Register note: disease folklore is grief folklore with a vector. The delight voice applies only where the tradition itself plays (the amabie challenge earned it); the sankai and possession material keep the documentary register.
The wing's sovereign
Gozu Tennō, the ox-headed plague king of Gion — whose founding legend is a hospitality audit: the incognito god refused by the rich brother, sheltered by poor Somin Shōrai, and the reward "epidemiological" — the chinowa reed ring and the amulet formula descendant of Somin Shōrai, still distributed. "Hospitality as vaccination." Kyoto's Gion Matsuri — the floats the world photographs — "emerged from this tradition, functioning as a plague-prevention ritual," still running. And the Meiji edit (the deity renamed to Susanoo by decree) gives the wing its state-power lesson: "the provenance discipline applies to gods."
The prophecy division
The yogen-jū — beasts that surface, prophesy, prescribe their own portrait, and vanish:
- Amabie, 1846, one kawaraban — "draw a picture of me and show it to those who fall ill" — possibly a typo for amabiko, and in 2020 the instruction executed at national scale (#amabiechallenge; the health ministry's official messaging): "a yokai fulfilling its own 174-year-old instruction."
- The kudan, the human-faced calf — born, prophesying epidemics and famines, dead in three days; its wartime rumor-career documented from Edo broadsheets to 1943 Kobe. Its cousin the kutabe carries the hakutaku image-medicine lineage.
- The genre is "viral media about itself... Edo print culture inventing the share button."
The household division
- The keukegen: a Sekien pun that post-Edo sources stationed in the damp crawlspace and correlated with household illness — "a pun acquiring an epidemiology," and the epidemiology (damp = sickness) is simply true.
- The amazake-babaa's knock — refuse the amazake-offering voice at the door and be spared. Set against Somin Shōrai's door: "there you refuse the visitor; here refusing damns you; the difference is which visitor, and folklore's whole craft is teaching you to tell."
- Possession-illness (otora-gitsune and the complex's symptom-lists) and the birth-room (sankai) hold the wing's clinical files.
The sickroom itself (promoted from open threads, 2026-07-29)
The wing's sovereign holds the festival; the hōsō-gami, the smallpox god, holds the room — and the room is where the tradition did its most concentrated design work. When the disease arrived the sickroom went scarlet: red prints on the walls, red toys at the pillow, red undergarments on the patient, because red "symbolized good prognosis during infection and represented health as a protective force" and because the god was said to dislike it. Both halves at once — red repels the disease and red is the cure (the whole doctrine is laid out on the red things). The akabeko is the sharpest instrument in it: a red papier-mâché cow, painted from 1713 with spots "representing pustules" — a toy pre-infected on the child's behalf. A decoy patient.
Two further details make this the wing's most human file. First, the practice split: some regions expelled the god, others appeased him — the same argument the wrath system runs about vengeful dead, conducted at a bedside. Second, and belonging in the documentary register: after inoculation arrived, communities held send-off boats for the departing deity. A retirement party for a defeated epidemic. Ryūkyū's vigils went further and called the pustules "beautiful sores" — which is not denial but the oldest bedside technology there is: say the good outcome out loud in the room where it hasn't happened yet.
The north's contribution
The mintuchi: Okikurmi's 61 grass-soldiers animated to fight the smallpox god, their survivors demobilized into the rivers — the only tradition in this bestiary where the water-spirits are veterans of a public-health campaign.
What the wing teaches
Before germ theory, disease was a visitor — and every entry here is door-protocol: whom to admit (the incognito god), whom to refuse (the amazake voice), what to post on the door (the amulet, the drawn amabie), what lives under the floor if the house stays damp. The wing's counter- measures are the whole bestiary's most successful artifacts — chinowa rings still stepped through every June, Somin amulets still sold, an amabie on government posters within living memory. Plague folklore never retired; it just waits between epidemics.