Famous Yokai |
Japan's Most Iconic Yokai, Oni, and Monsters

Powerful yokai with horns. Though fearsome in appearance, many are gentle at heart.

The kappa is among the most famous of all Japanese yokai, said to dwell wherever there is water—rivers, ponds, and marshes alike. It stands about the height of a four- or five-year-old child, with a water-filled dish (sara) set into the crown of its head, a shell on its back, a beak for a mouth, and webbed hands and feet. Its body is greenish or reddish in hue and is sometimes described as smelling fishy. That dish on its head is the very source of its power: should the water spill or dry out, the kappa is believed to lose its strength at once. From this came the well-known trick of bowing deeply to a kappa so that, returning the courtesy, it tips the water from its dish and can be caught. The kappa has two faces. One is fearsome—dragging people and horses into the water and taking their lives. The other is dutiful—keeping its promises faithfully, delighting in sumo, and sometimes passing on miraculous bone-setting remedies. Found across the whole country, it goes by more than eighty regional names: Garappa, Medochi, Enko, Hyosube, and many more. Among all the yokai of Japan, few are so deeply rooted in local life.

The tengu is a yokai and quasi-divine being said to dwell in the mountains of Japan, a lord of the heights inseparably bound to the yamabushi ascetics of Shugendō. Its forms fall broadly into two lineages. One is the long-nosed tengu, with a ruddy face and high nose, clad in the garb of a mountain ascetic, bearing a feather fan and one-toothed high clogs; the other is the crow tengu, with a crow's beak and wings, and beneath them follow lesser kin such as the leaf tengu and the wood-chip tengu. What was once conceived as a bird like a black kite hardened, over the medieval period, into the image of the long-nosed mountain ascetic. The tengu is at once a demon that obstructs the Buddhist Law and, once subdued, a guardian deity who protects it—this dual nature is the essence of the tengu. The notion that an arrogant high monk falls and becomes a tengu was bound to the Buddhist "way of the tengu," and was depicted as satire in late-Kamakura picture scrolls. Within mountain worship, on the other hand, the tengu was revered as guardian of the mountain and master of martial and magical arts, a being that tests or guides the practitioner. From Mount Kurama and Mount Atago in Kyoto onward, each of the sacred mountains of the realm was said to have its own great tengu, and the early-modern Tengu Sutra counts their number at forty-eight.

The Nine-Tailed Fox is a spirit-fox said to have lived so long and gathered so much power that its tail divided into nine. Yet the name does not simply mean a fox with many tails. In Japanese yokai imagery, the Nine-Tailed Fox is the largest and most complicated fox figure of all: it joins fox worship, Inari belief, fox possession, tales of beauties who unsettle royal power, and the narrative line that runs from Tamamo-no-Mae to the Sesshoseki killing stone. Its source lies in Chinese antiquity. In the Nanshan jing section of the Shan Hai Jing, Mount Qingqiu is home to a beast shaped like a fox, with nine tails, a cry like an infant, and a taste for human flesh. This fox is monstrous; yet in ancient China the nine-tailed fox could also be a propitious beast, an omen of peace. Later Chinese and Japanese texts layered the auspicious fox and the bewitching fox onto one another, turning the nine-tailed fox into both a sacred beast and a nation-ruining spirit. In Japan, fox lore spread in two directions. On one side stood the white fox, messenger of the Inari deity, guardian of fields, business, and household prosperity. According to Fushimi Inari Taisha, Inari descended on Mount Inari in 711, and the faith now extends to roughly thirty thousand shrines across Japan. On the other side stood the wild foxes and possessing spirits that deceive people, cling to households, or take hold of a region: yako, kuda-gitsune, osaki, izuna, and others. The Nine-Tailed Fox stands between these poles. It has the noble aura of a near-divine white fox, but also the danger of entering human society from within and shaking power itself. In Japan, the figure was fixed above all by the stories of Tamamo-no-Mae and the Sesshoseki. Tamamo-no-Mae is told as a peerless beauty loved by the retired Emperor Toba; exposed as a fox, she flees to Nasu, is slain, and becomes a poisonous stone. The three names are related, but they are not interchangeable. The Nine-Tailed Fox is the true form; Tamamo-no-Mae is the courtly incarnation; the Sesshoseki is what remains after death. Once those stages are joined, the fox is no longer just an animal that tricks humans. It becomes a great spirit-fox carrying beauty, intellect, politics, death, and pacification.

Yuki-onna is an apparition that takes the form of a woman on snowy nights, mountain roads in blizzards, and villages buried in white. The familiar image is of a young beauty in white who freezes people with her cold breath, but that is not the whole of Yuki-onna. In Tateshina, Nagano Prefecture, she is told of as a “spirit woman of the snow” who harms no one and carries felled trees across ravines by night to make bridges. A record from Niigata describes a woman who leaves blood-speckled footprints in the midnight snow and kills those she meets. In Akita she is a woman with a smooth, featureless face; in Shōwa Village, Gunma Prefecture, a threat mothers recited on snowy nights to children who cried or would not sleep; and in Wakasa Town, Tottori Prefecture, a white woman who arrives riding a heavy snowfall. Under the same name stand a harmless snow spirit, a deadly encounter, a child-minding phrase, and even a figure glimpsed only for an instant. The name’s history begins in haikai poetry before it appears in ghost-story collections. An early printed example with a confirmed publication date is a verse in the 1642 anthology *Takatsukuba*, compiled by Yamamoto Saibu; “Yuki-onna” was then repeatedly used in works such as *Kebukigusa*, *Yama no I*, *Konzan-shū*, and *Masuyama-i*. The word first invited the wit of imagining the whiteness and form of snowy scenery as a woman, then gradually acquired clearer contours as the name of a supernatural being. Volume five of *Sōgi Shokoku Monogatari*, published in 1685, describes a young white woman about one jō—roughly three meters—tall, standing beside bamboo in Echigo. Her face, hair, skin, and even her unlined white robe are translucently white; a companion explains that she is a snow spirit taking human form. Although the title bears the name of Sōgi, this is not the travel journal of a fifteenth-century renga poet. It is a kana-zōshi of 1685 that borrows Sōgi’s persona as a traveler to tell tales of curiosities from around the country. Sawaki Sūshi’s *Hyakkai Zukan* (1737) and Toriyama Sekien’s *Gazu Hyakki Yagyō* (1776) place Yuki-onna in an image as a named yōkai in her own right. Sekien’s page gives only the name “Yuki-onna”; it does not say that she freezes people with her breath, seduces men, or fears fire. Yōkai pictures made a form easier to share, but did not supply every later story at once. The best-known story today is “Yuki-Onna,” which Lafcadio Hearn included in *Kwaidan* in 1904. In a ferry hut during a blizzard, Yuki-onna freezes the old woodcutter Mosaku to death with her white breath, then spares the young Minokichi and orders him to keep the night secret. The following winter she appears as Oyuki, a traveling woman, becomes his wife, and raises ten children. When her husband tells the forbidden memory, she reveals herself; for the children’s sake she does not take his life, but leaves as white mist. This marriage, secrecy, maternal attachment, broken promise, and separation made Hearn’s Oyuki especially memorable, but they are not traits shared by every local Yuki-onna. The appeal of the name Yuki-onna is that it does not close around a single setting. Snow erases roads, absorbs sound, and transforms distance and shape. In different places and periods, people who looked at snow found a young woman, a mother, a giant face, or a wavering shadow within it. Yuki-onna is the whole accumulation of those images.

The zashiki-warashi is a household kami or uncanny presence said to dwell in old homes in Tōhoku, especially Iwate. It is often described in a child’s form, but no single appearance defines it. Kunio Yanagita’s Tales of Tōno, Tale 17 records a boy of about twelve or thirteen; in the same tale, an unseen presence makes itself known only by the rustle of paper in the next room and the sound of snuffling. Tale 18 speaks of two young girls, while later local accounts include a child in a red kosode, an old woman, an old man, and beings that show only long, slender hands. The zashiki-warashi is also associated with a household’s prosperity and decline. Tales of Tōno calls it a “kami” and says that a home where it dwells may enjoy wealth and distinction; other stories tell of a household’s fortunes failing after the child has left. This is not a uniform portrait of a capricious being that metes out punishment. It is a folkloric way of linking an inhuman presence felt within a home with that home’s flourishing and decline. The name “zashiki-warashi” seems to have functioned less as the proper name of one being than as an umbrella term for uncanny presences described inside the home. The setting may be a formal room, storehouse, kitchen area, earthen-floored room, or beneath the floor—spaces at the edge of daily life and the house itself. Such a presence may meet a person, or be reported only as a sound, an oppressive sensation, or an unfamiliar shadow. The child figure is an important representative image, not a standard form that erases the range of these accounts. Kizen Sasaki’s collected accounts do not reduce the zashiki-warashi to a simple “child who brings happiness.” They encompass distinct stories associated with formal rooms, storehouses, kitchens, and underfloor spaces, and their names vary from place to place. Some records consider links with the deaths of infants or infanticide, but Sasaki presents these as matters for comparison rather than declaring them the origin of every zashiki-warashi. The term names a broad and varied body of tradition: a sense that someone else is present within the home, carried forward through local memory and stories of a household’s fortunes.

Rokurokubi is known as a yōkai whose neck stretches unnaturally long at night. Read older books in chronological order, however, and no single form emerges. Under the same name gather figures close to the nukekubi, whose heads separate completely and fly; people who experience the event only as a dream; bodies and heads that appear linked by a thin line; and figures able to lengthen a long neck at will. The earliest currently identifiable candidate for the name is "rokurokubi" in volume two of the haikai anthology *Takatsukuba*, listed by the *Nihon Kokugo Daijiten* as an example from 1638. Yet surviving bibliographic records also date the book to 1642, so the original must be checked again before calling it an absolute first appearance. The name "Rokurokubi" appears in *Seishō Senku* in 1648, and the title "Rokurokubi of Fuchū in Echizen Province" appears in *Shokoku Hyaku Monogatari* in 1677. These early examples show that the name was spreading from the middle to late seventeenth century. In *Sorori Monogatari*, set in Echizen, a man meets a woman's head on a night road and follows it; when the head flies into a house, the sleeping woman says she has dreamed the frightening dream of being pursued by him. Ashamed of her own deluded thoughts, she enters Buddhist practice, but the story does not say she became a monster through jealousy. The strange event is one in which a person's mind or soul seems to have left the sleeping body. China's *Soushen ji* includes a woman of the Luotou people whose head flies by night and returns to her body at dawn. In the *Youyang zazu*, the Feitou Liaozi develop a ringlike red mark on the neck, sprout wings from the head, and eat crabs and earthworms. These closely resemble Japanese detached-head forms, but they do not prove that Chinese tradition simply became a Japanese yōkai. In Japan, knowledge from Chinese texts, ghost stories, illustrated books, and comic kibyōshi overlapped to shape several images of the rokurokubi. The 1737 *Hyakkai Zukan* depicts a nukekubi, while Toriyama Sekien's *Gazu Hyakki Yagyō*, first published in 1776, presents Hitōban (飛頭蛮) with the reading "rokurokubi". In Sekien's image, a sleeping woman's body and floating head are joined by a slender line. One study argues that such lines were later represented as elongated necks. In *Kyōgen Suehirogari* (1788), the neck of a woman in love stretches from Edo to Kamigata, producing laughter rather than fear. Lafcadio Hearn's "Rokuro-Kubi," included in *Kwaidan* in 1904, is not about a beautiful woman with a long neck. Kwairyō, a samurai turned monk, meets five headless bodies and five heads flying through woods in the mountains of Kai; he moves one body to prevent a head's return and fights the attacking head. Its direct source story is an episode in volume four of Jippensha Ikku's *Kaibutsu Yoron*. The red writing, the tactic of moving the body, and power limited until dawn belong to this particular line of tales.

Nurarihyon is a yokai known in Edo-period imagery by his name and the figure of an old man with an enlarged, bald head. The name now often suggests an elusive arch-yokai, yet the earliest sources offer less a detailed history than a striking name and silhouette. The named humanoid figure in Sawaki Sūshi’s Hyakkai Zukan (1737) ranks among the oldest surviving depictions whose date can be established. Toriyama Sekien’s Gazu Hyakki Yagyō, first published in 1776, also helped circulate this image of an old man. These images say little about Nurarihyon’s origins or actions. Their silences invited invention: a “ringleader of monsters” in modern writing, an old man who enters a busy household in a children’s encyclopedia, and a leader of a faction in manga and animation. The journey from a silent image to a story’s central figure is itself one of Nurarihyon’s great fascinations. The history of the name is no simpler. The Seisenban Nihon Kokugo Daijiten cites a 1679 adverbial use of nurarihyon in Saikaku Gohyakuin, and a use as the name of a creature in Rigen Shūran from around 1797. A regional record from Akita names it as a member of a hyakki yagyō procession, while the Bisan Strait has a report of a differently shaped marine apparition. Across images, regional records, and modern reception, the same name has taken on a rich succession of forms.

Karakasa-kozou is a pop icon representing Japanese yokai and is synonymous with tsukumogami (object yokai). Its most famous appearance is hopping around on one leg wearing a geta (wooden clog), with one large eye wide open and a long tongue hanging out. However, this iconic imagery did not naturally emerge from folklore; it was artificially shaped by the publishing culture and toys of the early modern Edo period. Umbrella yokai are depicted in the Muromachi period's *Hyakki Yagyo Emaki* (Night Parade of One Hundred Demons Scroll), but there they take the form of humanoid demons wearing closed umbrellas on their heads, differing from the one-legged figure we know today. It was during the late Edo period that the "one-eyed, one-legged" characteristics became fixed through kusazoushi (illustrated storybooks), toy prints, monster playing cards, and kabuki stage props, making it widely loved by the public as a charming and comical monster.

The core terror of the Noppera-bo lies in the sudden disappearance of the "face"—the most fundamental unit of human recognition. It stands in human form, cloaked in everyday roles such as a weeping woman or a shopkeeper, but the moment it turns around, it reveals a smooth surface devoid of eyes, nose, or mouth. Rather than the fright of a monstrous appearance, the true horror is the shattering of the "judgment that trusted the other to be human." In "Mujina," collected in Lafcadio Hearn's "Kwaidan," a man encounters a faceless woman on the Kii-no-kuni-zaka slope in Akasaka. He flees to a soba noodle stand, only to find that the shopkeeper also turns around to reveal the same faceless visage. This two-stage repetition elevates the Noppera-bo from a mere grotesque apparition into an anomaly that strips away one's sense of a safe haven. Rather than an independent "species," the Noppera-bo is a faceless humanoid anomaly distilled from folklore motifs where shape-shifting beasts like mujina (badgers), tanuki (raccoon dogs), and foxes frighten humans. In Kenji Murakami's "Yokai Jiten" (Yokai Dictionary), it is categorized alongside legends of mujina and bake-danuki (monster tanuki) as an apparition that appears on dark roads, slopes, and watersides. Through Shigeru Mizuki's yokai illustrations, this ambiguous shape-shifting trope was consolidated into a powerful visual icon—a face stripped of features—cementing the image that modern audiences immediately envision. In essence, the Noppera-bo is a yokai born from the ancient tricks of beasts, refined through modern ghost stories and visual culture into an entity whose very theme is the loss of the face.

Nekomata is one of the most widely known and complexly evolved supernatural beings in Japanese folklore. Its form is depicted either as a beast that has grown gigantic over the years, or as a monstrous cat with a tail split into two. There are two distinct lineages for the concept of this yokai: one is the "terrifying beast Nekomata living in the mountains," seen in Kamakura period literature, and the other is the "Nekomata as a house yokai, an old cat kept in a home for many years that transforms," which became established from the Edo period onward. In Japanese folk belief, cats are often seen as entities concealing demonic or spiritual powers, and the awe of a creature crossing that boundary crystallized into the image of this two-tailed yokai.

A domestic cat that has grown old and gained supernatural powers. Said to take human form, speak, manipulate the dead, cast curses, and more; often confused with the nekomata. Licking lamp oil is viewed as a sign of impending strangeness, and long-tailed cats were believed more likely to transform. As cities expanded, everyday cats took on a mystical aura, and Edo-period books and prints popularized the image.

Tsukumogami (付喪神) is a term used for tools and household objects that, after being used for a long time, acquire a non-human form and agency. Today, it is widely used as a catch-all term for yōkai born from old tools, but its usage in classical literature is not that common. The representative material that explicitly states this name and places it at the center of the narrative is the *Tsukumogami Emaki* (Picture Scroll of Tsukumogami) or *Tsukumogami Ki*, believed to have been created in the Muromachi period. In that work, even though they are written with the character for "kami" (god), they are not initially deities that grant blessings to humans. They are depicted as "yōbutsu" (monsters or goblins) that resent the humans who discarded them, attack people and livestock in the capital, and eventually embrace Buddhism. The beginning of the picture scroll cites a theory from the now-lost *Onmyō Zakki* (Miscellaneous Notes on Yin and Yang), stating that after "one hundred years," utensils acquire spirits and deceive human hearts, and these are called Tsukumogami. On the other hand, the sound "tsukumo-gami" overlaps with "tsukumo-gami," meaning the white hair of an old woman. It is also recited in the 63rd section of the *Tales of Ise* as "tsukumo-gami, lacking one year to a hundred," making it a word that connects old age and the number ninety-nine. Because these two concepts were intertwined, explanations involving both one hundred years and ninety-nine years coexist. In modern times, there are instances where it is written as "九十九神" (Ninety-Nine Gods), but this is merely a variant spelling designed to make the association with the white-haired old woman more apparent. Therefore, the strict age rule often cited today—that "tools invariably gain a soul upon reaching exactly ninety-nine years"—is not actually established in classical texts. There is no single mold for their transformed appearance. In the *Tsukumogami Emaki*, they change into men, women, the elderly, children, mountain and river goblins (chimimōryō), and beasts; in the illustrations, some grow faces and limbs while retaining the shapes of the original implements like pots, jars, mallets, folding fans, and prayer beads. Although individual tool-yōkai like the Karakasa-obake (umbrella ghost) or Koto-furunushi (old koto master) can be explained as a type of Tsukumogami in later eras, not all supernatural phenomena related to old tools were called "Tsukumogami" from the beginning. In recent years, rather than viewing this as an ancient belief that spread uniformly across Japan, research has advanced to approach it as a cultural history of how picture scrolls, picture books, and storytelling have breathed life into inanimate objects.

A yokai appearing as a flaming ox-cart wheel with the face of a giant monk-like ogre set in its hub. Said to steal the souls of onlookers. It can be warded off by posting a paper on the doorway reading “This is the village of Katsumo.” Illustrated by Toriyama Sekien in Konjaku Gazu Zoku Hyakki, it is a key example in the lineage of wheel-yokai tales and is often discussed alongside Katawaguruma, with a common origin widely proposed.

A yokai depicted by Toriyama Sekien in Konjaku Hyakki Shūi. Countless eyes appear across the paper screen doors of a dilapidated house, staring back at intruders. Sekien’s note suggests a go player’s obsession spread from the board to the entire house, framing it as a haunt residing in the shoji itself. Later encyclopedias call it a literary creation, yet it endures as an emblem of the eerie patterns and dim light cast through shoji screens.

Akaname is a yokai said to appear in old bathhouses or abandoned bathrooms. It is usually depicted as an impish child with a long tongue, sneaking in during the night to lick the grime, mold, and scum stuck to tubs and walls. Although rarely described as harming humans directly, its very appearance was regarded as an omen of uncleanness and served as a cautionary tale to keep the bath area clean. Alternate names include Akaneburi and Aka-neburi.

Shuten-dōji is the central figure in medieval oni-slaying tales that pit an oni king, who carries people away from the capital, against warriors sent into the mountains by imperial command. The stories are set in the reign of Emperor Ichijō and include the historical commanders Minamoto no Yorimitsu and Fujiwara no Yasumasa, but they are not contemporary Heian-period records. The Important Cultural Property *Ōeyama Ekotoba*, held by the Itsuō Art Museum, is the oldest surviving picture scroll of the Ōeyama tradition; it was made in the fourteenth century, during the Northern and Southern Courts period. Reading the Heian setting separately from the work's medieval creation prevents the tale from being mistaken for a record of an actual bandit suppression. Instead, it reflects the world later audiences imagined through Heian warriors and an oni king. His name, too, has never had a single spelling. *Ōeyama Ekotoba* chiefly writes 酒天童子, and the dōji himself says that his retainers call him Shuten-dōji because of his deep love of drink. Other spellings include 酒伝童子 and 酒顛童子 (酒顚童子); 酒呑童子 is now the most widely used. The word *dōji* alone does not establish a particular age, hairstyle, or clerical status. In the Noh play *Ōeyama*, the first-half shite appears in the guise of a youth, while *Ōeyama Ekotoba* portrays his daytime form as a dignified figure about one *jō* tall. The tale broadly divides into a tradition that places the oni king at Ōeyama and another that places him at Mount Ibuki in Ōmi Province. The *Shuten-dōji Emaki* (酒伝童子絵巻) at the Suntory Museum of Art, made in 1522, is considered the oldest surviving example of the Mount Ibuki tradition. These are not simply the same story with one mountain name substituted for another: the cast of characters, the name of the sake, and the oni king's appearance and past all differ among copies. Accounts of Ōeyama, Mount Ibuki, Echigo, and Oinosaka therefore cannot be joined into one certain biography for a single Shuten-dōji. In the oldest text of the Ōeyama tradition, disappearances continue in the capital until Abe no Seimei's divination points to the oni king of Ōeyama. Imperial orders go to the two commanders Yorimitsu and Yasumasa, who head for the mountain with their retainers. Reducing the story to the later, familiar tale of Yorimitsu and his Four Heavenly Kings obscures the structure of the early copies. In the mountains the party receives yamabushi dress and special sake from manifestations of deities and buddhas, enters the oni castle, and joins the dōji's banquet. By day the oni king takes the form of a dōji about one *jō* tall, displaying dignity and wisdom; at night he becomes an oni roughly five *jō* tall. His head and torso are red, his left foot black, right hand yellow, right foot white, and left hand blue; he has fifteen eyes and five horns. Once he has grown drunk and fallen asleep, the divine manifestations hold him down and Yorimitsu, Yasumasa, and their followers cut off his head. The head still flies through the air and bites the three helmets Yorimitsu wears one over another. Shuten-dōji is not merely a straightforward evil oni overcome by drink. He receives guests as the master of a splendid oni castle and tells of his own wanderings, even as he uses his captives for food. Courtesy toward guests and cruelty, intelligence and an immense oni body, defeat and the flying head stand together in the same story. Noh, *otogi-zōshi*, picture scrolls, printed books, jōruri, and kabuki each circulated different images of Shuten-dōji. Toriyama Sekien also depicted Shuten-dōji, under the spelling 酒顛童子, in his 1779 *Konjaku Gazu Zoku Hyakki*, placing the drunken, reclining dōji and other oni on a page of his yōkai picture book. Rather than a monster fixed in a single form, Shuten-dōji is one of Japan's best-known oni kings, retold through manuscripts, performing arts, and the memories of particular places.

Tamamo-no-Mae is a beauty of unrivaled grace who, in the late Heian period, is said to have served the retired Emperor Toba. Her true form is held to be a nine-tailed fox, yet as a human, Tamamo-no-Mae has above all been remembered as a court lady of rare beauty and deep learning. Poetry and music were a given, but from Buddhist scripture to the old tales of India and China, she answered any question without hesitation, astonishing all at court. The name “Tamamo-no-Mae” carries a story of its own. One night, amid a banquet of poetry and music at the Seiryōden, a gust of wind snuffed out the lamps; in the darkness a dazzling light streamed from her body and lit the hall as bright as day. From this she came to be called “Tamamo-no-Mae,” meaning the lady of the jewel-like, glowing waterweed . Before that, it is said, she had been called Mikuzume. In time she drew all the emperor’s affection to herself, but when he fell ill from an unknown cause, her true nature began to be doubted.

Ootakemaru is a demon god said to have made his stronghold at Mount Suzuka and the Suzuka Pass, located on the border between Ise and Omi provinces. In Otogizoshi and the Tamura stories, he appears as a Great Demon King who steals tributes meant for the capital and repels armies with black clouds, lightning, and rain of fire, only to be slain by Tamuramaru (modeled after Sakanoue no Tamuramaro) and Suzuka Gozen. The Tamuramaru of the story is not the historical Shogun himself, but a heroic figure born from the overlapping of medieval Kiyomizu Kannon worship, boundary beliefs of the Suzuka Pass, and Tamura legends from the Tohoku region. Ootakemaru is also sometimes cited as one of the "Three Great Yokai" alongside Shuten-doji and Tamamo-no-Mae. The fact that his severed head and remains are later incorporated into tales of treasures, temple origins (engi), and burial mounds reflects the medieval significance of a "slain great enemy".

The Nue is a figure shaped by the overlap of an ancient bird name, medieval courtly marvels and warrior tales, and later Noh drama and yōkai art. It is now best known as the monster with a monkey’s head, a tanuki’s body, tiger’s limbs, and a snake’s tail, which emerges from a black cloud over the palace at night and is brought down by Minamoto no Yorimasa. That familiar image, however, cannot be treated as the Nue’s one original form. The combination of body parts varies among textual traditions, and the word nue itself predates the monster: it first named a calling bird. The Yachihoko-no-kami song in Book One of the Kojiki, which includes the line “On the green mountain, the nue cries,” shows that nue was a bird name at least as early as antiquity. The passage is not describing the later composite monster. Modern dictionaries often identify the bird with White’s thrush, but it is more useful to begin by recognizing it as an old bird name than to force a poetic term into a one-to-one modern biological classification. In medieval tales, the Nue as a bird and the Nue as a strange monster appear alongside one another rather than in a simple earlier-and-later sequence. In the Yorimasa story in section 10-56 of Book Ten of Jikkinshō, “Matters in Which One Should Aspire to Accomplishment,” Yorimasa shoots at a Nue calling from the palace hall on a rainy night, judging it to be “a small bird even by day.” By contrast, National Archives material comparing Yorimasaki with an undated printed edition of The Tale of the Heike preserves accounts that describe the creature falling from a black cloud through a combination of monkey, tanuki, tiger, snake, and other animals. From an early period, Nue has been a marvel in which a bird name, an uncanny bird, and a composite beast converge. Later receptions deepened that convergence. In the Noh play Nue, the monster slain in the tale appears at Ashiya as the Nue’s departed spirit. It recounts the misfortune of being set adrift in a hollow boat and asks a monk to perform rites for it. From the late Edo period onward, yōkai paintings and warrior prints repeatedly reimagined Yorimasa, the black cloud, and the composite body. Nue is best read not as a single fixed creature, but as a name that has continued to gather together different texts, performing arts, images, and local traditions.

In ancient records, tsuchigumo was a derogatory label for local powers who defied the imperial court—groups who hid in mountains and caves and resisted rule. Their name appears in the Nihon Shoki and various provincial Fudoki. From the medieval period, Noh drama and picture scrolls reimagined them as giant spider yokai, best known in tales where Minamoto no Yorimitsu (Raikō) slays the monster. Despite the image, they are not related to spiders in a biological sense.

Ushi-oni appears chiefly on the coasts, in deep pools, and in the mountains of western Japan. It is among the fiercest and most numinous beings in the yokai tradition. Its body has no single form: some artists give it a bull's head on an oni's body, while others set the same head on the body of a spider. The Heian-period Pillow Book already names Ushi-oni among the things that inspire terror. Its most striking quality is a radical dual nature. In one guise, Ushi-oni is a cruel man-eater and bringer of disease that spreads poisonous breath without discrimination. In another, it leads a mikoshi procession and uses its tremendous force to drive away other evil spirits. Over time, a frightening presence in literature became part of regional worship and festival performance. Few yokai show so clearly how a destructive power could also be received as a guardian.

Umibōzu is a maritime apparition known along coasts throughout Japan and long feared especially by fishers. A calm sea is said to heave without warning, becoming an immense black shadow or the bald form of a Buddhist monk that blocks a vessel's path. Accounts rarely show a whole body; most describe only a head and shoulders rising above the water. It appears at night or in heavy seas, overturning boats and dragging people into the depths. Edo-period sources including the Wakan Sansai Zue (1712) and the Butsurui Shōko (1775) also record the name of a giant apparition standing at sea.

Gashadokuro is a modern yōkai known as a gigantic skeleton that walks across night fields. Its name does not appear in old village oral traditions or Edo-period yōkai picture books. The earliest presently verified starting point is “A Guide to Japanese Yōkai Around You,” an unsigned article written by Saitō Morihiro in the September 1966 issue of Bessatsu Shōjo Friend. Ryūhei Hirota’s research identifies Saitō as the creator of the yōkai, finds no earlier historical record, and shows that Shigeru Mizuki included it in a yōkai collection two years later as though it belonged among established beings. It is a representative creation of postwar publishing culture, one that challenges the assumption that only inherited, ancient beings can be yōkai. The securely documented core of its early image is a giant skeleton walking across open country. Because the full first article is not publicly available, details visible in scholars’ transcriptions—rattling bones, skulls of people who died by the roadside gathering together, and attacks on people—must be distinguished from settings added by later media. Resentment of war dead or famine victims, blood-drinking, dawn, talismans, and memorial rites likewise cannot all be projected back onto old tradition without establishing which medium said what and when. The hiragana name *gashadokuro* suggests the sound of bones striking one another, but the formal bibliographic record of the first article gives the spelling がしゃどくろ; 餓者髑髏 is a later ateji spelling and must be kept distinct. The image now most readily associated with Gashadokuro is Utagawa Kuniyoshi’s triptych *Sōma no Furu-dairi*. Yet the print predates the yōkai’s creation by about 120 years. Around 1845–46, Kuniyoshi adapted Santō Kyōden’s *Uto Yasukata Chūgiden* and depicted a skeleton summoned by Princess Takiyasha’s sorcery confronting Ōya Tarō Mitsukuni, replacing the several skeletons of the source with a single gigantic one. The skeleton in the print is not named Gashadokuro. Kuniyoshi did not portray that yōkai; postwar yōkai publishing joined a famous image of a giant skeleton to a new yōkai image. The process of giving an earlier image a new name, then having encyclopedias, manga, television, and games share that combination, clearly shows how yōkai continue to be made in the modern era. Gashadokuro’s significance does not lie in false antiquity. A name born in a single Shōwa-era article met a late-Edo image, older ideas about the dead, and the postwar horror boom, becoming a widely known Japanese yōkai in little more than half a century. That process of formation is the giant skeleton’s most firmly documented story.

An old witch-like yokai who dwells deep in the mountains. She is also known as the foster mother of the folk hero Kintaro.

Ubume is a Japanese supernatural phenomenon (yokai) widely believed to be the spirit of a woman who died during childbirth or shortly after, appearing in the form of a woman cradling an infant. In many tales, she stops passersby at night at river crossings, bridges, and crossroads, pleading with them, "Please hold this child." The outcome varies depending on the region and the source: the baby received might suddenly become heavy, turn into leaves or a stone, or the person who manages to hold onto it until the end might be granted superhuman strength or wealth. Therefore, the Ubume is not merely an evil spirit that attacks people. She is an entity that gathers the severed bond between mother and child, the fear of the dead, and the courage and compassion of those who accept her plea into a single tale of an encounter. A famous surviving early example is found in the first half of the 12th century in *Konjaku Monogatari Shu* (Tales of Times Now Past), Scroll 27, Tale 43, "How Minamoto no Yorimitsu's Retainer, Taira no Suetake, Met an Ubume." When Minamoto no Yorimitsu was the Governor of Mino, his retainer Taira no Suetake went to a dark river crossing at night as a test of courage, where he was entrusted with a baby by a woman in the river. Upon returning to the mansion and opening his sleeve, he found only a few tree leaves. At the end of the tale, the narrator juxtaposes the theory that the Ubume is a shape-shifting fox with the theory that she is the spirit of a woman who died in childbirth, without deciding on her true identity. At this stage, the blood-stained waistcloth and bird feathers that became famous in later eras had not yet been depicted. On the other hand, care must be taken with the notation that writes "Kōkakuchō" (Guhō bird) but pronounces it "Ubume." The "nocturnal roaming woman" described in Scroll 16 of the Tang dynasty text *Youyang Zazu* (Miscellaneous Morsels from Youyang) is a Chinese monster bird that becomes a bird when wearing feathers and a woman when taking them off, and has a habit of snatching people's children. Because it involved babies and women who died in childbirth, it was conflated with the Japanese Ubume, but they originally belonged to different lineages. According to the research of Manami Yasui, Hayashi Razan, who assigned the Japanese name to the Chinese Kōkakuchō, first specified in the 1631 *Shinkan Tashikihen* that "Kōkakuchō" is the "Ubume-dori" (Ubume bird) or Nue. While the Japanese Ubume has as its core "a mother's spirit entrusting her own baby to someone else," the Chinese Kōkakuchō has as its core "a bird monster that snatches other people's children." Understanding this difference reveals how the yokai known as Ubume changed its form by layering medieval tales, memorials for those who died in childbirth, knowledge of monster birds from China, and early modern yokai illustrations.

Jorōgumo brings together the name of a living spider, early modern tales of spiders appearing as women, Toriyama Sekien’s image, and local legends of spider pools. It does not name one beautiful woman living at one waterfall; its form and conduct vary by period and source. The written name 絡新婦 was not coined as a literal description of a yokai that “entangles people as a bride.” The *Wakan Sansai Zue* reads it chōrōgumo and says it is commonly called jorōgumo; the spelling sits where a spider name from Chinese materia-medica writing meets the Japanese name jorōgumo. Stories of a woman-spider predate Sekien. In the 1677 *Tonoigusa*, a samurai suspects a young woman carrying a child, cuts her, and the next day finds a wounded jorōgumo and many human remains above the ceiling. In the 1732 *Taihei Hyaku Monogatari*, Sonroku is invited by an old woman to an illusory house, where a girl urges marriage; when he flees, he wakes on his own engawa, the veranda-like corridor along a house, and notices a small jorōgumo and an astonishing number of webs under the eaves. He is not eaten: the story turns on dream and illusion. Sekien’s 1776 *Gazu Hyakki Yagyō* layers spider legs over a long-haired, robed woman and surrounds her with many small spiders. Their curling lines may suggest thread, smoke, or flame, but the image has no explanatory caption and does not show a musician luring a man. A National Diet Library literature search found no classical source that exactly matches the familiar story of a beauty who plays biwa, entices men, and finally eats them. Water-side Jorōgumo stories belong to another layer. In spider-pool tales found around Japan, a spider ties a thread to a person; when it is moved to a tree, the tree is pulled into the water. At Jōren Falls, this thread story joined a taboo story in which a beautiful woman returns a lost hatchet and the man who breaks her secrecy command dies. Keeping sources distinct reveals more than a simple temptress: small spiders underestimated by people, dreams crossing into waking life, hazardous waterside ground, and the way names and pictures collect unlike traditions.

Nure-onna is a waterside apparition with a woman's head and the body of a serpent. Below the waist, an immense scaled body replaces human legs; above it hangs the perpetually wet black hair that gives her the name 'Wet Woman.' In the wind volume of Toriyama Sekien's Gazu Hyakki Yagyō, she appears as a female face on a serpent's body, her long hair trailing in the water. Serpentine women also appear in earlier Edo picture scrolls such as Sawaki Sūshi's Hyakkai Zukan, showing how artists passed the image from one work to another. Stories from western Japan give Nure-onna a different but equally memorable role. She presses the baby in her arms upon a passerby; the moment it is accepted, it becomes as heavy as stone and leaves the victim unable to move. In some versions, Ushi-oni then attacks. Nure-onna is often discussed alongside Kyūshū's Iso-onna and regional traditions of Nure-onago, and has also been interpreted as a sea serpent transformed. Yet the serpent body is supported chiefly by paintings, and primary evidence directly linking every local tale to that image is scarce. Wet hair, the water's edge, and a child that binds the recipient are the more stable features shared across western Japan's female water apparitions.

Inugami are possessing dog-spirits found mainly in western Japan, counted alongside fox possession and kuda-gitsune as a powerful occult force. Shikoku—especially Tokushima, Kochi, and Ehime—is regarded as their heartland, with traces reported from Shimane and Yamaguchi down through Kyushu to the Satsunan Islands and Okinawa. Families believed to host hereditary Inugami—called “Inugami bloodlines”—were stigmatized, leading to marriage taboos and social discrimination. Their form and temperament vary widely by locale, with traditions describing them as mouse-like, weasel-like, or bat-like, among other shapes.

Kama-itachi are yokai said to ride dust devils or sudden whirlwinds, slicing human skin as if by a blade. Victims often feel little pain at first and may not bleed until later. From the Edo period on, they’re depicted as weasels with sickle-like claws, though explanations vary by region—some attribute the cuts to the phenomenon itself, to wind deities, or to minor spirits. The term is also a classical winter seasonal word.

Kodama, often searched in English as “kodamas,” are Japanese tree spirits: presences believed to dwell in old trees, or sometimes in the trees themselves. In older belief, a tree that had lived for many generations could hold a sacred presence, and the delayed voice that returns from a mountain or valley, known as yamabiko, was also understood as a reply from the kodama. The idea reaches back toward Japanese tree divinity: some interpretations connect kodama with Kukunochi, the tree deity named in the Kojiki, while the Heian-period dictionary Wamyo Ruijusho records “Kotama” as a Japanese name for a tree god. Genji monogatari also places kodama among beings that are hard to separate cleanly from oni, kami, or fox spirits, showing that the word already carried an uncanny, yokai-like edge in the Heian imagination. A kodama usually does not look like a separate monster; it may be indistinguishable from an ordinary tree, yet the tree is feared as charged with spirit, and careless felling could bring misfortune. Toriyama Sekien’s Gazu Hyakki Yagyo illustrates this under the title Mokumi, explaining that a god appears in a tree more than a hundred years old and drawing aged human figures beside an ancient trunk. Written as 木霊, 木魂, 木魅, or 谺, kodama sits at the meeting point of tree soul and echo: the forest speaks back, and the tree is imagined as the one answering.

A nocturnal mischief-maker that appears in bedrooms to flip pillows or switch a sleeper’s head and feet. Most records date from the Edo period onward. Its form varies—sometimes a child, a monk, or left undefined. In Toriyama Sekien’s Gazu Hyakki Yagyō it resembles a small guardian-statue figure. Having one’s pillow reversed was once feared as a sign of disorder between body and soul, linked to illness or death.

A yokai appearing as a shaven-headed boy with a single large eye in the center of his forehead. More prankster than predator, it startles people by popping up suddenly and is often portrayed with humor. A folk pun led to the belief it dislikes beans, which later shifted into depictions of it favoring tofu. It appears in Edo-period picture scrolls and essays, and is often encountered outdoors or by the roadside.

A towering monk-like apparition that appears on night roads, at the end of slopes, crossroads, stone bridges, or atop trees. The more you look up at it, the larger it grows, terrifying those who give in to fear. Common countermeasures include saying “I’ve seen through you” or calmly looking down at it. Its true nature varies by region and may be a shapeshifted tanuki, fox, weasel, or badger. It is a well-known type found in Edo-period ghost tales and essays.

Ōnyūdō is a giant, priest-like apparition—and sometimes a towering shadow figure—reported across Japan. The name means “great monk,” yet it does not always appear in clerical form; accounts describe colossal humanoids or amorphous shadows looming overhead. Its glare is said to make onlookers faint or fall ill. While its true nature is often left unstated, some traditions claim it is a transformed animal—fox, tanuki, weasel, or otter—or even a bewitched stone stupa.

A yokai that washes red beans at streams late at night, echoing with shoki-shoki or zaku-zaku sounds. It appears near human settlements, blending into the sound of running water. Descriptions vary: a small, wizened elder or, at times, a child. Rather than direct attacks, it deceives with its presence, luring people into slipping. It appears in Edo-period strange tales and picture scrolls, with some accounts noting its habit of counting beans with exactness.

Betobeto-san is a night-road yokai that never reveals its form, accompanying people from behind solely through the sound of footsteps. Widely known primarily around Uda District in Nara Prefecture, it is said that while walking down a dark road, one might hear wet, smacking footsteps—"beto-beto" or "peta-peta"—trailing behind them, yet turning around reveals no one. The terror it induces does not stem from a grotesque appearance, but from the fact that the distance of the footsteps never changes. Neither catching up nor falling behind, the footsteps perfectly match the person's stride, forcing the walker to carry an invisible companion on their back. Rather than a yokai that inflicts harm, Betobeto-san is an anomaly of the boundary that can be safely passed by showing courtesy to the unseen. It is said that if one calls out, "Betobeto-san, please go ahead" (Betobeto-san, osaki e okoshi) and yields the path, the footsteps will move to the front and eventually disappear. This etiquette demonstrates the folkloric wisdom of not eliminating fear through force, but acknowledging the other's existence and yielding the right of way. While Shigeru Mizuki's illustrations gave it a round, friendly appearance, the original Betobeto-san is a formless presence born from the sounds of night roads, wet soil, and the emptiness behind one's back. There is a vast distance between this yokai's visualized modern character form and the formless folkloric experience it originated from. Though it gained a small body in pictures, the core of the legend remains the footsteps approaching from behind. Therefore, to truly understand Betobeto-san, rather than looking for its figure, one must imagine the sensation of gaining an extra set of walking sounds on a dark, lonely road.

The *Tofu-kozo* (Tofu Boy) is a *yokai* that appears on rainy evenings in the guise of a child wearing a large sedge hat, holding a tray with a block of tofu stamped with a maple leaf design. However, it neither attacks nor bewitches people; it simply stands there holding the tofu. This un-*yokai*-like, goofy charm is its main feature, making it beloved by the people of the late Edo period. What is noteworthy is that its origin does not lie in ancient folklore, but in the publishing culture of Edo itself. During the Anei era (1770s), it suddenly appeared as a character in illustrated entertainment books such as *kibyoshi* and *kusazoshi*. Its first appearance is said to be in the *kibyoshi* *Yokai Shiuchi Hyobanki*. Yokai researchers such as Natsuhiko Kyogoku and Katsumi Tada position the Tofu-kozo as an early example of a 'character yokai' artificially created as a commercial product. In other words, the Tofu-kozo is not a monster that crawled out of the darkness of the countryside, but an Edo-born yokai spawned by the urban industry of publishing.

A yokai said to appear at funerals, funeral processions, and graveyards to snatch coffins and corpses. In the early modern period it was told as a hellish jailer or thunder god’s doing, stealing bodies amid black clouds and lightning. Later it merged with bakeneko lore, spreading the belief that an aged cat becomes a kasha and preys on the dead. Reports occur nationwide and are not strictly framed as moral retribution. Traditional countermeasures include blades, prayer beads, mounded earth, and constant vigil.

Funayūrei are maritime apparitions formed from the spirits of people who died by drowning or shipwreck. Depending on the region, they may appear as ghosts, phantom boats, eerie lights, or dark figures resembling Umibōzu. They most often emerge on stormy or fogbound nights, when they try to sink a vessel by ladling seawater aboard or confuse its course until it runs aground. Local defenses include offering a ladle with its bottom removed, throwing rice balls or ash, or meeting the ghosts with an unwavering stare. Mōjabune, Bōko, and Ayakashi are among the names applied to such spirits. Toriyama Sekien also depicted Funayūrei in Konjaku Gazu Zoku Hyakki.

Ittan-Momen is a strange, long cotton-like presence associated with the Ōsumi Takayama region, around present-day Takayama in Kimotsuki Town, Kagoshima Prefecture. In 1938, Kunio Yanagita recorded that something in the form of an Ittan-Momen fluttered at night and attacked people. No color, face, limbs, or voice is given; what remains is the vivid sense of something long moving through the dark. A 1942 dialect collection calls “Ittan-Monmen” a kind of monster and describes it as a cotton-like object about one tan in length that attacks people at night. A tan measures a bolt of cloth, but its dimensions have varied by period, place, and textile; it cannot be reduced to one fixed number of meters. The name evokes a length of cloth long enough to cover a body, flickering like a living thing. Later local materials tell of Ittan-Momen flying in at dusk and winding around a person’s head or neck. Interviews conducted in Kimotsuki Town preserve accounts from Ikenosono, Hami, Gongen-yama, and the banks of the Kimotsuki River, while also noting communities where the story was unknown. This was not one uniform tale across all of Kagoshima, but a presence remembered unevenly in particular parts of Ōsumi. The figure now familiar throughout Japan owes much to Shigeru Mizuki. According to an account published by the Agency for Cultural Affairs, Mizuki gave distinctive designs to yokai named in *Yōkai Meii* whose appearances had not been handed down. Ittan-Momen, too, acquired the recognizable body of a long flying cloth and became known nationwide through manga and animation.

The Konaki-jiji (Child-crying Old Man) is a yokai originating from the mountainous regions of Miyoshi District, Tokushima Prefecture (specifically the former Sanyo Village, now part of Miyoshi City). According to legend, despite possessing the appearance of an old man, he wanders mountain paths emitting the crying sounds of a human infant. His method of attack relies on exploiting human empathy: when a passerby pities him and picks him up to comfort him, his weight steadily increases until the victim is crushed to death. Kunio Yanagita included this legend in his foundational text *Yokai Dangi* (Discussions on Yokai, 1956), linking him to a broader family of baby-crying anomalies distributed across Shikoku, such as the "Gogya-naki." Yanagita pointed out that the Konaki-jiji's trait of "becoming heavier when carried" is shared by other pregnancy and infant-related yokai nationwide, such as the *Obariyon* and the *Ubume*, suggesting that the legend is a composite of different mythological strains created by later generations. Since 1968, he gained nationwide fame as a regular supporting character in Shigeru Mizuki's manga *GeGeGe no Kitaro*, solidifying his position as one of modern Japan's most beloved local yokai.

The Sunakake-baba (Sand-throwing Hag) is a yokai originating from local legends in Nara Prefecture (the Yamato region), Hyogo Prefecture (Amagasaki and Nishinomiya), and Shiga Prefecture. According to folklore, when people walk near shrine groves or bamboo thickets, sand is suddenly thrown at them from above to frighten them. In classical legends, she is an invisible entity recognized solely by the sound and sensation of falling sand, never revealing her true form. Before WWII, local historian and doctor Shirosaku Sawada recorded her legend in his book *Yamato Mukashibanashi* (Tales of Yamato). The great folklorist Kunio Yanagita later included this account in his seminal work *Yokai Dangi* (Discussions on Yokai, 1956), which brought the Sunakake-baba to the attention of yokai researchers nationwide. Her fame exploded across Japan in 1968 when Shigeru Mizuki featured her as a regular supporting character in his legendary manga *GeGeGe no Kitaro*. In the manga, she was given the visual form of an old woman in a kimono with a piercing gaze, serving as a wise elder of the "Kitaro Family," cementing her status as one of modern Japan's most beloved yokai.

A yokai famed as an invisible wall that blocks travelers on night roads. People suddenly find they can’t move forward, their hands meeting a flat, unyielding surface. The spell is said to break if one waits, sidesteps, or taps the ground with a cane. Its form is unfixed—often described as unseen or like a featureless wall. It rarely harms beyond causing confusion, feared mainly as a nuisance that makes people lose their way.

Hakutaku is an auspicious beast from ancient Chinese lore said to understand human speech and to know all manner of monsters, demons, and calamities. It appears in eras of virtuous rulership, and the famed Hakutaku Chart records creatures of anomaly and methods to counter them. In Japan, such images spread in the Edo period as talismans against misfortune, carried for safe travel and protection from illness. Depictions show a white beast, with features varying by period.

A beastlike yokai feared for plummeting from storm clouds with thunder, racing wildly through trees and fields. Its fur bristles and claws are sharp; in some regions, split bark and scorch marks from lightning strikes were taken as its traces. If it falls near people, they may be stunned and left dazed. When the storm subsides it vanishes and ascends back to the heavens. Accounts vary: it is said to resemble a fox or tanuki, and to be about the size of a weasel.

Kudan is a half-human, half-cow prophetic creature that spread widely in the late Edo period. It has a human face on a bovine body and is said to appear, deliver prophecies about public affairs or harvests, and soon die. Broadsheets and printed books from the Tenpō era record varying locations and appearances. Some notices claimed that displaying its image brought protection from calamity and prosperity at home, though accounts differ by region and source. The supposed link to the legal phrase ‘ken no gotoshi’ (“as stated above”) is considered a folk etymology.

Shiranui is a mysterious light said to appear off the coast of Kyūshū, especially over the Yatsushiro and Ariake seas. On a calm night around the first day of the eighth lunar month, one or two 'parent fires' kindle offshore. They divide to either side and multiply until hundreds or thousands of lights stretch in a horizontal line. The display is difficult to see close to sea level but clear from higher ground, and the lights are said to recede when approached. Also called Thousand Lanterns or Dragon Lanterns, Shiranui was feared as a sign that fishers should not put to sea. It is now generally explained as an atmospheric optical phenomenon related to mirage formation.

Hitodama are small, floating balls of light seen at night, long interpreted as souls that have left the human body. Reports describe bluish-white, orange, or red hues, often trailing a tail and drifting low to the ground. While often confused with onibi or kitsunebi, hitodama specifically denote the luminous manifestation of a human soul and are linked to death and liminal moments. They appear frequently in classical literature, early modern essays, and regional lore, with sightings continuing into modern times.

Amabie is a prophetic yokai said to have appeared in the sea off Higo Province in mid-April 1846. Its only known contemporary source is a single kawaraban held by Kyoto University Library; no parallel account from the period has been confirmed. According to the sheet, something shone in the sea night after night. When an official went to investigate, a creature appeared and announced, 'I am Amabie, a being who lives in the sea.' It foretold six years of abundant harvests across the provinces, together with an epidemic, and instructed people to copy its form and show it to others at once before disappearing beneath the water. The text describes its appearance only as 'like the picture.' In the accompanying image it has long hair, a beak, scales, and three leg- or fin-like appendages.

Kuchisake-onna (Slit-Mouthed Woman) is a representative modern urban legend of post-war Japan that originated in Gifu Prefecture between 1978 and 1979 and spread nationwide. The typical pattern involves a beautiful woman covering her mouth with a mask who stops children on the street at night and asks, "Am I pretty?" Depending on the answer, she removes her mask to reveal a mouth slit from ear to ear, asking again, "Even like this?"—if denied, she attacks with scissors or a carving knife. It is said to have first appeared in the "Editor's Notes" column of the Gifu Nichinichi Shimbun on January 26, 1979, and from March 1979, national magazines such as Shukan Asahi, Shukan Shincho, Shukan Josei, and Josei Jishin featured it one after another. It reached its peak in June of the same year when the June 29 issue of Shukan Asahi published a large feature by Etsuro Hiraizumi titled "The Bizarre Rumor of the 'Slit-Mouthed Woman' Terrifying Elementary and Junior High School Students Nationwide". In Himeji City, Hyogo Prefecture, a copycat dressed as Kuchisake-onna was arrested for violating the Swords and Firearms Control Law; in Koriyama City, Fukushima Prefecture, and Hiratsuka City, Kanagawa Prefecture, police cars were dispatched; and in Kushiro City, Hokkaido, and Niiza City, Saitama Prefecture, students were made to go home in groups. The rumor triggered real-world social responses. This is a rare case that embodies the yokai genesis of the mass media age, conquering the country in half a year through the linkage of cram schools and national magazines, rather than being picked up from simple beliefs or local lore of the Edo period. Since Toru Joko's "School Ghost Stories" academically organized it in 1990, it has been continuously read as a representative case study of modern yokai and urban legends.

At the edge of a schoolyard after classes, something with only half a body comes into view. It seemed far away, but in the next moment the sound of it striking the ground is close at hand. Teketeke is a modern school ghost story in which a body that is only an upper or lower half moves through schoolyards and school buildings, pursuing people. The image now most associated with Teketeke is a young woman who lost her lower body in a train accident and advances on her arms or elbows. Yet when Chiaki Konaka, who wrote the 1994 television drama *Yōkai Teketeke*, read school-ghost-story books from around 1993–94 while preparing it, they included both upper and lower halves that ran; they were often old women, and had no origin story. Before any biography of a single accident victim, there was a compact, easy-to-perform scene: half a body moving with an uncanny sound and speed. The name Teketeke is often explained as the sound of a body or arms striking a floor or the ground as it moves. Related names include Kagoshima's Patapata-san, Shiga's Kotokoto-san, Kanagawa's Katakata, and such names as Hijikake Babā, Hijiko-san, and Hijikake Onna. Stories in which part of a body moves with a repeating sound appear to have gathered under the name Teketeke through 1990s publishing and screen media. Its gender, age, missing half, place of appearance, speed, and manner of harm therefore vary with the school and generation telling the story. The name Teketeke becomes clearly visible in publications around 1993–94. Hints of an earlier presence survive in later recollections. A contribution submitted in 2004 recalled hearing a similar story in Okinawa around 1980, while a form passed from a teacher to students at one high school may reach back to the late 1980s or early 1990s. These accounts do not converge on a single station or accident. Half-bodied figures remembered in many places eventually came to be called by the same repeated sound. Local tellings are freer than the image familiar from film. In an account reported from Kobe Municipal Rokko Island High School in 2001, meeting Teketeke-san's gaze in a mirror brings pursuit. In a high-school account discussed in oral-literature research from 2022, Teketeke is a man's upper body, violently spinning its hands and neck, while pursuing people at the same speed as a human. Such contradictions are not errors; they are also part of the craft of school ghost stories, where a teller's voice, sound effects, and gestures produce fear and laughter at once. A backstory involving a young woman killed in a train accident was eventually overlaid on the half-bodied figure. Other additions included death within three days or 72 hours of an encounter, escape through a correct answer, and cutting with a sickle or saw. In particular, the rules that it comes to someone who has heard the tale within three days and poses a question are strongly associated with Kashima-san stories. Through their related images of a half body and railways, the two ghost stories exchanged names and rules. Koji Shiraishi's 2009 film *Teketeke* combined a postwar railway suicide in Kakogawa, Kashima Reiko, and death 72 hours after an encounter into a single origin narrative. The film's striking image of a woman strongly shaped what later came to feel characteristic of Teketeke. Beneath that image, however, the simple scene still moves: half a body chasing someone with a sound that seems to speak its name. Each move into a classroom, mirror, corridor, railway, film, or game gives that half body a new form and new rules.

At the beginning of spring break, an unintelligible humanlike sound comes from a farm garden. After a sound wavering between po and bo, a hat passes above a hedge about two meters high, and a woman in a pale dress appears through a gap, her head higher than the hedge. Hachishakusama is one of modern Japan's best-known internet ghost stories, beginning when familiar proportions suddenly cease to make sense. When the narrator tells his grandparents, their manner changes at once. His grandmother says that the Hachishakusama in their district is, as her name implies, about eight shaku tall. She may look to different witnesses like a young woman in mourning clothes, an old woman in a formal kimono, or a middle-aged woman in work clothes. What remains constant is a female form, abnormal height, something worn on the head, and an uncanny laugh like a man's voice. Under the modern standard of measurement, one shaku is ten thirty-thirds of a meter, so eight shaku is about 2.424 meters. The text leaves the hat's color and shape, hair, and face undescribed, making room for diverse later imagery. The setting is a district about the size of an ōaza, with its city and former-village names withheld. Four Jizō statues stand at the village boundaries in the cardinal directions, blocking Hachishakusama's routes. The narrator spends the night from sunset until 7:00 the next morning in an upstairs room protected by paper talismans, sealed windows, salt at the four corners, a small Buddhist image, and prayer. In the night, a voice nearly identical to his grandfather's calls outside the door as something lightly taps the window. The next morning he sits at the center of a nine-seat vehicle, surrounded in eight directions by seven distantly related men and K in the front passenger seat; her prayers and vehicles before and behind carry him beyond the district. Ten years later, a call says that the Jizō on the road to his home has been broken, leaving the fear that the voice may return. The earliest verifiable starting point is posts 908 through 916 of "Shall We Collect Stories So Scary They Are No Laughing Matter? 196," posted to the Occult Board of the anonymous forum 2channel on August 26, 2008. The same anonymous user made nine consecutive posts in roughly nine minutes, from 9:45:56 to 9:54:54 a.m. The thread welcomed personal accounts and fiction alike, and no independent source is known to substantiate a real place or event. Hachishakusama is internet lore born from the union of a story shaped like an old memory of the land and the rapid, consecutive-post form of an anonymous message board. By September 22, 2008, less than a month after the post, it had been reposted under the title "Hachishakusama" on a Sharekowa compilation site. It later became a subject of folklore and narrative research, while the video anthology *Fūin Eizō 16: Hachishakusama no Noroi* and the novel *Otherside Picnic* and its anime adaptation gave it a voice, face, clothing, and movement through new storytellers. Its cultural history lies in the way an apparition that began without an official illustration grew as it passed from bodies that read, to bodies that listened, to bodies that watched.

Kunekune is a white, humanoid apparition appearing in rural landscapes, originating from early 2000s internet urban legends. Seen during the daytime in midsummer, it is witnessed in the distant background of rice paddies, riverbanks, or beaches, standing tall and writhing its body from side to side like a thin white paper doll. Its most prominent feature is a cognitive-based horror structure: "It is harmless when viewed from afar, but attempting to understand its true identity using binoculars or the like will cause insanity." It is known that a fictional story posted on a ghost story submission site in 2000 lost its "fiction disclaimer" when it was reposted to the 2ch occult board in 2003, subsequently circulating independently as a true experience. It is one of the representative examples of an internet-born "forum-posted ghost story" and is a symbolic entity of the early 2000s 2ch ghost story boom that predates Hachishakusama (2008).