Nure-onna

At the water's edge, a woman.

Her hair is always dripping — that's the constant, in every account. Wet hair, wherever you meet her, whether she's been in the water or not.

And below the waist she is a snake.

The tail lengths in the folk record are absurd and I'm going to quote them rather than tidy them: some accounts give three chō — around 327 metres.

Three hundred metres of snake. That's the kind of number folklore produces when it isn't measuring anything, and smoothing it out would be dishonest.

She hands you her baby

That's the attack.

She's holding a bundle, at the shoreline, and she asks you to take it.

And the moment it's in your arms, it becomes impossibly heavy — stone-heavy, rooting you where you stand. You can't run with it. And you can't put it down.

Then she circles back, and the accounts describe a long, snake-like tongue, and the blood.

The heavy baby has another owner

That trap is not originally hers, and the comparison is the interesting part.

There's a ghost in this tradition — the ubume, the woman who died in childbirth — who does the same thing. She appears at a crossing or a bridge with a bundle and asks you to hold her child.

And it grows heavy in your arms.

But in her story, that's the whole of it. You hold on. You endure the weight, which becomes enormous, and if you don't drop the baby, she thanks you. In many versions she gives you a gift — strength, or a blessing on your house — and her child turns out to be stone, or leaves, or nothing at all.

The heavy baby is a test of compassion. Will you hold a stranger's child, at night, when it becomes difficult?

The nure-onna takes that exact mechanism and uses it as a snare.

Same weight. Same bundle. Same request.

One is grief asking for one act of kindness. The other is predation wearing grief's clothes, and it works precisely because the first story exists — she's exploiting a script people already knew how to follow.

And in one place she has a partner

This is the part with no parallel anywhere else in the tradition.

In the Iwami region of Shimane, the nure-onna doesn't hunt.

She's bait.

She hands over the baby. The victim is pinned under the weight, unable to move.

And the ushi-oni — the ox-demon — comes out of the surf.

A two-species predation team. One immobilizes, one kills.

Nothing else in Japanese folklore works like this. Monsters here are solitary almost by definition; even the ones with subordinates operate alone. The Iwami coast produced the only cooperative hunt in the record, and it's between two creatures that otherwise have nothing to do with each other.

If you're on that coast and a wet woman offers you a bundle, the thing you should be watching is the water behind her.

Where she came from is an open question

Both of the great catalogues painted her — the 1737 scroll and Sekien in 1776 — and scholars have noticed something awkward.

There is no corroborating classical literature behind the snake-bodied image.

Which raises the possibility that she's another picture-first creature: the image came before the folklore, and the stories grew afterwards to explain what had been drawn.

That's happened repeatedly in this tradition, and it's worth saying plainly rather than pretending every monster came up out of a village.

The sober explanation offered for the original sightings, incidentally, is sea snakes — which do exist in Japanese waters, do swim with an undulating motion at the surface, and can look, at dusk, from a distance, like something with hair.

Though that doesn't account for the baby. Nothing accounts for the baby except the fact that somebody already knew the other story, and knew exactly how generous a person walking home at night is likely to be.