Hyakume

Region/Culture: Japan
Mythos: Japanese Mythology
Primary Type/Nature: Monsters and Beasts
Mythical Attributes: A fleshy, roughly man-sized yokai whose entire body is studded with a hundred blinking eyes that watch in every direction at once.
Role in Mythos: A nocturnal guardian of abandoned temples and shady ruins that keeps watch for thieves and can detach a single eye to spy on anyone who comes too close.
Relation to Humans: Hyakume are shy and try to avoid people, but they defend the buildings they haunt by fixing an intruder with their gaze. They are not truly violent, relying on their unsettling size and appearance to frighten trespassers away rather than harm them.

A thief who has done his homework waits for the darkest part of the night, when the moon is down and the temple is only a black shape against a blacker hill. He works the outer door, steps onto boards that give a little under his weight, and stands still to let his eyes adjust. They never quite do. In the far corner, where he had taken the deeper shadow for a heap of dropped cloth or a sack left to rot, something opens. Not one eye. A hundred of them, yellow and wet and blinking out of time with one another, all rolling at once toward the man who was so sure the room was empty.

The hyakume is a creature built almost entirely of eyes. From the crown of its roughly human-sized body down to the soles of its feet, its flesh is packed with them, each one lidded, each able to blink and swivel and fix on a target on its own. Between the eyes the skin is soft and pink, the bloodless color of a thing that has never stood in daylight. When every eye closes at once the whole creature slumps into an anonymous mound of meat, and in that state it is nearly impossible to tell from its cousin the nuppeppo, the faceless blob of flesh that squats in the same ruined halls. Open, there is no confusing the two. The hundred eyes give it away.

Where it came from, the old accounts do not really say. It belongs to the crowded bestiary of the Edo period, the age when Japanese artists and storytellers finally set the country’s spirits down in illustrated scrolls and gave firm shape to things that had until then been only rumor passed along in the dark. The hyakume arrives in that tradition already whole, a night-thing of empty buildings, and its name states its nature without any ceremony at all. A hundred eyes. Some tellings bind it tightly to the nuppeppo and treat the pair as two versions of a single idea, the discarded flesh of a temple given just enough life to watch the door. Others let it stand on its own.

Its work is watching. The hyakume makes its home in temples and shrines that people have stopped tending, in old houses and caves and the shaded corners humans have learned to keep away from, and there it holds a kind of post. Daylight is unbearable to it. A hundred eyes with no lids thick enough to shut out the sun mean the creature spends the bright hours crushed into the deepest black it can find, stirring only in the small hours to take up its watch. It is a caretaker for buildings that have lost their caretakers. Through the long night it does little more than sit and see, every angle of the room covered at once, nothing crossing the floor without being counted.

The trouble starts when someone draws near. The hyakume is shy and would far rather not be noticed, but let a person come within a few paces and it defends its ground in one of the strangest ways in all of Japanese folklore. A single eye detaches. It lifts free of the body under its own power, drifts across the dark, and fastens onto the intruder, riding on a shoulder or the nape of the neck, and there it clings for as long as the person stays inside the walls. The eye is not a wound and not quite a curse. It is surveillance. It waits to learn whether the visitor means any harm.

That is the whole of its strength, and it disturbs more than any set of claws would. The hyakume sees in every direction without so much as turning, loses track of nothing that moves, and can send a scrap of its own sight out into the world to shadow a suspect. Startled or cornered, it heaves itself up out of the black and lunges, flinging its bulk and its terrible studded face at the trespasser to drive them out. It seldom needs to do even that much. The look of the thing is usually enough.

But the flesh that makes it a flawless sentry makes it a feeble monster. It is not fast, not armed, not really dangerous at all. It cannot bear light, which chains it to the dark and gives the daylight world over completely to anyone who would trouble it. Its menace is bluff, almost pure fear, and a person who keeps their nerve walks away unharmed. Even the borrowed eye lets go on its own schedule. Step back out through the temple gate, put the ruined place behind you, and once the hyakume judges the danger past, the eye peels away and flies home, and the hundred lids fall shut, and the black room settles back into looking empty. The thief who runs is never chased. He is only watched, patiently, until he is gone.

Frequently Asked Questions

What is the Hyakume in Japanese folklore?

The Hyakume is a Japanese yokai whose name means “hundred eyes,” a roughly man-sized creature of soft pale flesh covered from head to foot in countless blinking yellow eyes. It lives in abandoned temples and other dark, neglected places, where it acts as a nocturnal guardian against intruders. With its eyes shut it looks like a featureless lump of flesh, almost identical to the yokai called nuppeppo.

What does a Hyakume do to intruders?

When a person comes within a few paces of a Hyakume, one of its eyes detaches from its body and flies over to stick onto the intruder. The eye rides on the person’s shoulder or neck and keeps watch on them for as long as they remain in the building. Once the Hyakume senses no threat, the eye lets go and returns to its body.

Is the Hyakume dangerous?

The Hyakume is considered low risk and is not truly violent. It is shy and avoids humans, and when frightened it lunges out of the shadows to scare trespassers away rather than to hurt them. It relies almost entirely on its size and its unnerving hundred-eyed appearance, so a person who stays calm and leaves is rarely harmed.

Where does the Hyakume live and why does it only appear at night?

The Hyakume makes its home in abandoned temples, old houses, caves, and other shadowy places that people tend to avoid. It only comes out at night because its many lidless eyes are too sensitive for daylight, so it spends the bright hours hidden in the deepest dark it can find. There it guards the ruined buildings it inhabits from would-be thieves.