Japan's ghost-lore is not a heap of hauntings. It is a legal system, with a vocabulary, a case law, and a settlement mechanism — and it can be read here level by level.
What the system is a failure of
Before the angry dead, the ordinary ones. The sorei doctrine is the load-bearing wall under this entire page: the dead undergo memorial rites for thirty-three years, and at the end of that track they lose individual identity and merge with the ancestral collective, returning twice a year at Obon and New Year to be fed.
Sit with what the successful outcome actually is. The reward for a well-conducted death and a family that kept its obligations is that you stop being anybody in particular.
Which means the ghosts on this page are not failures of nerve or of justice. They are the ones who could not stop being someone. Oiwa is still Oiwa; Okiku is still counting; the sparrow in the palace is still telling everyone about his exile.
The night parade is a directory of the insufficiently anonymous — and the settlements below are all attempts to get somebody back into the queue.
The vocabulary (four words, kept straight)
Tatari — the curse-capacity itself; gods can carry it, places can, the never-human can. And a large part of that category is administrative residue: in the early Kamakura period, scholars matching kami to Buddhist counterparts found some deities had no equivalent — and "those lacking Buddhist equivalents were categorized as curse-bearing spirits." Gods demoted to hazards because a filing exercise had no row for them. Yūrei — the lingering dead: those outside the Obon system's care, held by unfinished business. Onryō — the subset with jurisdiction over the physical world: they injure, kill, burn palaces. Goryō — the settlement: wrath formally honored into guardianship.
The case law
The state triad — the three great onryō, all real people: Masakado (the rebel whose head-mound governs Tokyo real estate), Michizane (the framed scholar whose lightning struck the palace — now the god every student petitions), and Sutoku (the emperor whose rejected devotion became a vow of ruin — pacified over eight centuries, into 1964). The pattern, every time: wrath in proportion to wrong; deification in proportion to wrath.
Sutoku is also the system's strangest case: he stopped cutting his nails and hair in exile, letting himself grow into the tengu form his vow promised. The only figure in the tradition who began his transformation before dying.
And the proportionality clause is testable at the bottom of the scale. Sanekata knocked a rival's court cap off, was posted to the far north, and died homesick — so he came back as a sparrow eating rice in the emperor's hall, settled by one priest's dream, one mound, and a small temple. Michizane's ruin took a shrine network and a posthumous chancellorship; Sanekata's took a bird. Same four-stage lifecycle, scaled to the offence — which is what makes it a system rather than a mood.
The theater triad — the same law, moved down the power gradient to wronged women: Oiwa (poisoned; productions still visit her grave for permission), Kasane (murdered; her curse compounds through generations until the exorcist-saint), Okiku (accused; counting plates in the well until someone shouts "ten!"). The gendered turn is the system's history: the state's onryō were men of rank; Edo's were servants and wives.
The animal-form docket: grievance too institutional for a human ghost takes beast shape — Tesso (the cheated priest as a horde of scripture-eating rats), Teratsutsuki (the crushed anti-Buddhist faction as a temple-pecking woodpecker), Kyōrinrin (the losing side's sutras themselves, armored). Wrath as woodpecker, rat, and paper.
And note what they attack. Not people — continuity. The rats eat the rival temple's scriptures; the woodpecker works the timbers of the temples built to celebrate the victory. Neither wants revenge on a person; both damage the mechanism by which the winning institution persists, which is precisely what was taken from them. Losers of religious politics don't get shrines. They get beaks.
The docket's most precise case is Otora-gitsune, a shrine fox wounded by stray gunfire at Nagashino and left unemployed when the shrine was abandoned. Its possession is diagnosed not by the victim's symptoms but by its own war wounds — the left eye and left foot, reproduced on borrowed bodies for three centuries. A grievance that photocopies itself.
The settlement mechanism
The system's genius, stated once: the most dangerous ghosts are not fought — they are given shrines. The namahage gets mochi; the ushi-oni gets a festival; Datsue-ba becomes a wish-granter; the kettle-oracle at Kibitsu is a defeated oni employed as a divinity (narigama). Pacification-by-adoption is Japan's standing answer to grievance — which means, read honestly, that the religious landscape is partly a settlement negotiated with its own victims.
The failure mode
What the system cannot settle, it contains: shichinin-misaki's fixed roster of seven, trading one release per new death — unrest conserved, forever in transit.
Assembly note: no new claims; sequencing of drafted, cited material only.