Yokai & Kami Sagas
Reading Japanese yokai and kami through lineages, pantheons, and classic sets
Mythology & Deities
(5)
Kiki Sidestream Saga · From Heavenly Descent to Jimmu's Ancestors
After the heavenly grandson Ninigi descended to Hyuga Takachiho, his marriage with the two daughters of Ōyamatsumi (the god of mountains)—Konohana-sakuyahime and Iwanaga-hime, tied to the myth of human mortality's origin—led to the birth of Yamasachihiko (Hoori) and Umisachihiko (Hoderi) through fire-trial childbirth, the brotherly conflict between them, and Yamasachihiko's underwater marriage with Toyotama-hime, daughter of the sea god, culminating in the broken 'do-not-look' taboo. This cluster bundles the seven deities forming the grandparents and great-grandparents of the first Emperor Jimmu, structuring the 'imperial-lineage genesis layer' that bridges the first half of Kiki mythology (creation, land-yielding) and the second half (Jimmu's eastern expedition).

Seven Lucky Gods (Shichi-Fukujin)
Formed in the late Muromachi period, when the Zen monks and painter-monks of the Higashiyama cultural circle bundled together seven deities of fortune: the locally enshrined Ebisu, the Indian-derived Daikoku, Bishamonten, and Benzaiten, and the continental newcomers Fukurokuju, Jurojin, and Hotei. The set's distinctive feature is that it gathers under one frame deities of utterly different origins ── a local fishing-and-commerce god, three deities transmitted via Buddhism from India, two Daoist astral personifications, and a Chan/Zen-monk turned bodhisattva-incarnation. Through Edo-period treasure-ship prints, first-dream prints, and the Seven Lucky Gods pilgrimages, this group became one of the most pervasive folk religious practices in Japan, and is still widely observed across the Kanto and Kansai regions during the New Year season.

四神
天の二十八宿を四方に配し、東西南北を守護する四つの霊獣。青竜(東・木)・朱雀(南・火)・白虎(西・金)・玄武(北・水)からなり、中国の星宿・五行思想に発して古代日本へ受容された。飛鳥のキトラ古墳壁画に四方すべて揃う。

御霊信仰の系譜
非業に倒れた高貴な魂が祟りをなし、やがて神として祀られて鎮められる ── 古代以来の御霊信仰の連なり。廃太子早良親王(崇道天皇)を起点に、天神菅原道真、新皇平将門、そして崇徳上皇へ。日本三大怨霊もこの系譜のうちにある。
Famous Trios & Classics
(5)
The Three Great Evil Yokai of Japan
Tamamo-no-Mae, Shuten-dōji, and Emperor Sutoku. The three most renowned great yokai of Japan, who threatened the throne and the capital and were dreaded for ages after. They stand together not by rank but by the awe each struck into a whole realm.

The Three Great Vengeful Spirits of Japan
Sugawara no Michizane, Taira no Masakado, and Emperor Sutoku. The three most dreaded vengeful spirits of Japan, who turned to wrath through false accusation or violent death and shook the throne and the capital. They stand together not by rank, but by the scale of the curse with which each rocked an age.

日本三大幽霊
近世怪談が生んだ、もっとも名高い三人の幽霊。顔崩れて夫に祟る四谷怪談のお岩、井戸で皿を数える皿屋敷のお菊、牡丹灯籠を提げ恋うて通う牡丹灯籠のお露 ── 歌舞伎・落語・講談で繰り返し語られた、日本の幽霊像の原型。

日本三大化け狸
俗に言う日本三大狸伝説 ── 館林・茂林寺の分福茶釜、松山の八百八狸(隠神刑部)、木更津・證誠寺の狸囃子。佐渡の団三郎狸も並べ、化けと腹鼓で人を化かし、また土地を護った大狸たちが集う。

八大天狗
諸国の霊山に座す八座の大天狗。室町期の謡曲『鞍馬天狗』に既にその名が列ね、近世の『天狗経』四十八天狗の筆頭をなす。愛宕太郎坊を総帥とし、西は讃岐白峰までを束ねる。
Animal Transformations & Lineages
(4)
The Four Ranks of Foxes
The four grades of fox spirits set down in Edo-period essays — the higher the rank, the further from humankind and the nearer the divine.

猫の妖怪の位階
年を経た猫が妖力を増し、姿と格を変えてゆく階梯。化けはじめの化け猫から、尾の裂けた猫又、そして葬列の死体を奪う火車へ。五徳猫・猫娘はその縁に連なる眷属。火車を最上位とするのは一説。

The Incarnations of Tamamo-no-Mae
A fox that split its tail into nine became a peerless beauty, and at last a stone that takes the lives of all who draw near. A single lineage traced by a fox-spirit from China through its incarnations and rebirths.

The Kappa Kindred
The kappa of watersides across Japan and its kin. They are bound not by rank but by local names and by the seasonal passage between river and mountain.
Strange Fires & Forms
(5)
怪火・火の妖怪
夜の野山や海辺、墓場や軒先に灯る、由来さまざまな怪火の群れ。油を盗んだ姥の火、雨夜の蓑にともる火、海上に並ぶ不知火、そして死者の魂たる人魂まで ── 鳥山石燕らが描き集めた、火をめぐる畏れの図譜。

目の妖怪
無数の、あるいは異形の目をもつ妖怪たち。腕に百の鳥目が生じた百々目鬼、掌に目を開く手の目、古障子にひしめく目目連、そして一つ目の小僧 ── 「見る」ことの畏れが生んだ異形の系譜。

車輪の怪
夜の辻を轟と転がる、車輪の妖怪たち。憤怒の男面を乗せた輪入道、女を乗せた片輪の牛車 ── 牛車の時代の都に生まれ、見た者・覗いた者を祟るとされた怪。

The Cloth Yokai
Cloth yokai that smother people in the dark. They split into two strands — tsukumogami born from aged rags, garments and bedding that gained a soul (Shirouneri, Kosode-no-te, Jatai, Boroboroton) and uncanny cloths of unknown provenance that drift down at night (Ittan-momen, Fusuma, Futon-kabuse) — joined by the single act of covering a face.

入道と坊主の怪
夜道や峠、空き寺に現れる坊主姿の怪たち。見上げるほど背が伸びる見越入道、巨躯の大入道、青き一つ目の青坊主 ── 僧形への畏れと、闇に膨れあがる影が結んだ群れ。
Regional & Local Groups
(4)
Spirits of the Nansei Islands
Spirits born of the Nansei Islands (Amami, Okinawa and the Ryukyu archipelago), whose climate, vegetation, and religious culture diverge sharply from those of mainland Japan. Tree spirits dwelling in ancient banyan groves (Kenmun, Kijimuna) and the islands-wide collective term for evil spirits (Majimun) are inseparable from the pre-Buddhist Southern-Island folk faith, the distinctively Ryukyuan worldview of sedi (spiritual power), and the religious ecology of yuta and noro mediums and utaki sacred groves. They are the heart of the island folklore long studied by pre-war Okinawan scholars such as Iha Fuyū, Orikuchi Shinobu, Kinjō Chōei, and Shimabukuro Genshichi.

雪の怪
吹雪の夜に山里を訪れる、雪そのものが化した精たち。白い着物の雪女を中心に、雪の童 雪童子、雪山の老翁 雪爺が連なる。来訪して命を奪い、また子を託す ── 雪国の畏れと慈しみが結んだ群れ。

海と舟の怪
沖をゆく舟を襲い、磯辺に立つ海上の怪異たち。柄杓を求める船幽霊、巨影の海坊主、髪長き磯女、琵琶を抱く海座頭、そして物忌みの夜に渡る海難法師 ── 海で死んだ者の念と、海そのものの畏れが結ぶ群れ。

The Seven Wonders of Honjō
A cluster of legendary mysteries told from the Edo period onward in Honjō, the southern part of present-day Sumida Ward, Tokyo. Although nominally seven, the oral tradition records at least nine episodes, with the actual roster shifting from era to era, narrator to narrator, and one printed sōshi to the next. Only Oitekebori (the put-it-down moat) and Kataha-no-ashi (the one-sided reed) are universally counted; the remaining five are drawn from Okuri-chōchin, Okuri-hyōshigi, Akarinashi-soba, Ashi-arai-yashiki, Ochiba-naki-shii, Tanuki-bayashi, and Tsugaru-no-taiko. Set in the low-lying east bank of the Sumida — a patchwork of warrior estates, merchant streets, and townsmen's quarters at the periphery of Edo proper — these tales became staples of late-Edo urban kaidan, recurring in rakugo, woodblock prints, kabuki, and the works that followed Toriyama Sekien's Gazu Hyakki Yagyō, and still inspire modern manga, anime, and games.
Historical & Heroic Tales
(1)Life, Death & the Netherworld
(2)
The Netherworld: Ten Kings and the River of Three Crossings
The major figures composing the medieval Japanese netherworld view—a syncretic blend of Buddhism, Daoism, and Shinto. The deceased undergoes judgments by ten kings at ten temporal nodes (the forty-nine-day period plus the 100th-day, first-anniversary, and third-anniversary memorials). At the River of Three Crossings, administered by the second king Shokō, Datsue-ba strips the deceased of clothing and Keneō hangs them on the Eryōju tree, weighing sin by the bough's sag—this is the preliminary judgment. The fifth king, Enma, presides over the central trial on the thirty-fifth day. He uses the Jōharikyō mirror to project the deceased's life as imagery, while Gushōjin, Shimyō, and Shiroku finalize the verdict with their records. This concept of posthumous ethics, karmic retribution, and the life-projecting mirror constitutes the deepest layer of Japanese views on life and death.

Ningyo and the Tales of Immortality
This cluster bundles the ningyo, which evolved through many layers from the earliest records in the Nihon Shoki (Suiko 27, 619 CE) in Ōmi and Settsu to the late-Edo Amabie lineage, with Yao-bikuni, who ate ningyo flesh and lived to 800. At its core stands the passive-immortality tale: 'A father brings home flesh from the otherworld; his daughter unwittingly eats it.' The cluster combines the ningyo's evolving form—from ill omen (ancient and medieval) to mummy fakes and Western-style beauty (Edo) to oracular prophet-beasts and the Amabie lineage (late Edo)—with the Wakasa Kūinji entombment cave and the 166 nationwide Yao-bikuni traditions. It is a rare narrative system in which Japanese folk culture independently developed the universal question: 'Is immortality a blessing or a curse?'



















































































































