Hakuzōsu

An old fox finds out that a hunter has been setting traps for foxes.

The hunter's uncle is a priest named Hakuzōsu. So the fox becomes him.

Not approximately — completely. The robes, the shaved head, the walk, the voice, the manner of a man who has spent forty years in a temple. And in that form the fox pays a family visit to its own would-be killer, sits down with him, and preaches a sermon against fox-hunting.

Taking life is wrong. Think of the karma. Think of what you're doing to your own next existence. Put the traps away.

And the nephew, being a dutiful man receiving moral instruction from his elderly uncle, agrees.

It's a perfect crime

Which it is, right up to the walk home.

The fox leaves, still in the priest's shape, and goes back across the fields. And out there — depending on the version — it either passes the baited trap, or it hears the cry of another fox.

And its nature answers.

The disguise doesn't fail because anyone catches it out. It fails because the fox is still a fox, and something in it responds before it can decide not to. The cry is the thing it can't govern.

That is the entire kitsune corpus compressed into one moment. Japanese fox lore is full of perfect impersonations — wives who pass for years, priests, travellers, whole processions — and they all come apart the same way. Not by investigation. By instinct. The dog that barks. The tail that slips. The sound that comes out before thought does.

The tale-type is indexed internationally as "The Fox Jeers at the Fox-Trap," which slightly undersells it.

The role actors wait their whole lives for

Now the part that lifts this above a good anecdote.

There is a kyōgen play about it — Tsurigitsune, "Fox Trapping," also known as Konkai, which is the sound of a fox's cry. Kyōgen is the comic theatre performed alongside Noh, and this is its summit.

The fox role is a secret transmission piece. In the traditional schools that's a formal category: a work whose performance is handed down privately, restricted, and given to an actor once. It's understood as a graduation — the piece that marks a kyōgen actor as having arrived, performed once in a career and then not again.

The costuming is extraordinary. The actor plays an old priest who is really a fox, and the transformation is worn on the body: the fox-fur and the half-mask emerging out of the priest's robes, an animal being visible through a man.

So the material and the tradition match perfectly. A piece about an impersonation so total that only the instinct betrays it, performed by an actor who has spent decades learning to disappear into a role, once, as the proof that he can.

The darker version

Two more layers worth knowing.

There are temple legends of a real priest called Hakuzōsu — a poor man whose fortunes turned after Inari granted him a white fox — with the fox later borrowing his face. So the con may run on a real name and a real gift.

And the illustrated collection of 1841 tells it much darker. Relocated to Kai, the fox doesn't preach one sermon and slip up on the way home.

It takes the priest's identity and keeps it for fifty years.

Not a trick. A career. Half a century of somebody else's life, lived in a temple, by a fox — and nobody the wiser until the end.