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.
Tosa — modern Kōchi, on Shikoku.
The laughing woman appears on the 1st, 9th, and 17th of each month.
And encounters left people half-dead.
The Higuchi story
Higuchi Sekitayū ignored the calendar warnings and took his servants up the mountain on one of her days.
A girl of seventeen or eighteen pointed at him and laughed.
And then the laugh spread.
> Stones, plants, water, and wind seemed to laugh together.
The party fled. The servants fainted at the mountain's base.
Sekitayū got away — and was haunted by the sound forever.
Her laugh isn't a noise. It's a consensus.
This is what makes her different from every other sound in the collection, and it's worth being precise about.
The mountain-man's shout is volume. It hits you like weather and you fall over.
The laughing woman's weapon is agreement.
She laughs, and the landscape joins in — stone by stream by wind — until the human party is the only thing on the mountain that isn't laughing.
That is a completely different terror. Not assault. Exclusion, performed by an ecosystem.
You are being laughed at by the place, and there is nowhere on it to stand that isn't participating.
The variants complete the spectrum
The male precursor. An earlier text, the Nanroshi, records a warai-otoko — a laughing man. The laughter predates its gendering.
Voiceless versions, where there is no sound at all and you simply see it happening.
Nocturnal versions.
And the one that turns it inside out: versions where the victim laughs — uncontrollably, until fever.
The weapon migrates from her mouth to yours.
Which gives the file its full range: laughter as assault, laughter as environment, laughter as infection.
There's a sword
The relic: a blade said to have defeated her, enshrined at the Tsurugi-sama shrine in the Kōgi castle ruins.
Which is the laughter file's one piece of physical evidence — an object, in a place, that you can go and look at.
And she was on the calendar
The dated appearances are the part I keep coming back to.
The 1st, the 9th, and the 17th.
Not "sometimes." Not "on dark nights." Specific days of every month, known in advance, which is why Sekitayū's story works as a cautionary tale: he was warned, and the warning was a date.
Tosa scheduled its dread.
And it wasn't alone. There are fire-processions that come on fixed nights, one-eyed visitors who check the household's ledger on the eighth days, a rider on a headless horse who is only out on the almanac's danger dates.
Japan's night-fears ran on a timetable, and a village that kept the calendar knew exactly which evenings to stay off the mountain.
Higuchi Sekitayū knew too. He went anyway, and the mountain laughed at him for the rest of his life.
Field guide
At a glance
- Behavior
- Appears on the 1st, 9th, and 17th; points at trespassers and laughs — until the stones, water, and wind laugh with her.
- Powers
- Consensus — the ecosystem joins the laughter and the victim becomes the only thing on the mountain not laughing; encounters leave people half-dead.
- Weaknesses
- A sword said to have defeated her is enshrined in castle ruins — the laughter-lore's one relic.
- Oddities
- The dread was calendared: Tosa scheduled its laughing woman to three days a month.
- In the cruelest variant the victim laughs uncontrollably until fever — the weapon migrates mouths.
Overview
Tosa's laughing woman, from the Edo–Meiji Tosa Bakemono Ehon: she appears on the 1st, 9th, and 17th of each month, and "encounters left people half-dead" [ja-warai-onna]. A young woman whose laugh escalates past nature — until the surroundings join it.
The Higuchi story
Higuchi Sekitayū ignored the calendar warnings and took his servants up the mountain. A girl of 17–18 pointed at him and laughed — and the laugh spread: "stones, plants, water, and wind seemed to laugh together" [ja-warai-onna]. The party fled; the servants fainted at the mountain's base; Sekitayū escaped "haunted by the sound forever" [ja-warai-onna].
The record
- The male precursor: the earlier Nanroshi records a warai-otoko [ja-warai-onna] — the laughter predates its gendering.
- Variants: nocturnal versions; voiceless versions; versions where the victim laughs uncontrollably until fever [ja-warai-onna] — the weapon migrating from her mouth to yours.
- Attribution: some sources unmask a tanuki [ja-warai-onna] — Shikoku's default, as the possession map predicts.
- The relic: a sword said to have defeated her, enshrined at the Tsurugi-sama shrine in the Kōgi castle ruins [ja-warai-onna] — the laughter file's one piece of physical evidence; places-page pin.
The reading
The laughter file's field-recorded centerpiece, and the mechanism deserves its due: her laugh is not a sound but a consensus — the horror arrives when the world agrees with her, stone by stream by wind, and the human party becomes the only thing on the mountain not laughing. That's a different terror than the yamajii's decibels: exclusion, performed by an ecosystem. The dated appearances (1st, 9th, 17th) put her on the calendar page beside the janjanbi and kotoyōka visitors — Tosa scheduled its dread. And the victim-laughs variant completes the file's spectrum: laughter as assault, laughter as environment, laughter as infection.
Two-track labeling
The image
Citations
The record
- [ja-warai-onna]「笑い女」ja.wikipedia via WebFetch (retrieved 2026-07-26), Tier C.modern reference Japanese Wikipedia's article on this subject, as retrieved in 2026 — often carries regional detail the English article lacks.All-source record
Where the evidence thins
Open questions
- Tsurugi-sama shrine/Kōgi ruins location.
- The sound-page's laughter section: assemble (warai-onna/kerakera/hyōsube/tengu-warai/hihi).