Komayō

The claim, as it circulates

A beautiful woman in a midnight-blue kimono.

She appears on full-moon nights, in chess bars and internet cafés in the Kansai region, and challenges people to a variant game of shogi.

Lose, and your soul becomes a ghost.

Her origins are said to trace to the Kamakura era — "though historical sources are lacking."

The audit

That last clause is the tell, and once you start pulling, the whole thing comes apart.

The primary source is a single-purpose website. One domain, dedicated to this creature. No folklore collection. No scholarship. No Edo attestation, no Meiji attestation, nothing before the web.

The sourcing is circular. A list entry cites the website; the website is the only thing the list entry rests on. That's the classic load-bearing arch of a hoax — two sources pointing at each other, and nothing underneath.

The content reads as pastiche, not transmission. "Net cafés." "For several years." "Witnesses typically describe." That's the grammar of urban legend writing, not the grammar of a collected one — and the Kamakura claim comes pre-hedged by whoever wrote it, which is not how genuinely old attributions behave.

And the name is too good. 駒妖 — "piece-phantom," the shogi piece as apparition — is an elegant modern coinage. Real folk names are usually clumsier, regional, and full of dialect.

There's no Japanese-language article. Nothing in the standard scholarship.

Verdict: probable hoax, inserted into the very list this collection's roster was built from.

Why it's on the site anyway

Because it's the most useful entry here.

This whole enterprise began by catching fabrications, and built a method around never repeating a claim without knowing where it came from. And the roster — nearly five hundred names, worked through to the end — turns out to contain one probable invention inside the source itself.

The last unresolved name on the list is the list's own contamination, wearing a custom domain.

As a specimen it completes a timeline that runs through everything else on this site: Sekien inventing citations in 1779, captions fabricated in 1929, a magazine yokai in 1966, invented regional legends in the 1970s, forum-born monsters between 2001 and 2008 — and now the Wikipedia-hoax era.

Every century's tools, and the same move every time.

Somebody makes something up, gives it a pedigree, and waits for repetition to do the rest. The only thing that has ever changed is the medium.

So Komayō stays — as claim, audit, and verdict, in that order. Not as a monster. As the demonstration of what the whole apparatus is for.

And if a genuine pre-web source ever surfaces, this page becomes an apology with citations. The method has to cut both ways, on the record, or it isn't a method.