Abe no Seimei安倍晴明
the fox-born diviner
ChronicleJapan's yokai keep meeting the same man.
Field-guide entries
In this wing
Aobōzu青坊主
the blue monk
RegionalThe aobōzu is one name wearing a different mask in every prefecture: a one-eyed monk by a thatched hut in Sekien; a child-snatcher in spring wheat fields; a toilet-haunting blue face in Tōhoku schools; a small mountain god demanding sumo matches in Yamaguchi.
Gaki餓鬼
the hungry ghosts
ChronicleThe gaki are hunger perfected as punishment: reborn for greed into bodies with enormous bellies and needle-thin throats — appetite made infinite, satisfaction made impossible.
GeGeGe no Kitarōゲゲゲの鬼太郎
the revival's vehicle
RegionalThe single most consequential work in modern yokai history: Mizuki's 1960 manga (anime from 1968, then roughly once a decade through 2020 — six series, each generation meeting the yokai anew).
Hakuja白蛇
the white snake, sacred by pigment
RegionalThe white snake as institution: venerated as Benzaiten's messengers and wealth-bringers, enshrined at temples and shrines nationwide, with the standing folk terms — "killing them brings misfortune...
Hakuzōsu白蔵主
the fox in the priest's robes
Edo catalogAn old fox learns a hunter is setting traps — the hunter's uncle is the priest Hakuzōsu, so the fox becomes him: robes, voice, sermon and all, and visits the nephew to preach against fox-hunting.
Haya-tarō / Shippeitarō早太郎
the dog who broke the sacrifice
RegionalThe tradition's greatest dog.
Himamushinyūdō火間虫入道
the idler's ghost who ruins overtime
Edo catalogFrom under the veranda, at night, an old monk-thing hauls its torso up to lick the lamp-oil of people working late — dimming and dousing the lights of the diligent.
Hitobashira人柱
the human pillar
ChronicleWhere a dam kept failing, a bridge kept washing out, a keep kept cracking — tradition says the cure was a person, buried in the foundation as prayer made permanent: the hitobashira, "human pillar".
Hitodama人魂
the soul flame
ChronicleA ball of pale fire with a trailing tail, drifting from a house where someone is dying, toward the temple or toward a loved one's door.
Hitokotonushi一言主
the god of one word
ChronicleMount Katsuragi's god — met at the summit of his career in 460 CE, when Emperor Yūryaku, out hunting, encountered a figure dressed identically to himself.
Hōichi the Earless耳なし芳一
the performance the dead demanded
ChronicleThe blind biwa player Hōichi performed the Tale of the Heike so movingly that "even the goblins could not refrain from tears" — and his greatest audience turned out to be the tale's own subjects: a samurai retainer led him, night after night, to recite the fall of the house of Taira before what he believed was a nobleman's court.
Hōsōshi方相氏
the exorcist who became the demon
RegionalThe court's exorcist at the year-end tsuina (the oni-expelling rite Setsubun descends from): a masked officer in "a four-square mask with four eyes, right hand holding a spear, left hand holding a large shield," draped in bear skin — striding through the palace driving the epidemic demons out.
Hyakki Yagyō百鬼夜行
the night parade (doctrine page)
ChronicleThe concept the whole project is named for: the Night Parade of One Hundred Demons — the yokai en masse, processing through the capital's streets on appointed nights, a thousand-year-old idiom "with no single canonical interpretation".
Inō Mononoke Roku稲生物怪録
the boy who out-waited the parade
RegionalMiyoshi, Hiroshima, 1749.
Inoue Enryō井上円了
the man who studied ghosts to kill them
RegionalThe humans wing gains its ironist.
Jami邪魅
the malice classified
Edo catalogSekien's plate carries its own definition: "Jami is a kind of chimi — surely the evil vapor of wicked spirits".
Jinmenju人面樹
the tree of laughing faces
ChronicleA tree whose flowers are human heads.
Jizō地蔵
the guardian at the river of stones
ChronicleAt the Sai no Kawara — the stony banks of the dead's river — the children who died too soon "are condemned to stack piles of stones, in vain, since the piles are repeatedly toppled by oni" — a Sisyphus built for the smallest.
Kakurezato隠れ里
the hidden village
ChronicleDeep in the mountains, past a cave or a wrong turn no map repeats, a hunter stumbles into a village at peace: warm climate, no strife, kind hosts, comfortable days.
Kamikakushi神隠し
spirited away (concept page)
RegionalThe doctrine behind half the tradition's abductions: kamikakushi — "hidden by the kami" — the reading of an unexplained disappearance as taken, by gods, tengu, or foxes.
Kanashibari金縛り
the metal binding
RegionalYou wake and cannot move — conscious, pinned, a weight on your chest, often a presence.
Kangiten歓喜天
the elephant god nobody is shown
RegionalGanesha in Japan: elephant-headed, human-bodied — and in his defining Japanese form, two figures embracing, male and female, "typically kept as a secret icon hidden from public view".
Komayō駒妖
the shogi enchantress (SUSPECTED HOAX — the source list's own contamination specimen)
NetloreA beautiful enchantress in a midnight-blue kimono who appears on full-moon nights in Kansai's "chess bars and net cafés," challenging victims to a shogi-variant; losers' souls become yūrei; origins vaguely "traced to the Kamakura era, though historical sources are lacking".
Konjaku Monogatarishū今昔物語集
the thousand-tale warehouse (source anchor)
ChronicleWhere the tradition goes when it needs a tale's oldest telling: the Konjaku Monogatarishū — "over one thousand tales," early 12th century, anonymous, 28 of 31 volumes surviving — organized as Buddhism's eastward journey: India, China, Japan.
Kosodate-yūrei子育て幽霊
the ghost who bought candy
RegionalA candy shop, night after night: a pale young woman buys ame with a single coin.
Kubikajiri首かじり
the head-gnawer (a 1966 invention)
Modern inventionThe circulating lore: a person who starved to death while others withheld food becomes a spirit that visits the graves of those who refused it, digs up their corpses, and gnaws the heads.
Kūkai / Kōbō Daishi空海
the man who became an explanation
RegionalKūkai (774–835): founder of Shingon esoteric Buddhism, student of Huiguo in Tang China, builder of Kōyasan and Tōji, calligrapher-poet-engineer — "among Japan's most accomplished individuals" by any accounting.
Kuzunoha葛の葉
the fox who left a poem
Edo catalogThe fox-wife tale-type's crowning version.
Kuzuryū九頭竜
the nine-headed dragon, three conversions
RegionalNine heads, three addresses, one arc — the dragon subdued into office:
Kyūso旧鼠
the old rat
Edo catalogA rat aged past a century into yokai-hood — the rodent entry in the tradition's universal rule that anything old enough turns.
Lafcadio Hearn / Koizumi Yakumo小泉八雲
the transmitter
ChronicleSix of the primary texts archived for this bestiary come from one man: a Greek-Irish wanderer, blind in one eye, abandoned serially in childhood, who arrived in Cincinnati at 19 with "$5 in his pocket," became a crime reporter, was fired for his interracial marriage, documented Creole New Orleans — and landed in Japan in 1890, where he became Koizumi Yakumo, married Koizumi Setsu of a Matsue samurai family, taught school, and wrote the books that carried Japan's ghosts into English.
Minamoto no Yorimitsu / Raikō源頼光
the demon-slaying office
RegionalThe humans wing has diviners, cataloguers, and transmitters; here is its department of enforcement.
Mizuki Shigeru水木しげる
the reviver
Modern inventionEvery yokai a modern person recognizes was carried to them by one man.
Momonjii百々爺
the old man at the crossroads
ChronicleAn old man with a heavy staff, met on desolate roads and crossroads in harsh weather; the encounter itself causes illness — Sekien, Konjaku Gazu Zoku Hyakki (1779).
Nihon Ryōiki日本霊異記
the book where it all starts (source anchor)
ChronicleIf the tradition has a birth certificate, it is this book.
Noppera-bōのっぺらぼう
the faceless one
RegionalA person like any other — until they turn, or wipe a hand across their face, and there is nothing there: "no eyes or nose or mouth," an egg of skin.
Onikuma鬼熊
the demon bear of Kiso
Edo catalogAn ancient bear of the Kiso Valley turned yokai: it comes down from the mountains at night, "walks upright like a human," and carries off cattle and horses "back to the mountains for consumption" — Ehon Hyaku Monogatari (1841).
Onmyōdō陰陽道
the state's department of the invisible
RegionalThe tradition's monsters had a government agency.
Onryō怨霊
the vengeful spirit (doctrine page)
ChronicleThe class page for the tradition's angriest wing.
Orikuchi Shinobu折口信夫
the deductive folklorist
Regional1887–1953. Folklorist, literary scholar, and poet — publishing verse under the pen name Shaku Chōkū (釈迢空).
Ōyamatsumi大山祇神
the mountain father who priced mortality
ChronicleThe great mountain god — father of the tradition's most consequential wedding offer.
Rokurokubiろくろ首
the long-necked woman
Edo catalogBy day an ordinary woman — usually unaware of her own condition; by night a neck that stretches like a pulley-rope toward the lamp oil, or in the older form, a head that detaches entirely and flies.
San'yūtei Enchō三遊亭圓朝
the voice of the ghost stories
RegionalThe tradition's tales were painted (Sekien), novelized (Akinari), translated (Hearn) — and spoken.
Sansei山精
the backwards-heeled mountain imp
Edo catalogA knee-high to waist-high mountain imp on one leg — with the heel mounted backwards, toes pointing behind [ja-sansei, per the Wakan Sansai Zue citing the Baopuzi].
Shichifukujin七福神
the seven lucky gods (grouped entry)
RegionalThe seven-god board of fortune: Ebisu (the one native Japanese member), Daikokuten, Bishamonten, Benzaiten (the Hindu-Buddhist arrivals), Fukurokuju, Jurōjin (the Daoist stars), Hotei (the Chan monk) — an intentionally international committee: six imports and one local, assembled by Edo popular religion into Japan's most beloved divine unit.
Shijin四神
the four guardian beasts
RegionalFour beasts, four directions, four seasons, four colors: Seiryū the azure dragon (east), Suzaku the vermilion bird (south), Byakko the white tiger (west), Genbu the black tortoise-snake (north).
Shimenawa注連縄
the rope that draws the line
RegionalThe tradition keeps insisting on boundaries: the sealed pass of Yomi, the kimon corner, the birth-hut door.
Shio-no-Chōji塩の長司
the man who ate his horses
Edo catalogA wealthy Kaga merchant, master of 300 horses, who developed a taste for horse flesh — dead horses prepared "as miso and salt-pickled dishes," eaten regularly.
Sodehiki-kozō袖引き小僧
the boy who pulls your sleeve
RegionalDusk, Saitama, a hurrying traveler: a tug at the sleeve.
Sorei祖霊
the dead, promoted on schedule
RegionalThe system the whole ghost-tradition presumes: the dead undergo "successive rituals, eventually becoming ancestor spirits through an enshrinement ceremony conducted 33 years post-death" — after which they "lose individual identity and merge with the ancestral collective".
Sugawara no Michizane菅原道真
the thunder scholar
RegionalThe gentlest man in the tradition and its most feared ghost.
Sunekosuriすねこすり
the shin-brusher
RegionalOn rainy Okayama nights, something soft and dog-like presses through a walker's legs — brushing the shins, tangling the stride — and does nothing else [wikipedia-sunekosuri, per a 1935 yōkai dictionary].
Tatarigami祟り神
the curse gods (concept note)
RegionalThe widest category in the tradition's wrath taxonomy: tatarigami — "a category of wrathful or inimical spirit" spanning Shinto, Buddhist, and syncretic practice, "rang from primordial deities like Yamata-no-Orochi to the restless dead seeking retribution".
Tengu天狗
the heavenly dog
ChronicleThe tengu is Japan's mountain lord: a Chinese "celestial dog" that arrived as a comet omen, grew wings and a beak, made war on Buddhism, then rose — by way of the mountain-ascetic imagination — into a red-faced, long-nosed demigod who teaches swordsmanship, punishes arrogance, and owns the peaks.
Tesso鉄鼠
the iron rat
ChronicleThe priest Raigō of Mii-dera prayed an heir into existence for Emperor Shirakawa — and was cheated of his promised reward by temple politics.
The Spirit Glossary
the roster's vocabulary block (grouped entry)
RegionalThis bestiary's roster (built from a Wikipedia list that swept in vocabulary alongside creatures) carries a block of concept-words — terms, not beings.
Toriyama Sekien鳥山石燕
the cataloguer
Edo catalogThe single most consequential person in yokai history was a frustrated Kanō-school painter who turned to woodblock.
Tsukumogami付喪神
the tool spirits (doctrine page)
RegionalThe doctrine behind an entire tier of the tradition: tools, sufficiently old and used, gain spirits. The umbrella term is tsukumogami, and Sekien's entire fourth catalog (1784) is a parade of them — the lute that plays itself, the mirror that shows other things, the mask with a soul.
Ueda Akinari上田秋成
the tradition's great literary artist
RegionalIn 1776 — the very year Sekien published his first catalog — another Osaka man perfected the yokai's literary form.
Uji Shūi Monogatari宇治拾遺物語
the human-scale collection (source anchor)
ChronicleThe setsuwa trilogy's third and warmest shelf: the Uji Shūi Monogatari — "gleanings of Uji" — early 13th century, anonymous, 197 tales in 15 volumes, "from nobles to commoners," from the mundane to the fantastical, and — distinctively — light on sermon: the collection that let its tales be funny.
Ushi no Toki Mairi丑の時参り
the shrine visit at the hour of the ox
Edo catalogBetween 1 and 3 a.m.
Yamauba山姥
the mountain crone
RegionalThe yamauba is the mountain's old woman: golden-white unkempt hair, filthy tattered kimono, and — in the darker tellings — a second mouth hidden under the hair on top of her head.
Yanagita Kunio柳田國男
the founder
RegionalEvery serious claim this bestiary makes eventually routes through one man: Yanagita Kunio (1875–1962), agriculture-ministry bureaucrat turned founder of minzokugaku — Japanese folklore studies — whose 1910 Tōno Monogatari is this bestiary's primary anchor for the zashiki-warashi and the red-faced kappa, and whose theories (the one-eyed fallen gods, the giants as demoted deities, the mujina etymologies) recur through our entries as the standard scholarly layer.
Yatagarasu八咫烏
the crow that navigated an empire
RegionalThe three-legged crow sent by Takamimusubi to guide Emperor Jinmu's eastern campaign through the Kumano mountains to Yamato — the founding navigation of the founding dynasty, outsourced to a bird.
Yōkai妖怪
the word itself (master definition page)
RegionalTwo kanji, each meaning "suspicious, doubtful" — from Chinese yāoguài, but grown into meanings the Chinese word never held.
Yorishiro依り代
the vessel doctrine
RegionalThe occupancy law under the whole tradition: yorishiro — objects "where Shinto deities temporarily descend and manifest".
Yuki-onna雪女
the snow woman
RegionalThe yuki-onna is winter given a face: a tall pale woman in white who appears in snowstorms, floats without footprints, and freezes the unwary with her breath.
Yūrei幽霊
the faint spirit (doctrine page)
Edo catalogThe general theory of Japanese ghosts, carried as a doctrine page so the many yūrei entries share one theology.