Waira

A massive bovine-bodied creature, crouching, with a single sharp curved claw on each forefoot.

It's in the 1737 scroll and in Sekien's 1776 catalogue.

And in every early source, only the upper body is drawn.

The scholarly note: "full figures remain unknown."

Its hindquarters were never invented.

It's an emotion with fur

The etymology, per the folklorist Tada, is the whole entry.

Wai — dread, or reverence.

Wairai — to crouch in deference.

Waira is a posture of fear, painted as an animal.

And its scroll companion — the hairy mass with claws and tusks that sits on top of shrine gates — is named after the adjective *osoroshii*, "frightening."

So the two of them, hung side by side in the same books, are:

Fear from above. And fear crouching low.

Two adjectives, given fur, and nothing else has ever been established about either.

Everything said about it is a guess

The record is candid: "no verified folklore documentation exists."

What we have instead is a list of proposals:

A yokai of unknown nature.

A mountain-dweller that uses the claw to dig out moles.

A man-eater.

And Tsuji Nobuo's suggestion: a green monster transformed from a toad.

All speculation, none of it from folklore, all of it modern.

And then somebody made up the famous detail

Here's the reason this entry matters.

You will find, repeated widely and confidently, that waira come in two colours by sex: males earth-coloured, females red.

It's the kind of detail that reads as authentic. Specific, biological, a bit odd — exactly what real folk taxonomy sounds like.

It's cited as a sighting record from Hitachi, in Ibaraki.

It originated in Yamada Norio's 1976 children's book series.

Yamada claimed a forgotten source. Nobody has found one.

A sexed colour-scheme, invented whole in 1976, now repeated as Edo lore across the internet.

That's the third confirmed item in the standing audit of this one author's inventions — alongside a dishcloth monster's slime attack, an old-woman yokai's fabricated variants, and the "origin story" of the tall woman at the brothel window.

And it's the cleanest of them, because the invented detail is so small, so plausible, and so completely traceable.

The tree rings

If I could show you one diagram for this entry it would be this.

1737 — the image.

1776 — the image again.

1976 — the sexed colour variant.

Now — internet consensus, presenting all of it as one ancient tradition.

That diagram is the entry. Two hundred and forty years of nothing, one children's book, and then a monster with sexual dimorphism.

One instruction for anyone drawing it

Never draw the hindquarters.

Three centuries of artists have declined to, and the refusal is now the most authentic thing about the creature.

It is a front half, crouching, in fear or causing it, and whatever is behind it has never been anybody's business.