the zozo-gami, the one who stands all the hair on the body on end. There is a monster whose entire portfolio is goosebumps.
Why this is the perfect last entry
Work through a collection like this one and you meet a few hundred things that cause fear. Rivers with something in them. Roads with something on them. Ceilings, lanterns, cats, weather, the dark at the top of the stairs.
And then Toriyama Sekien, having catalogued all of it, turns around and catalogues the fear itself. Not another cause. The effect, drawn as a wispy figure at a hunter's back, riding his collar, deciding when he shivers and when he bolts.
That's an extraordinary move, and it says something about what these catalogs actually were. Sekien wasn't only collecting monsters. He was collecting the experiences that don't have names — and Japanese folklore does this repeatedly. There's a creature that is the moment of dusk when the light goes strange and you can't tell who's coming toward you. There's one that is sleep paralysis. There's one that is the sensation of being followed.
The buruburu is the purest of them. Every other yokai is an answer to the question "what made that noise?" The buruburu is an answer to the question "what just happened to me?"
Which leaves you with a small, unsettling thought to carry around. If the shiver is a thing that grabs your collar, then the moment you feel it, something has already arrived — and it got to you before you knew there was anything to be afraid of.
Field guide
At a glance
- Behavior
- Clings to your collar — the cold ripple up the back of the neck is the yokai taking hold.
- Powers
- Decides when you shiver, when you bolt, when your hair stands; alias: the cowardice god, "who makes the heart show its back to the enemy."
- Weaknesses
- None recorded; it is the weakness.
- Oddities
- After a catalog of things that cause fear, Sekien catalogued fear itself — the last monster is the feeling of monsters.
- The hundred-tales game's true herald: the buruburu is what the aoandon sends ahead.
Overview
That cold ripple up the back of your neck when fear arrives — Sekien named it. The buruburu (the word is Japanese for "trembling") is an invisible thing that clings to your collar: the chill at the nape is the yokai taking hold [ja-buruburu], per Sekien's Konjaku Gazu Zoku Hyakki caption, 1779. Its aliases complete the doctrine: the okubyō-gami — "the god of cowardice, who makes the heart show its back to the enemy" — and the zozo-gami, "who stands all the body's hair on end" [ja-buruburu], per Inada/Tanaka 1992; Murakami 2000.
The reading
The tradition's most elegant closure: after two hundred entries of things that cause fear, here is fear itself, catalogued as a yokai — riding your collar, deciding when you shiver, when you bolt, when your hair stands. Sekien's catalogs end where they must: the last monster is the feeling of monsters. The site's hundred-tales mode has its perfect penultimate entry — the buruburu is what the aoandon sends ahead.
Two-track labeling
The image
Citations
The record
- [ja-buruburu]「震々」ja.wikipedia raw (retrieved 2026-07-25), citing Murakami (2000) and Inada/Tanaka (1992). Tier C carrying Tier B.modern reference Japanese Wikipedia's article on this subject, as retrieved in 2026 — often carries regional detail the English article lacks.All-source record
- [sekien-1779]per 02-HISTORICAL-CATALOGS.md.Edo, 1779 Sekien's second catalog (Konjaku Gazu Zoku Hyakki) — more inventions and puns join the attested spirits.All-source record
Where the evidence thins
Open questions
- The okubyō-gami in Edo idiom (the "cowardice god possessed him" usage).
- Placement in the hundred-tales mode (editorial).