Amanojaku

The amanojaku is contrariness with a body.

Tell it to do something and it does the opposite. Not out of malice exactly, and not out of a plan — it simply cannot go the way it's pointed. Worse, it reads you first. It looks into what a person actually wants, and then it acts directly against that, which is a more precise cruelty than random mischief. It's small, demon-ish, a minor sort of oni, and it exists to be the grain running the wrong way.

The word survives in ordinary Japanese. Call someone an amanojaku today and you mean a contrarian — the person who argues the other side because it's the other side. One of the very few yokai to end up as a common noun for a personality type.

It used to be a goddess

The unexpected part is where the ability came from.

The amanojaku descends from Amenosagume, a shamanic goddess in the old myths who could probe the movements of heaven and read the hearts of human beings. That was a divine talent — insight, the ability to know what someone truly wants.

Somewhere along the way it curdled. Heart-reading became heart-opposing. The gift of understanding people, running backwards, becomes the compulsion to thwart them. That is a genuinely elegant piece of mythological decay: the amanojaku is what happens when perfect empathy loses its goodwill.

The dark fairy tale

Its main appearance in Japanese folk story is not a children's tale, whatever the picture books have done with it.

An old couple find a melon in the river. Inside is a girl, Uriko-hime — the melon princess — and they raise her. She grows up beautiful and skilled at the loom, and a marriage is arranged.

Then the amanojaku comes. In the gentler versions it tricks its way in, abducts her, and ties her to a tree. In the older and more common versions it kills her. And in the version that made the story famous, it kills her, flays her skin, puts it on, and walks into the wedding wearing her.

It is discovered — usually by a bird that will not stop singing the truth from a branch — and it is killed. But the story keeps the image, and the image is the reason the tale survived when a thousand gentler ones didn't.

Children's editions soften this to a kidnapping. Both versions are real; the skin one is older.

You have already seen it

Here's the part that surprises people who visit Japan.

Buddhism took the amanojaku and gave it a job: it became the embodiment of base earthly desire, the appetite that has to be subdued before anything else can happen. And once you're the embodiment of something that has to be subdued, you end up in the artwork.

So the amanojaku is the small, grimacing demon being stood on. It is underneath the feet of the Four Heavenly Kings in temple after temple across Japan — crushed flat, face contorted, taking the full weight of an armored guardian, permanently. It's on Bishamonten's armor, snarling. It is in the entrance hall of more or less every major temple in the country.

Which gives the amanojaku the strangest career of any yokai here. Every other creature in this collection is remembered for what it did. This one is remembered, in bronze and wood, in thousands of temples, for losing — held down forever in the exact posture of an argument it isn't allowed to win.