Leave a bathtub unscrubbed in old Edo and, by tradition, you weren't just inviting mildew. You were inviting the akaname — a small yokai whose entire existence is built around one job: slipping into a filthy bath after dark and licking the scum clean with a long, wet tongue. Its name is the job description. 垢 (aka) is the grime and body-soil that collects in a tub or drain; 嘗 (name) means "to lick." Put together, it is simply the grime licker.
What does it look like?
Toriyama Sekien drew the akaname in his 1776 picture book Gazu Hyakki Yagyō ("The Illustrated Night Parade of a Hundred Demons") as a small, unkempt figure crouched at the edge of a bath, tongue extended toward the standing water. It's usually described as child-sized, with wild, matted hair, grubby skin, and long claw-like fingers. Later books sometimes make it red, a pun on aka — a creature that looks exactly like something that has been living in the damp, unclean corners of a bathhouse. There's no armor of scales or shell here, no dramatic silhouette; it's built to be small enough to fit into the parts of a bath a person would rather not think about.
A job nobody else wants
The akaname's behavior is almost entirely captured by its name. The oldest account, from 1686, says it lives in ruined bathhouses. Modern yokai books add that it comes at night, while people sleep, and licks the residue left behind in the tub, along the floor, or around the drain — the soap scum, the skin oil, the general grime of a bath used all day and cleaned by nobody. It doesn't attack, curse, or steal anything. It isn't drawn to wealth or beauty, only to filth.
That narrow appetite is what makes it memorable. Most yokai stand in for a danger — drowning, getting lost on a mountain path, a fever no one can explain. The akaname stands in for a chore.
No monster to fight
Unlike river spirits or mountain ogres, the akaname comes with no charm, prayer, or trick to ward it off, because Edo-period tellers didn't really need one. The folklore does the persuading on its own: keep the bath clean, and there is nothing here to lick. Leave it dirty, and something will notice. The threat is less "monster in the dark" and more "someone — or something — is watching how well you keep house," which made the akaname a useful bit of moral pressure to pass on to children too young to be lectured about hygiene directly.
In a later book, Hyakki Tsurezure Bukuro (1784), Sekien drew a close cousin: the tenjōname, or "ceiling licker." Modern books say it leaves the dark stains on the ceilings of old houses and temples. Between the two, Edo-period Japan had a yokai for nearly every surface a household failed to keep spotless.
Where it comes from
The akaname belongs to a distinct strain of Edo yokai lore: creatures invented not from a frightening natural event but from an everyday domestic irritation, given a face in the hyakki yagyō ("night parade of a hundred demons") picture tradition. Public bathhouses, or sentō, were central to daily life in Edo-period cities, where most homes had no bath of their own. A shared tub that wasn't scrubbed regularly was a real, unglamorous problem — and the akaname turned that problem into a character, one Sekien could sketch and caption alongside far more fearsome company in his bestiary of yokai.
The akaname is older than Sekien's picture. Yamaoka Genrin's Kokon Hyakumonogatari Hyōban (1686) already names an "akaneburi" that lives in old bathhouses. It says the creature is born from the filth that builds up there. Sekien gave that idea its best-known face ninety years later.
See the original print
Toriyama Sekien drew Akaname in Gazu Hyakki Yagyō (1776). This book has that picture, with its caption in English.
- Japandemonium Illustrated: The Yokai Encyclopedias of Toriyama Sekien →trans. Hiroko Yoda & Matt AltThe complete Edo-period bestiaries that so many of these entries trace back to, in full English translation.
- The Book of Yokai →Michael Dylan FosterThe most readable scholarly introduction to yokai — where they come from, what they mean, and the major creatures.
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The 1686 book says grime gives birth to it
Kokon Hyakumonogatari Hyōban is not a plain story collection. It is a book of questions and answers about strange things. Guests at a ghost-story night ask, and the scholar Genrin explains. Genrin's son finished the book and published it in 1686, after Genrin's death.
In the chapter on the akaneburi, a guest describes it. It is a monster that lives in old bathhouses, the guest says. It may also hide in ruined mansions. Then the guest asks why it has such a name.
The answer is a small theory of nature. Dust and grime give off a kind of energy, called ki (気). Where that energy gathers, a creature can take shape out of it. A fish is born in water and drinks water. A louse is born in dirt and feeds on dirt. The akaneburi works the same way. It is born from grime, so it eats grime.
So the oldest source does not call it a punishment. It is simply what filth turns into.
Sekien never explained the picture
Sekien's 1776 page gives only the name and the picture. There is no caption telling us what the creature does. So nobody can be fully sure what Sekien had in mind. The yokai writer Murakami Kenji, in his Yōkai Jiten (2000), says Sekien most likely drew the akaneburi from the 1686 book.
Sekien's figure is a child with a bobbed haircut. It has claws on its feet. It stands beside the bath and sticks out a long tongue. Almost everything we "know" about the akaname comes from joining this silent picture to the older text.
A 1780 book made it lick people to the bone
Four years after Sekien, the creature turned up in a very different book. The Nittō Honzō Zusan (1780) is an Edo-period natural-history book. Volume 12 has an illustrated entry on the akaneburi. The drawing shows an old woman soaking in a wooden tub. Beside her, a white creature crouches on all fours with its tongue hanging out.
The text says the akaneburi looks like a baby. It has round eyes and a long tongue. Then the book adds a much darker version.
Sometimes, it says, the creature appears as a beautiful woman. It licks away a person's blood and flesh. Only the bones are left. The book tells of a man who kept visiting a hot spring in Banshū, in today's Hyōgo. He met this fate and died, nothing left of him but bone.
In this source, the grime licker is truly dangerous. Modern books chose the harmless version instead.
Later artists kept changing its look. In Utagawa Yoshikazu's yokai board game Hyakushu Kaidan Yōbutsu Sugoroku (1858), it has creepy blue-black skin.
"Aka" can also mean a dirty heart
In Japanese, aka is not only dirt from the body. In a bathroom it can also mean mold and hard-water stains. All of that counts as the akaname's food.
But aka has a second meaning. It can mean a stain on the heart, such as greed or worldly desire (bonnō, 煩悩). Some modern yokai writers read a lesson in this. Do not let so much impurity build up inside you that you forget to clean your bath.
This is a modern reading. The Edo books do not state it as a rule.
Akaname today
The akaname never became a bogeyman worth building shrines to placate, and unlike the kappa or the oni it has no cucumber, no dish of water, no sumo trick attached to it. Its afterlife is a quieter one: it's one of the hundreds of yokai preserved because Shigeru Mizuki, working centuries after Sekien, spent much of his career compiling exhaustive illustrated encyclopedias of Japanese yokai — reference works that kept minor figures like the akaname documented and searchable rather than forgotten in an old woodblock-printed book. It surfaces today mostly in that context: yokai dictionaries, folklore art books, and the steady modern interest in Sekien's original catalog, where it sits a few pages away from far more famous names, waiting in the corner of the bath.
Quick answers
Is the akaname dangerous? Usually not. Modern yokai books say it only licks grime. The exception is the Nittō Honzō Zusan (1780), where it can appear as a woman and lick a man to the bone.
Is the akaname the same as the akaneburi? Yes. Akaneburi is the older name, used in 1686 and 1780. Both names mean "grime licker."
Why is the akaname sometimes red? Its name starts with aka, which sounds like the word for red (赤). Some modern writers, such as Iwai Hiromi, say it has a red face because of this pun. Others make its whole body red.
Where can I see an akaname today? A bronze akaname statue stands on Mizuki Shigeru Road in Sakaiminato, Tottori. The street is lined with over 100 yokai statues based on Mizuki's drawings.
