Kuchisake-onna

It's getting dark and you're walking home from school. A woman is coming the other way. Long coat, long hair, and a surgical mask over the lower half of her face — completely unremarkable in Japan, where people have worn them on the street for colds and hay fever for generations.

She stops in front of you. She says: "Am I pretty?"

If you say no, she kills you on the spot. If you say yes, she takes off the mask. Her mouth has been cut open from ear to ear, all the way back, a red slash across the whole lower face, and she leans in and asks the second question: "Even like this?"

Say no now and she kills you for the insult. Say yes and she makes you match — she cuts your mouth open to look like hers, so you'll be pretty too.

That's the slit-mouthed woman, and if you were a Japanese child in 1979 you did not think of her as a story. You thought of her as a thing that might be on your street.

The escape routes

What makes her a genuine piece of folklore rather than a shock image is that kids immediately did what people have always done with monsters: they worked out the rules and traded solutions in the playground. The countermeasures spread as fast as the legend did, and they are pure yokai logic.

Answer "average." Not yes, not no. Ambiguity jams her, she stalls trying to process it, and you run. This is the standard one and it is beautifully childish — the schoolyard discovered that the way to beat an impossible question is to refuse to answer it.

Throw hard candy at her. She stops to pick it up. Some versions say fruit, some say sweets specifically; the principle is that she is compelled to gather what's dropped.

Say "pomade" three times. In the panic-era version of her backstory she was disfigured by a plastic surgeon, and the surgeon wore pomade in his hair, so the word itself repels her. This one is wonderfully specific, and it's the sort of detail that only appears when a story is being genuinely told rather than merely repeated.

Tell her you have an appointment. She apologizes, bows, and lets you go — which is the most Japanese solution in the entire canon, and puts her in direct line of descent from the kappa, who can also be defeated by good manners.

There is a harder variant where she comes in threes, sisters in identical masks, and asks in turn.

The part that actually happened

Most urban legends can't be dated. This one can, almost to the week, because Japan lost its mind over it in public.

It seems to start in rural Gifu Prefecture around the middle of 1978, moving between schoolchildren. The first newspaper coverage lands on 26 January 1979. By spring it's everywhere in the country, and by June it's in the national weeklies. And then it stops being a story and starts being an event: police were deployed on patrol in Fukushima and in Kanagawa. Schools organized children into groups to walk home together. In some towns PTA members escorted kids personally. Parents were calling the authorities. The authorities were responding.

Then, in the summer, it simply evaporated — and the way it ended is the most revealing detail of all. The panic collapsed during the school holidays. The monster kept school hours, because the monster lived in the walk home, and when there was no walk home there was no monster.

She came back, too. Not in Japan — a full recurrence swept South Korea in 2004, with the same questions, the same mask, and locally adapted escapes.

People have tried hard to give her deeper roots, and you'll see claims of Edo-period ancestors circulating confidently online. Scholars have not been able to verify them, and the various proposed origins — trauma from an eighteenth-century uprising, a Meiji-era woman who crossed mountain passes disguised, a carrot held in the mouth — are guesses. The solid ground is 1978–79, and it doesn't need help. What happened there was a monster being born in real time, with newspapers, in a country where the folklore was supposedly finished.

Why she works

Look at what she's made of. A woman asking to be told she's beautiful. A mask that hides exactly the thing that matters and that nobody would look at twice. A question with no safe answer. A punishment that is a mirror — she doesn't want you dead so much as she wants you to be her.

And she operates in the most ordinary place imaginable: a residential street at dusk, on the way back from school, in the twenty minutes when Japanese children were reliably alone. Every effective monster is a warning about a real gap in a child's day. Hers was the walk home.