The Bridge That Would Not Move: Tawara Tōda and the Hundred-Legged Terror of Mount Mikami

A Man Who Walked Where Even Serpents Feared to Stop

On the Seta no Karahashi, a bridge arching over the southern tip of Lake Biwa, a great serpent once lay stretched across the planks, unmoving. Travelers turned back. Merchants waited at the water’s edge, unwilling to test their luck against something so vast and so still. Then came a warrior named Fujiwara no Hidesato, better known by his nickname, Tawara Tōda — “Tōda of the Rice Bale.” He looked at the creature blocking his path, and instead of drawing his bow, he simply walked forward, stepping across its back as though it were no more than a fallen log.

That night, a woman appeared at his door. She was, she confessed, the serpent from the bridge — or rather, the true form beneath it, a princess of the dragon palace that lay under the lake’s dark water. The serpent had not been a threat at all, but a test, laid across the bridge to find one human being unshaken by fear. Her family, she explained, had suffered for years under the terror of a monstrous centipede that lived on Mount Mikami, the perfect conical peak known locally as the “Ōmi Fuji.” She begged Hidesato for his help.

He agreed without hesitation. Arriving at the base of the mountain, he found a creature almost too large to comprehend — a centipede whose body wound around Mount Mikami seven and a half times, its eyes burning like twin lanterns, fire spilling from its mouth with every breath. Hidesato loosed an arrow. It struck the beast and bounced away, useless. A second arrow met the same fate. For his third shot, he wet the arrowhead with his own saliva — human spit, in the old belief, carried a kind of purity that could pierce even a demon’s hide — and let it fly. This time the arrow found its mark, and the great centipede fell.

In gratitude, the dragon family welcomed Hidesato beneath the lake and showered him with treasures: a sack of rice that never emptied no matter how much was taken, a sword of extraordinary sharpness, a robe that renewed itself with every wearing, and a bronze temple bell, which — so the story goes — eventually made its way to the temple of Mii-dera on the lake’s western shore.

Courage as the Password Between Worlds

To a modern reader, the strangest part of this story may not be the giant insect, but the test that precedes it. Before Hidesato is ever asked to fight anything, he is asked to walk — calmly, without flinching — over something that looks like mortal danger. His reward for staying steady is not treasure. It is trust. Only after proving he will not panic in the face of the unknown is he invited into a world beneath the water that ordinary people cannot reach.

This is a different idea of heroism than the one many of us grow up with, where courage means charging toward the monster, sword raised. Here, courage is first a kind of composure — the ability to hold still in the presence of something vast and unreadable, neither fleeing nor attacking without cause. It is worth noticing, too, that the “monster” on the bridge turns out to be an ally, while the true danger waits elsewhere entirely. Old Japanese tales are full of this reversal: the frightening shape at the threshold is often a guardian in disguise, testing whether a human is fit to be trusted with what lies beyond.

Underneath all of it sits a worldview in which mountains and lakes are not simply scenery, but hold their own wills, their own histories, their own quarrels. The dragon of the lake and the centipede of the mountain are, in a sense, both natural powers — water and stone — locked in a conflict that has nothing to do with people, until a person is pulled in to settle it. Hidesato does not defeat nature; he is invited to mediate between two forms of it. That is a very different relationship to the wild than the one many industrialized societies inherited, where nature is something to be tamed rather than negotiated with.

Rice That Never Ran Dry, and a Lake That Fed a Nation

Lake Biwa was, and still is, the largest freshwater lake in Japan, and for the farming communities around its shores, its moods mattered enormously. Too little rain, and the rice paddies cracked. Too much, and the fields drowned. A story in which a water spirit rewards a human ally with an inexhaustible sack of rice is not simply a fairy-tale flourish — it is a wish, worn smooth by repetition, for the one thing that haunted every farming village in premodern Japan: the fear of the harvest running out before the next one arrived.

There is a quieter thread here too, easy to miss. Mount Mikami and the hills of that region were historically associated with metalworking and mining, and centipedes appear again and again in Japanese folklore linked to mountains rich in ore — creatures whose many gleaming legs and burning bite seem to echo, half-remembered, the danger and heat of early ironworking. Seen this way, the gift of an unbreakably sharp sword taken from the earth becomes almost literal: a memory of mountain communities that pulled both peril and metal from the same slopes, retold generations later as a battle with a monster.

A Bell Still Ringing Beneath Mii-dera’s Eaves

None of this lives only on the page. The Seta no Karahashi still crosses the Seta River in the city of Ōtsu, rebuilt many times but standing more or less where the serpent is said to have waited. Mount Mikami still rises, tidy and cone-shaped, near the town of Yasu in Shiga Prefecture, exactly as striking today as it must have looked a thousand years ago. At Mii-dera temple, a great bronze bell is shown to visitors as the very bell said to have come from the dragon palace — a bell later dragged off, in an entirely different legend, by the warrior-monk Benkei, who supposedly found it so unhappy away from the lake that its ringing sounded like sobbing until it was returned.

A neighboring town even carries the story in its name: Ryūō-chō, “Dragon King Town,” a quiet acknowledgment that the lake beneath Seta was never just water to the people who lived beside it.

None of this can be proven as history. No document confirms a centipede once wound seven and a half times around a mountain, and no ledger records a bag of rice that never emptied. But the fact that people kept a bridge, a mountain, and a bell tied to this story for over a thousand years suggests that something in it mattered to them — some hope about courage, about water, about a harvest that would not fail. Whether the dragon princess ever truly knocked on Hidesato’s door, shirankedo. That’s an Osaka expression, and it roughly means “well, I don’t really know” — a way of saying something with full confidence and then, in the very next breath, gently handing the responsibility for believing it back to whoever is listening.

This article was written with the assistance of AI and edited by the author.